| 00:00 | Yes, so you fire ships but uh, there will be some |
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| 00:07 | that you'll have case studies screen. just came over uh huh for the |
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| 00:12 | of time, you can't remember So let's look at this transition, |
|
| 00:18 | pretty much had look at third the low bay. We also looked |
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| 00:23 | shallow to deep and they looked at Felton what we need to focus on |
|
| 00:28 | is not so much what we see , but uh, what we see |
|
| 00:35 | is waived on delta. Okay. so this is a comparison the Atlanta |
|
| 00:42 | among the students did to look at , anyway, dominated short plays and |
|
| 00:50 | dominates dealt. But what we want do now is you're one step |
|
| 00:55 | the top way down the delta. , and that could be something like |
|
| 01:02 | Nile delta or to be something like brazil or, and yeah, |
|
| 01:13 | and particularly in brazil and Mexico, are basically looked like programming strand planes |
|
| 01:19 | the river through, whereas when we to denial, there's a lot more |
|
| 01:26 | , distribute terry look to it. , uh, this is a wide |
|
| 01:33 | of types of delta, here's the delta. And when we talk about |
|
| 01:38 | Rhone delta, uh, in this example, um we're going to look |
|
| 01:50 | that Hi sepak, it looks something this. So it's uh even more |
|
| 02:00 | parallels the strike, vernon Loeb Okay, in fact, one of |
|
| 02:06 | suggestions was that if you look at dominated deltas and the implications of South |
|
| 02:13 | that they buried in shape, depending part on the relative inputs of river |
|
| 02:21 | weight. And that makes sense. these are just some of the |
|
| 02:25 | uh different shapes that you get for wave dominated tilts. Now, one |
|
| 02:32 | the things that's interesting though is that you look at this delta here, |
|
| 02:39 | the longshore drift is going from right left up, extreme up drift better |
|
| 02:48 | you get pretty much only programming beach when you go downstream, you tend |
|
| 02:54 | get some of these elongated uh spits bars with some uh huh finer grained |
|
| 03:05 | as well. There's a cemetery, you like, between the updraft and |
|
| 03:10 | side. And this was recognized maybe effectively in brazil, where they |
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| 03:22 | I think pretty successfully that um when look at these deltas, the up |
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| 03:30 | portion really is a programming strand playing is being interrupted by this river, |
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| 03:38 | that it's the downstream down drip It's really the only part of this |
|
| 03:49 | that is derived from the uh and actually has some important implications, both |
|
| 03:56 | terms of the asymmetry of these way johnson's, but also the source of |
|
| 04:02 | because the setting on the up drift is longshore drift could be a completely |
|
| 04:07 | conversation and the sad among the down . Sure. Uh we see that |
|
| 04:14 | the daniel, we look at the here and again, this is, |
|
| 04:24 | , pretty important paper. Uh look just over here versus over here. |
|
| 04:33 | , um strand plane, more bar low high look. So let's let's |
|
| 04:42 | what they've got here. Uh this is the Danube long here, |
|
| 04:47 | got the strand plane sands. And we have these inter bedded beach ridges |
|
| 04:57 | lower somewhat as symmetrical or their lower finer grains swells. We get this |
|
| 05:06 | over with these wave dominated adults, a cemetery. Uh So what we |
|
| 05:13 | is the idea that there's a There's a series of bars and those |
|
| 05:23 | elongate and end up welding to give this down drift alternation, correspondent |
|
| 05:37 | you get it here and get it , you get it, hear, |
|
| 05:45 | etcetera. Mhm. So, one the questions is, what is the |
|
| 05:55 | pattern looks like the way dominated Does it look like a strand plane |
|
| 06:05 | does it look something different? And still trying to figure that out. |
|
| 06:14 | what we do know is that on surface these beach ridges are separated by |
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| 06:22 | grained, more like lagoon set. question is actually what happens the |
|
| 06:33 | Some studies suggest that those muddy intervals extend completely separate the sand. Others |
|
| 06:46 | this suggests that it goes all the that's important in describing the connectivity of |
|
| 06:54 | sand, particularly on that down drift of these deltas. Mhm. Uh |
|
| 07:02 | is a study that I'm gonna skip say it shows the same thing, |
|
| 07:08 | with a modern dealt of the L . Where here we've got uh sediment |
|
| 07:15 | to come in a large amount of . It came in here that was |
|
| 07:22 | reworked into these bars that are being onto the shore and eventually closed up |
|
| 07:31 | . Okay, so we see this and it's a well established pattern. |
|
| 07:39 | really the only ambiguity is the nature the down drift buds. True. |
|
| 07:46 | I'll leave that for you to think , but I'm not going to be |
|
| 07:52 | it much more. The one thing is that we really do have some |
|
| 07:57 | deltas versus estimates and at the extreme could be considered deflected. So this |
|
| 08:04 | be an example of a symmetrical symmetrical delta and this would be a |
|
| 08:13 | deflected um Yeah, yeah. With cameras plum is deflected and how little |
|
| 08:23 | is in terms of appropriations. now this way dominated delta here is |
|
| 08:29 | interesting because in part you can clearly how there have been different delta lopes |
|
| 08:38 | time and you can see them marked as well. There's been a lot |
|
| 08:45 | description about this. This is a symmetrical wave dominated delta, but it |
|
| 08:54 | clearly shifted its course periodically. So have an abandoned course and we have |
|
| 09:06 | um a new course and I'm going actually erase this for a second because |
|
| 09:14 | want you to think for a moment the construction aled destruction all phase of |
|
| 09:23 | Mississippi. That river dominated dealt what after abandoned. Well, there's |
|
| 09:32 | there's a lot of stuff. We very islands, we've got bays and |
|
| 09:38 | . What happened when this delta on sunday races with this Delta was when |
|
| 09:50 | was a bad, just have a . Sure. Face erosion, nothing |
|
| 09:56 | . Yeah, so there's a huge between the destruction of phase. These |
|
| 10:02 | dominated deltas And these river dominate And and the main thing is, |
|
| 10:08 | , two things. