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GEOL6358 Terrigenous Depositional System - Day6 10-09-2021-Part3
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00:00 um keep mm. Okay, we've most of the cultural margin acceptability.
00:13 we're gonna spend unversity afternoon looking at broken it up into two parts and
00:23 for note size and art. But remind me we're talking at some
00:27 Uh in the first part is gonna about basic Deltek processes and what would
00:33 considered mainly river dominated intelligence. Second would be waived and tie down the
00:40 . And there's a variety of good . Uh any more than on this
00:45 ? Just a few. Mm. when we look at the variables that
00:51 delta is pretty much like variables that any coastal system of But we're gonna
01:00 climate tectonics in terms of the sediment . And it turns out wade into
01:08 So we got Water seven supplied by really being functions plan. Tektronix affects
01:20 upon. It also affects uh waves the sense that tectonic searching for ways
01:27 times in the tech times can the control in terms of the shaped shelf
01:34 is a major factor. River about will talk more about and of course
01:39 geology will see the basic take congress . Um It's a complicated web as
01:49 illustrating, find this uh God man house we go from studio system receiving
02:04 . This helps schematically or rather die grammatically. What I show here.
02:11 I want I want to do is to focus on what's determining the shape
02:17 processes sincere. So like anything we to focus first role on how do
02:23 classify? So first classifications. Jim . Well elongate. Well they custody
02:32 translated and then it's out there. in terms reflect the relative get
02:40 uh increasing flu people well in versus processes. So these were presented bring
02:54 , hi destructive, this is low and mainly way land dominated, very
03:02 . And then somebody said, you about ties. So we're gonna add
03:08 . So at that point we could talk about it. Oh, try
03:15 . The way you talk about it's kind of what we're going to
03:27 to do. Some people wait a . Uh, moron, Delta,
03:35 , estuaries. Somebody else's kids are somebody. All right, let's stick
03:42 this. But that's modified even more on the relative of these middle
03:49 So now we can talk about Louisville waving for maybe if Louisville dominated Ravens
03:57 effective. Oh yeah. I mentioned size, look at spring size and
04:04 just, it just gets overwhelming. . Well, you always want to
04:13 auto, uh, you want the model if you can do a
04:18 So we're gonna go back to the diagram. But um, one of
04:25 reasons why it's of limited use or needs to be used carefully because when
04:33 look at modern dealt, they really the mixture of a lot of different
04:39 . And so if you look at . Uh and look at this different
04:47 as the delta has switched its course time. Um Well, gee,
04:55 there's a nice play on the way , here's a breakdown. Uh Oh
05:07 dominated. Uh it seems like it make up its mind as to what
05:15 wants to be, and so in , how would you classify in the
05:23 ? Is you are time saying is a custard is a prove yourself?
05:34 , so this is part of the or saying we really need to think
05:42 Delta is not a single type or than mixture of process. And that
05:49 in fact what this triangle diagram was to show. He was trying to
05:56 you to 10 point details the relative of wave, high river process.
06:05 so it it is the most recent . Uh and it has certain
06:16 Let me explain how they go about this concept, they take a photo
06:22 this, this is a help to , Australia, then another said uh
06:33 dominated, but it does have some channels and here's clearly there's something that
06:41 as well, and so when you a deal with that. Oh
06:46 no, uh you can that different and talking about sufficient issues. Uh
06:55 uh um you've got things like channel , uh things like your little Phil
07:05 grading beach regions and if you try assign a river way tied origin,
07:17 of these channel features, you get councils up here. So you said
07:22 it's a 62% tied on 40, will dominate 38%. We don't know
07:33 where to put it. Uh The is that good to uh The problem
07:44 kept service. They're not looking actually that are graded from top. So
07:51 may turn out very large, we're off. Oh, I don't
08:03 It's a very large its overlay overlay . It's like those Petri dishes.
08:14 it's an interesting way of trying to modern delta, but it does not
08:21 into account the history of the Okay, Are we can't take that
08:27 the rock record. So let's let's something different. The second measure
08:33 realizing a point in time. But subdivide each of the intervals based on
08:43 they We generate Hi generated seven floors floating construction. So for example a
08:54 by uh Yeah, by your asian clearing process, stress issue.
09:04 would be got a great so I a fungal uh stress green out there
09:14 performs high control. Uh Well coordinated raise the things that we talked about
09:23 far you could say, well this predominantly taught because this is waves.
09:30 so when you package them together, something here, it's way gone,
09:38 tired influence that can be using our to infer process for folks there for
09:47 construction then we can get a a uh huh How we could catalyze at
09:55 in vertical section one portion health. then of course we could take that
10:01 they crossed centuries. We'll begin to how these there. So again,
10:05 are just some of the need Wave dominated instructions tied down the destruction
10:10 flew. I added here, hypertechnical from those and but I'll talk about
10:18 uh fluid muds, those are typically to law. So here is an
10:29 from the goal of Wilcox here, uh looking at various uh cold relations
10:39 and signing the different kind of dominant . And so we can see how
10:51 elbow changing very free time and also no time. So one of the
11:02 saying in delta research is not so worried as much about is it a
11:09 on the delta. But rather what we say about the processes that in
11:19 have resulted in formation of this particular interesting action. Now let's go back
11:26 looking at a very authentic what's going now. Uh Louisville input whose water
11:33 seasonality density contrast between in florida. we talked about that. We talked
11:43 water baptist before, bottom slope, , tidal range. All these are
11:50 variables in determining the type of delta . Yeah. Now one of the
11:57 of looking at the particularly the density in water depths is look at buoyancy
12:06 , frictional forces simulation. And so forces are with this high density conference
12:18 when there's a lot of sediment and shell inertia interpreted fusion where there's high
12:28 small disc contrast deep basis find in other things with modifications so we can
12:38 them to look at situations that I get the gold. We have discharge
12:46 less than receiving things most marine. just gonna be friction points down.
12:54 the example? Friendship and Hi. . Yes, in the Where seven
13:03 judge is greater. It takes the dominated and almost can be a nursing
13:14 . Oops. So let's look at over time. Uh Both will give
13:23 a sheet of sand or set on up short. The problem with that
13:31 clue You can extend very far before particulars of course. So it's going
13:40 deposition, suspension and population if you sediment packages and a few kilometers.
13:51 . Um My perfect slope. That where you get these hyper take notes
13:57 talk about. They can extend for subplot, maybe more. All
14:03 So these are going to be not will they look different, but there'll
14:09 much more laterally extensive. Now Yeah, technical Marine said uh as
14:21 got a lot of galaxy and as as water here, we have the
14:28 water software way me here is in years. Oh, some people will
14:41 velocity closed this particular and the boundary fresh and salt water. Uh He
14:52 wisely with the bottom. It's actually critical fault and they find out of
14:59 basis of here. Mhm. But talk at this point, uh we
15:11 Maxwell loss deceleration. So they're Yeah, then let's go down to
15:21 critical fug. So this is our , then our that our press he
15:33 survived just now. If we were look at that from a cross
15:41 this plan here, depending on the institute is pretty well defined, not
15:48 mixed, but it also isn't well family, we're looking at something so
15:58 tends to say relatively confined and we get within this plug fresh water.
16:08 uh flow secondary currents with that. this clue is actually coming out fairly
16:17 . And as a result intends to us a relatively narrow band of
16:27 And right here we get some state very to evolve that now we're gonna
16:36 in second as the making Children uh we can reproduce this while looking at
16:44 blue data a day. Just think it as a narrowly defined uh huh
16:54 spreading of uh fresh walk. And what that means is that cross
17:01 we tend to get rather narrow with gulf. Far finger sands, we
17:09 get a widespread sand shoots. We these narrow zounds of sand and we've
17:17 to get that your say survey scenario very very much in God.
17:27 wow. Mhm. So thank you these. No. Now for so
17:35 we have here, this is a mouth city is going so lots of
17:42 , deep water or wrote all of things encourage violence. And so when
17:50 look at flu look at how the absolutely How to extend for 10s really
18:01 diffusion. Now contrast that with again on the perfect. Yeah. Uh
18:20 . What I will say uh with dominate, we still have fresh water
18:31 but shout and so there's an interaction the bottom of that fresh water.
18:41 don't have that deeper water salt. that first one because of that it's
18:51 back rapid deceleration after spread it. in that case we have the
19:02 Okay, yeah. Of a middle and the patient shit investigation.
19:14 numerous modifications. We still get cross concept but it's far exclusive. You
19:30 . And so what we would expect in a case like this is multiple
19:37 a whole series of Loeb's that are out. So this would be a
19:45 dominating, sandy, shallow. I said no suspended said shallow water
19:53 french giving us this rapid ladder of Spurgeon. Okay, so I got
19:59 kinds of uh uh now guards if look at you both and half of
20:06 . So uh buoyant friction Dominy. we got two examples that even with
20:14 river today, the honor Mississippi which , it is now it's under the
20:26 paul the win. And then the fly up just a little belt in
20:33 farming trying to form to do well do Mississippi indiana. Flying bay,
20:41 water, sandy, spread it. we can even well, a little
20:47 development restriction on the items here and to look it out all the time
20:57 . Changed the location of the I'm not gonna go beyond this.
21:05 it with you for a long But the shape of this so can
21:14 modified with tides until finally comes the uh the name same body. Now
21:26 suppose we have fever walls but and a result more spread. But let's
21:37 suppose that there's not much buoyancy now order for the buoyancy force investigation
21:46 we need to produce the density contrast the thank you and here. So
22:00 this particular case we got family. . They say that are still floating
22:11 . Just not. Let's it's and it's spreading more than they. Uh
22:23 . But it's spreading more and it's deeper want. So in this particular
22:36 . Okay, this thing Okay. my God. See, wow radiating
22:47 got deep water. Well, Happy. And so what we ended
22:53 having it's still a percentage are but not stupid. This is the gilbert
23:01 that was greatly thought to the typical a pickle. Therefore look custom and
23:11 . Nation talked about the customers don't that years often not the case what
23:22 delta really is is a situation where have grown to deep water with without
23:29 uh density break. Yeah. The second thing you get inside skills
23:36 for sex if we could get. in this case also we get a
23:45 of inertia which forces that are causing here gets the contract. Okay.
23:59 are best explained. Absolutely my looking friday for studies showing what's happening and
24:12 out a bit and notice search conclude still can find particular case giving us
24:22 of these ladies then it was carrying begin to save deposition or wreckage of
24:30 present. Well, this is a different type of setting. We have
24:40 spreading and these are all shapes of large see how horrible father called
24:48 Yeah, the location of our depending we down process is a function of
25:01 a chance. All right service typically times. So here's a remember fun
25:13 showed earlier there are some victories clinics center are here is a different type
25:20 bar. So we're beginning to look these river map process in light of
25:28 the modeling shows. Uh for the importance of friction boys and and inertial
25:40 all buildings. I'm sorry. All way to the river down the uh
25:47 Especially group will have these things. we're gonna focus on Mississippi Delta.
25:57 mainly because it's the best day and a good start people. Um it's
26:05 got one of the largest discharges the . So here's Derek delta.
26:12 and here are those. Mhm they asked uh huh were clues company
26:29 active Viagra. You said short. we'll look at head of passes and
26:41 at that specific area where we've got bring them out already. So we
26:47 from delta pistol board here being strategy terry not for murder. Also described
26:55 responsible. Their jobs summit is Lenny's little bit emergent march really have
27:06 unexploited display basically work okay. That jumping off screen. Oh, it's
27:19 or they have and what the show basically river dominated processes and then we
27:30 it fixture everyone processes. There's no , both flood kurtz here different things
27:48 we can get a sense of what definition environment is and the process you're
27:55 on this particular. So Let's look that. seven is it? Love
28:03 that love And some of that 70s out of suspension. Exactly. Except
28:16 it's going to get increased set to . They're finally getting up. But
28:24 know, we got to say for this is Roxanne. It's a between
28:32 here we got the major service separates . So we're looking at this.
28:49 . Now there will be Hi lines you like on four everybody is moving
28:58 the show. So this particular age got heart film from, from
29:04 Mm uh kind of like shore the terms pro delta, I mean
29:14 you want it. To me it there's a lot of different ways that
29:19 interpret this and I'll try to get preference. Certainly out the front is
29:24 sandy. Pro down is done. but where you draw the line?
29:29 actually another question. So for lyrics, the same data,
29:36 charlie, where he's got here. because it's like shortfalls. Uh what
29:46 you do with that innovated? So takes it as an example dominated
29:55 My doctor. Yeah. Which is we'll see. But the other thing
30:00 does is to remind you that this just a straight line. This kind
30:06 this exact back and forth because they act. Uh it's kinda like cartoon
30:15 the sand. Mhm mm They're in finger. So just as the end
30:22 the migrating. So the battery market for an offshore overrated transport more latterly
30:31 river. Each of these platforms has potential for down uh well down dip
30:42 lateral changes. And this is also to remind you that to be totally
30:49 if you don't correlate on the basis because of strategic final strategic and try
31:01 get these In the final four correlate this correlation does that sand is not
31:09 same. Yeah. So here we that programming saying we can measure enough
31:17 the sixes. No, just Uh well, since the bridge.
31:27 we had noticed said, well the now we have this tributary bar
31:35 Yet another definition. Again, all need to know transition but sam the
31:43 overseas and home workers from now. , as a result, the programming
31:54 and it centers for it is going be programmed with others in that it
32:02 no. Recently urbanized architect. The stations, they just might use
32:18 This is a blue set distributor are impressive. Which it's gonna be a
32:24 land. We get too harsh So of course we got statements if
32:33 of the mud spikes and bond I think about saying this is again
32:44 similar the sequence again here, this monetary is just possible. Yeah,
32:54 stripped enough off. Do you like lot of people changes to bacteria time
33:01 . But we get to say did you see that have on
33:11 So here at least we can look what this sequence looks like an outcome
33:16 this particular and so ready to vibrate amalgamated. Um, help finding
33:27 And here is the ship is basically . Uh but I have to be
33:37 the difference between really completely homogenized by March and the in this case the
33:49 . No, the first thing that you is lack of my prediction.
33:55 that's because you're getting the influence of fresh water that's coming out. And
34:00 it's inhibited the benthic forms. So thing well preserved that the second thing
34:09 there seemed to be tactic, this central packages and signing up serious standing
34:19 to but shit, these are distant this for deposits and this one uh
34:38 that's yeah people as you closer to source, we're beginning to see what
34:50 either storm deposits. I think talking you talked about really the difference uh
34:59 . So he's getting coarser. Why your face transition? We're getting more
35:09 if you're mark more saying so at point get into and without and where
35:19 see in this rico proxy for Yes, you get a want um
35:26 seven deformation when we get sometimes falling a structure where the sand just sinks
35:34 the muck. This mud is still fluid. One of the characteristics of
35:39 delta is particularly river delta is a of sentiments coming in once this water
35:46 . And so then follow that was just kind of six. But how
35:53 we get into this? Is delta across the Delta runner. It's
36:02 it's pretty much an aggravated sense. uh it actually looks like it's pretty
36:11 . Oh yeah, 42. Uh dog shit. A lot of these
36:21 . So I think I would stay when you see something like this and
36:28 you see faint examinations but it's like that like sometimes it's what we're typically
36:36 my observation. It's pretty nasty. we just don't see the primary
36:43 So now they should have a over on these primary sent infrastructures. Uh
36:53 I want you to two mentally compare visually compared this troll grading questioning of
37:04 statements of a delta river for this short things. There's a lot of
37:13 but there's an important differences. Now we drop cross section for one of
37:22 vegetate, you're just so that's not bird. What we see is this
37:31 belt bartender, sand rating offshore rating and offshore into we're just too
37:46 And this is what career this is singing and they say so this is
37:55 be a trumpet, the clean upper of that that month. Mhm.
38:03 if you look at the eyes of trials before the elongated narrow part because
38:13 resiliency of those that don't spread and . So this is a typical license
38:22 of a bird foot. Yeah, tight. Now this is nice pack
38:35 system that was briefly some confusion. is distributed Foreign Minister. Okay,
38:48 take this and these are long days called a bicycle. But the thing
39:00 a little different from what earlier is there are are a fit, then
39:11 know, it's not like that is of uniformly thick to thin but it's
39:20 and that turns out to be modern really needs since the Beatles areas that
39:29 very deep in areas that were very shell. So that's actually uh not
39:39 bad model for birds don't, but doesn't explain what you have these six
39:47 . So for that taken basically it's probably the old man.
39:58 much larger second. Just as a san and sink into a little what
40:08 is speaking delta faucet and begin to in to those don't claims. So
40:18 we have is we have to be trying to earth and then basically a
40:24 in public coach. It's good. , that doctored up with Can be
40:35 100 m in 20 years. And we see a process. You are
40:41 series of these that I've heard it's in between army six uh downward
40:54 are fiction. So vic and how do we know this? 100
41:01 20 years because as you went in put down 100 m of core and
41:07 came back every year and watch the up uh basically 100 m extruded Within
41:18 20 period. Now, what that is that this is really not very
41:25 substrate And that is show even more when we look at the seven instability
41:39 the same severe self reinforcing. So this portion of the delta, We
41:46 all sorts of five beers, mudflows . So it and we have a
41:55 example fringing. He's jealous. These those uh huh some different explains.
42:05 most of these are but look at re mobilization hunt them up probably 10
42:15 . What the then in a jar . Yes, in some of those
42:24 we also have this statistical publications so right things that we might look.
42:32 is what actually said. Uh So see here we live in now this
42:46 birds. There are real a lot this exception remobilize jellies that is of
42:59 and slumps. And if you were look at the met or something titles
43:08 yellow color as undisturbed And these long are irrational shoes. And this broad
43:19 area, our devastation works. So see them abuse per se. This
43:28 40%. I think it probably ready that. 8% of the C two
43:40 disturbed. Mhm By movement along with shallow salt has a degree maybe Cheney
43:51 . Uh so a very flash slow a tremendous amount of deformation. Um
43:59 , why do we hear basis? put it all richard and we really
44:07 noticed something after hurricane audience in 61 . Wow, maybe right fifties.
44:19 went back after everybody evacuate for 12 went back off charges long. Somebody
44:24 this place And they founded eight miles . It basically ripped down and floated
44:34 and yes, class within one of much loved. So certainly from a
44:41 hazard point of view. Uh This a major concern. I just to
44:46 a sense of what it looks There is a source. Okay,
44:53 we had shoots that come down unnecessary here here are some deficit bulbs.
45:06 are some of the shoots again, clubs, here's what they say.
45:13 the prettiest ache inside These months and world uh it could be up to
45:22 m six. Yes. Which and Mississippi or end up. No,
45:38 a good question. And what the fact. Perfect correct Because I think
45:50 , 40 ft well liquefied. So that sigh print loading because this legal
46:00 in cost. So liquefaction, which the loss of your sister uh is
46:10 on site. I get a lot work firstly it has side loading.
46:18 would be here here. So, it's or sentiment end up english.
46:29 would get this is all just report um can a pencil which where you
46:36 drop last? Well this is an of Verona. This is an area
46:44 . So seven positively once we were . So the question get this be
47:00 created said it then next flood sent there. So they know they.
47:10 the other thing we're finding yourself this mobilization doesn't have to necessarily internal
47:16 It can just become Sunni uh loading sediment that it fails in himself.
47:26 are all my patients that again, are all but remobilize. Well my
47:32 is going to be a what you by what would be the area where
47:37 have a predominant but we still live . So most of this organization's current
47:45 that more disproportion having said that there a, I recognized displays that are
47:55 mixed up as they go down right ? The active just shooting um
48:08 I'm going to focus right now on modern birds. Guilty. Yeah.
48:16 we talked about these lenny singles but didn't always look that way. In
48:26 , Another 100 years ago, it pretty skinny and during that actually
48:39 being almost okay, so what we're at is the feeling of these distribute
48:49 thing on purpose splits. So here one purpose play. You started here
49:01 and that's something large with time because prevents plate remains open for a significant
49:11 of growth. Now, what is little less clear is the fact that
49:17 crevasse play now as last land in water. Okay, This is the
49:25 one uh step length. So what's ? We've got two things going
49:31 We have continued deposition from the Mississippi the best plays. The sediment is
49:39 less because we are trapping water Plus in diverting water, that's
49:47 And also we're beginning to have So the accommodation seven issues changing.
49:56 . So well, here's what against well, we'll just take this beginning
50:07 quad flood. The front. More industry shows even more of we're losing
50:15 lot of the marshall. That has lot of side implications in terms of
50:21 protection. Uh Are they, Does land get stabilized by vegetation? Guess
50:32 does the new land gets stabilized by ? Does what happens is marsh grass
50:40 only grow exert and it's just uh millimeter to send me. But we're
50:49 some cases that the subsidence rates is greater than the rate at which the
50:56 given more, so it will stabilize . And that's one of the reasons
51:01 it's good to have it because it to resist both erosion and slow down
51:07 hurricane. But if it's killed off more easily route. Now the Mhm
51:18 problem with subsided is here is that too full. There is fluid withdrawal
51:26 both oil and mainly oil and gas elsewhere somewhat. There's also trenches that
51:35 being cut uh to get votes in album for drilling and that tends to
51:43 the marsh and that tends to cause to compact and subside. And there's
51:49 long term subsides. I mean, is a basin, who has been
51:53 since. And so we had several that are going on that we're destroying
52:02 egan. So what we're looking at a transitional form, so growth of
52:13 in today areas coming in the place essentially an abandonment of the marshall.
52:25 it's been suggested it seems reasonable that covenants sub delfino, you're such,
52:30 gonna be river dominated yo into the close close leg body water? It's
52:40 minimum. But then more than does allowed the elongation three distributors, the
52:54 elongated the distributor and also the more the first uh huh. The more
53:01 it is that you have inner distribute base to get and you will then
53:08 to form these canvas put so they not insignificant bodies of sand. And
53:19 we're looking at here is an active up talk for that stuff And this
53:28 one there. So we're gonna look kind of a VIP section. Strike
53:36 and what I want you to think it. And the first section is
53:42 oops Also um is going to be for vast play here. That's now
53:57 abandoned. And then this crevasse play . It's active. Now look at
54:06 map view. First of the The rest uh this abortion this day
54:15 it subside the elongate scenario and save lemons and chant. Now our preferential
54:28 oyster like above another and then it into so march that get more or
54:40 covered. They are part of Yeah bad here to have active deposition is
54:52 language as well as seven manifestation distributors between some marsh. So here we
55:05 that. Let's look at the uh this let's look at this section
55:14 this was the crevasse splay cutting through dealt and then this was Mhm The
55:27 grading for vast play. And they used terms like pro delta and uh
55:34 front. Now at this point is . So we have transgression and there's
55:42 the bay is flooding the chorus We got a little bit of a
55:48 beach here and history classes. Now we go down here here we have
56:00 active progress play. This was the her vast play. So notice the
56:10 of the abandoned Gravas play is basically deposits. Here we have the programming
56:19 and chance. So you see how things overlap each other. We saw
56:25 in Matthew and overlapping in cross So what we're going to look at
56:32 this coarsening up? Remember coarsening upward from day pro delta, delta
56:43 And then Yeah. Um, So here would be is the property
56:57 less. Here is the champ, his channel coming. Of course,
57:11 trying to have a gorgeously hot Yes. And then a this this
57:22 be like But here's the chance. into here. We have the best
57:33 . Love your base for real. we have the display forces, the
57:44 come in. So you have all course me up with package from bloody
57:50 and prevents blood. And you also that erosion base for the purpose
58:01 Um, well, this is just great when we looked at ladies in
58:18 funeral procession and we saw that as gaga culture, culture. The leading
58:26 got better closer. Same thing happens this particular example as well for state
58:36 except to say that when we have in the long term we have a
58:43 of first big number of packages sometimes up but Finding Up Corpus The Coarsening
58:54 Age 11. So we have seriously they could delta, they passed away
59:07 that looks like the cross section maybe like that. Oh, never had
59:14 last channel. Yeah. Was crucial . Super parks here. We have
59:28 when you heard the best now are tom. Well, in terms take
59:36 look and see low off my Uh it's horses fine fine. So
59:50 can see you can draw a series lines representing different packages. Center so
60:02 is that chinese. I'm sorry. huh. All races your favor.
60:14 energy in any antiques. Course we the tactic is that give you a
60:26 office. You could try somebody. this is a flooding opening stand.
60:33 these these are to be paid So you got a local services,
60:41 complications. Somebody you're basically doing it finding and sequences which are the best
60:50 and preventable. Uh Yeah. Uh this is what they pretty so uh
61:02 , for best clothes. Mhm mhm . Now with the channel it's more
61:15 let's look at that already 90%. that's a manual, what's happening as
61:21 active distributor was here. It begins search. This is this is the
61:32 good thing they mark. But now getting more and more than water.
61:40 it is enlarge. No, they natural levee is thickening moving offshore and
61:51 getting more susceptible into that thing. it's filling in this case. It
61:57 also film with sports. I just to see like now it's really big
62:05 look how that absolutely has extended family here. This was just a chance
62:17 again, yeah that wash and we're a change in type of form racket
62:25 to first of all the forms so but now that basically the both of
62:36 that buddy distributor and champ cool what once adam uh but more here first
62:51 here this is what you get. we can get this pattern either from
62:58 lateral migration of the river or the was reached a larger. Yeah.
63:08 Delta particularly these types of Delta's distribute don't meander land. So when you
63:16 this, the delta is more the of enlarged group of the levees rather
63:24 lateral separation. Uh huh. Well in here is just basically go back
63:33 arches uh started and there's they no to leave. Okay, so that's
63:47 nuts what happens is it's pros and struggling and giving we got a lot
63:57 other costs happens. This this Okay, this apparently is thinking it
64:09 me to translate and he's doing a job. Let me yeah, let's
64:23 it may be stopped late. Yeah, thank you. We don't
64:34 to worry about a thing here are imagines students if you make that
64:44 Not not a lot And depending on you count on their 7th 15 or
64:52 that have occurred during more or less my sisters and what I want to
65:01 uh look at what is expected. what I wanted the first is to
65:09 where the city Yeah. Or the . This is kind of like a
65:20 fact, extraordinary food system. So think about the elements and stuff all
65:29 just don't play these two here. what is it before? Less causes
65:37 regulators are both. And it's related this length of emotion is related to
65:45 backward existence. And this is just example. Yellow remember from Yeah,
65:56 and the backwater distance basically place where beyond the but it's where the river
66:06 bought begin to go some below the this seems to be the place where
66:18 most likely to switch. For brussels river. The father switched upstream
66:32 I can all the way down. is that late boss. And so
66:41 an art related to Seoul so we look at slope playing it seems for
66:50 like amazon city Nile *** reset. respected slogan. Now shorthand for determining
67:04 is the depth of the canals of river provided by the song and that's
67:12 Sharia and others to try to figure what the backwater distance would be for
67:17 ancient health. It's hard to tell slope that's the birth. Uh,
67:25 other thing is see, so that's actually there is a lot any
67:37 So that's another big source of the is it's the only way we have
67:45 far. Probably what's the back one the depth of these point convulsion.
67:53 , at what point is this tributary going to emerge? Uh, the
67:58 we have support. Oh, once do have at that point, it
68:06 pretty much correlated with the wash, is what happened. And these are
68:12 ? Yeah, yeah. Okay. let's look at you want to me
68:19 is this is only the next to up Satch five day. This is
68:27 worth. It's coming in following a of Yeah, uh huh. You
68:40 . Okay, this is actually wider blacks with And if you look at
68:51 evolution of the exercise, describe this of the street in love speculated it
69:02 to laterally called us larger bodies and to see splitting The District Jersey
69:11 We have these major load and interestingly . They are growing both end of
69:19 day and upstream. I had to after immigration as long as downstream.
69:26 these are those channels are bars and as they call this? They're growing
69:36 industry. So this might be the bar and then we're growing up,
69:46 Malcolm mating. It's also going upstream downstream. Ready? Yeah, inland
69:58 and then a lot of these regional channels. This is his amount.
70:09 that actually something descriptive view how this through but it really wasn't until.
70:19 . Mhm. Scientists example research started at blacks let down I think what
70:29 think people out there does the exercise going to do and uh what they
70:36 was that this delta is here consisted a series of ST uh more specifically
70:45 this is helpful then there were Yeah with the result of the
70:55 Yeah. Mhm. So this is we first saw the in flight little
71:03 against aggregate the form injected deposit compact then you can originated perform governments.
71:15 the building block of the deltas with is a this is a subject.
71:24 . So here's one of this is single just the cost and you can
71:33 how this is just one of multiples to understand how long let's go back
71:41 that idea about jet through terminals. . You have a I.
71:51 Spreading slowing down all the food And you look at the sediment that is
71:59 . You actually want to show devotion period They have to consider 11
72:07 So they do we have this pacific bedroom the past itself. Great sure
72:18 sustainable devastation. So this season is Christianity bar and talked about form Now
72:33 this particular case it's there is one because it's apparently shower great spread right
72:43 is well defined. We of voice this is This one here. So
72:59 profile articles and is celebrated. Mhm is what they reproduced in that.
73:12 this is Matthew of seven. They we're gonna look at one in this
73:25 . 34. Fuck. Okay. what Yeah. Yes. Uh here
73:38 have implosion as we went further we're looking at down street appreciate the
73:49 . They're getting support for play rich rich as a broker at some point
74:02 began to have look ST aggravation. we've got our train bro being here
74:13 . This is that portion of the . Are you? We're free.
74:24 is a very different here. So at albies probably of all first stuff
74:36 they're getting one more mountain from mud and then channel no. Yeah.
74:49 . And I think what I was here is that what we're looking at
74:55 yes. Okay. Yes. Something like that. Okay, so this
75:08 love here is this yeah, It on this one. This is a
75:15 so you can see how they're group this group Yet one of Serious
75:27 So the pattern is really the same the action line in terms of the
75:34 aggregation but we're beginning to get a better feeling or what those packages look
75:44 in terms of these jet floats except can look at all sections or we
75:54 look at oh okay actual sections. that sanctions looking pattern. Uh,
76:07 bill always region act. Ultimately you them together to build this zone.
76:22 , what I assume you already recognizes this was and is friction on
76:30 shallow water The extra plants they and lot of friction causing a lot of
76:37 nature. Mhm. Uh This is much the secret. Thanks to
76:44 This is a field study combined in experience and it goes back to
76:59 Yeah. Supercritical from here, erosion . So if we think of this
77:14 as the course enough serious take a section through in one channel another chance
77:29 . And as that film, it's to get your funny and see if
77:35 take a down court channel. It's to hear the back side. Here's
77:43 downside. This is the jet Yes. Is this, which is
77:58 first book now you've got the the rivers are all equally by.
78:14 rarely when you get both distributors, . one is going to fail
78:20 So what happens is you begin to this one for breaking ladder. They're
78:34 , you got abandoned ship here. a small chip. This is a
78:41 that will make. So you can how the these logs were run superimposes
78:56 now let's look at here. This an older little the actual fly.
79:01 mean the porch. Yeah, this what the edge of flying will be
79:08 it grows on it's the large shallow dust. They don't sit and what
79:18 notice immediately. So much clarification. . What that means is that was
79:29 positive any places along the way and the sand ice pack is going to
79:37 more sheep. So the sand eyes simple this and had plans you very
79:57 . I'll put on she sends breaking and there's a hotel. So this
80:09 what we referred to earlier on as global health early offices, Digit eight
80:15 little bit. And that was based waterbird book and a push.
80:24 compare that. But the great bill I suspect being modified when the species
80:38 different. And if we look at in process. Here's some out the
80:50 sheets. Hand here is his much narrow. Perfect now. Mhm.
81:07 is the vertical secrets that you It's your shoulder. I want to
81:15 history look at and leaving. But of the things you notice.
81:24 Also a 65 5. Sure here the No they again vertical section.
81:40 want you to spend some time relaxing looking between this terrible president. one
81:51 is us. But the other thing this sells up. It's 20%.
82:01 is eight weeks. So this delta a shallow water. This is a
82:14 water. Lots of why they accumulate play here on soft saturday definitions.
82:29 is a friction God relatively shallow. do get clipped. Uh huh But
82:38 don't get that. Say all somewhat easily mobilized. Mhm. So
82:50 want you to think about the lateral . It's just Uh huh. This
82:58 walking along girl. This is jupiter . Oh This is why 10 or
83:12 . Everything is connected. Oh So difficult. These are much more
83:19 . Mhm. So clearly a study question is compared to dress. Well
83:27 river dominated deltas. Well, vegetate party building and why they give an
83:42 . So this is really what we're for. This transition uh bigger dominated
83:52 work all day. We say this more wage operated. The reality is
83:59 lot of that is related to other . Well, in each case that
84:08 talked about the growth of the Talking about the abandonment. We talked
84:19 growth here, but now it's a channels. Yeah, we're beginning to
84:34 continued subsided. I gotta take a or what was the swamp? It
84:41 basically retreating back and eventually sanely marsh . So what are you going on
84:56 ? That you have to So we look at The sequence but in that
85:05 , imagine that here was active for . Now what we're gonna do is
85:13 going to start to we were then you've seen new active. Oh and
85:24 area is subside number said so delta beginning to Iran and so we've got
85:37 transgressive area. I will change it the reworked health and behind is what
85:50 dealt complains become subsided, become subsided then mhm Over here in Britain.
86:03 . Yeah, it's going from song ? And oh and we see that
86:19 here. Right. Another young You cross it. Hear that belt
86:28 growing. You're all right here then to look substantial. Is it subsided
86:42 ? It was fun. And sometimes it was transgressed. Funny green bay
86:54 the city part. Now we haven't . Yeah. Six. Well,
87:07 this is how I look at it here. It's a and a chance
87:13 that let the appropriations here's that transition , voted just sally now it's finally
87:35 this is a marine for residents. wave, convenient service there may be
87:44 little tighter in the bleeding. But we have that very around earlier.
87:53 we have time process and that is self to the world. Okay,
88:07 at this. But actually before I let me just say it when we
88:12 at these photos, There's like a of people are you 16 In the
88:21 18 years and it is something Now I'm gonna do. Those focus here
88:32 with the Chandelier one and that's basically mark for this stuff. Money for
88:44 stage. Okay. You seen like mega crevasse splay flooding tributaries of definite
88:55 often actually chamber you see. So what would have been suggesting therapy
89:10 say an evolutionary stage of a It's something like that. So the
89:22 thing that's going to happen this is bad this was the question,
89:30 We're going to go ahead. We're to have bits and he wrote in
89:38 here. It's going to save me page. So the science goes on
89:50 we disconnected headlights from green park. genitals are very well that as we
90:00 to society very all taste urged. then, yeah. So we can
90:11 look at that by looking at the already said. Yeah, here we
90:22 something very rough. This is a hmm. Schedule we're looking at this
90:31 basically barrier out of sketch. It's now we got but I mean very
90:44 the sink below water number and what gonna do you we were is shown
91:02 at some point in action is this from that very line. It was
91:13 now I'm a shelf set. It's as isolated by himself. It had
91:24 its origins barrier when it became So there we have this inner
91:35 Well, I'll give me and that's example, wolf, This is a
91:45 which is offshore area on the negative no, here's a Yes. Uh
91:55 . That was a younger delta goal still has barrier islands. Well,
92:04 how we stage shoot. It's disconnected the so we see a whole series
92:12 these implicated we are the world. you see the whole pattern of abandoned
92:23 features depending on what stage wrecked flanking very hard inward Schultz. So if
92:34 look at the programming series, here's happened. Is it Samantha?
92:49 this taking those in good the here that ST shelf stand going up into
93:01 he seems to be Uh huh So this ticket the thickness this don't is
93:14 same as the fitness of the That's not they had said that this
93:22 fairly because of this himself. So get significant destruction of all faiths with
93:32 buildings. What? So here we remember dominated mhm abandoned signs. Now
93:53 look at this from senator deal because thing and what we can do is
93:58 can look at it at various stages and what we see is that in
94:13 areas between the distributor cherries we had horsefly up receiving stuff. Yeah,
94:21 same. That's 0.1 in the channel have the finding of the stables of
94:32 to abandon channel so clearly your best and channels face in between. It's
94:46 to be sitting in the Garden of Gods are actually not the best the
94:55 President Active channel. It's driven to challenge and this is what some don't
95:15 Mhm possible to discover our deposit super . It's a lot like cared about
95:24 was happening still of course the upward we're getting more and more splits.
95:30 of course the first it is cider getting distance. So we're looking at
95:40 three main periods congregation but its grading now they make it sand innovative send
95:54 pretty much but I keep seeing spots contrast. If you look at the
96:03 channels all sharp, please bye. they're very, depending on how they
96:18 abandoned, this is very much like and insist the Osco fill that and
96:25 much said comes in at This one active all the time. And then
96:33 this one had for intervals. this was abandoned after a short time
96:41 just shuttled in each case the your resident present me a basic challenge.
96:55 yep. Mhm. What Galloway did to suggest that you could look try
97:02 correlate these various deposits. And one things we have here is that coarsening
97:11 system, which, and then it's bad actually, it's not so much
97:19 as it's pro grade, I'm Is secreted mm into the mud faces
97:29 the top part of the Delta. , here's that same package here here
97:40 . Now that package is cut off by chance and up here we've got
97:49 chance. Trust it all okay for the top of this creating pro
98:01 Delta is in kept by what he an aggregation all phase, basically
98:09 I'd rather organic rich deposits and then happens. There's a sharp break.
98:17 wrong in here and we actually have sand show here and we've got some
98:26 here and here We get into some . So you can see how this
98:38 , how potentially difficult it is to from logged along. If you're not
98:45 about the various substations which are looking when we think of these loans,
99:00 can think of them as verse And we can think of how the
99:09 depth as we go from shallow shelf the lap to keep the shelf on
99:15 life there. Oh, we could at our sub science. Yes.
99:25 that change and shelf depth. And can look at how sea level dropping
99:33 full integration. There's a variety of that will determined fitness and pattern of
99:43 . Pro gradation. But one of things that is that even during a
99:56 you have here is when it's more . And the accommodations based handle the
100:05 of the transgression regression president because Right . So this is a transgressive increasing
100:21 space to sentence. It's a back during the high state. We still
100:33 periods of transgression refreshed. But they're great. The other thing to keep
100:43 mind is that the reason why you these packages appropriating? And then this
100:51 because the Delta was folks. Oh . Creation banning all the regime real
101:03 . Okay, so Delta switching You mose or was causing these transfers
101:14 . How would you distinguish fact like changes. Well, what dreams,
101:22 changes. You'll see the same patterns transgressions and regressions worldwide. Mhm.
101:31 will be dealt a specific. So of these may well have been
101:38 Hispanic people changes accommodation but most of will be auto debt. That is
101:49 general by delta searching as opposed to exterior forces like Mr. So here
102:04 have one of those retrogressive paragraphs. sequences where we have back set.
102:13 is associated with rise is sick. if we look at some of the
102:26 dealt with the Mississippi this pier four problems. Oh yes, we're looking
102:41 next one. C level slows down rate acres. You can then begin
102:55 have provocation sequences and we have that bit specific today. But it's much
103:08 bombing and longer term pro gradation of of coastal center or rather popular
103:18 This is true now on size we to look at a taking issues where
103:34 shelf margins programming up. We think that. Oh is everything it goes
103:42 . It is. What we all is what represents the relative extend.
103:52 layers here are really consistent delta It starts off very shallow. This
104:04 a forced regression until it's a Then it's a shelf edge. Delta
104:13 be in the hair show more so shelves Hamish force progressive until we get
104:25 the breath. Do we get shelf built in shelves there's there's so fun
104:32 scale with the water depth that do those shelf uniform scale with the
104:37 depth of shelf. Well yes, that the break, certainly the taking
104:48 top set or set of delta is to be the sea level of
104:54 Okay. During that year. But thing you know basically have a delta
105:04 shelf you nothing else still show. turns out something. Uh huh.
105:16 , flores, Curtis. She gets little operation. I mean at
105:27 Yeah baby that said, it's crazy you said. It was not absolute
105:34 . Is that the individual pathology is will vary depending on and the complex
105:46 on which they get it. So sends his regards way dominated here.
105:55 a doctor in different sense. So no longer just a matter of appealing
106:02 delicate programming across the shelf. But delta changing from shallow to deep water
106:10 shelter shelter. And that's the reality that you have here when you have
106:17 appropriation. Uh really now the idea too deep can vary on a variety
106:32 skills. And one of the things I found it, let's look at
106:38 locations forms and they were delta. it turned out they were all turning
106:47 angle down because client before that Hilbert this. And so here's a low
107:00 built. Well I do. So um and then on top of
107:19 transfers this is from Yeah. The first deltas and performer celebrating too
107:36 we're going shallow water basically. This is not for us. But they
107:49 their gentle. This looks very First. It's very simple what you
107:57 what they uh saw with that. . But then something happens okay.
108:09 before sets begin to who will speak star. So what we're looking at
108:20 this early phase shallow water dealt well and then there's the water reaches some
108:31 debt. The overstatements becomes Gilbert. yeah. Gilbert type steve force.
108:46 is basically just a little deeper. these are just some examples of how
108:55 shaped up. We found this over question. This is a failure at
109:06 . I've seen southern and these are sitting over here. So this is
109:12 a lake, it's a half Green associate opening up so that's.
109:20 into all theories probably transgressing corroborating transfer . Take one of these. It's
109:34 water non gil rejected the village. this this is basically one of these
109:59 fed the area was a collar half major fault in the interpretation is that
110:08 that they're saying is a variation Well electronically controlled, accomplished from slow
110:18 to grab it subsided. So what ? Yes, he did. The
110:26 is not one thing. Yeah. feeling steep when we get four or
110:39 critical depth where the slope begins the as a few countries and then the
110:49 thing is spanish or is try to because of this because of change the
110:58 center. So these pulse and this of this programming way for Ron Gilbert
111:10 type belt is a result of pulses tectonic activity. Yeah, he says
111:18 fault. Here's control secrets at sea , not even Shannon Walsh or rather
111:29 episodic techniques. So this is a where tectonics is controlling accumulation space and
111:39 in turn is controlling the adder provocation the style don't think jubilation. Uh
111:49 . So why don't we break Um You're supposed to know and then
111:56 pick up later and we will. . Yeah, almost. So,
112:05 , we'll break here. I want come back in about 15 minutes.
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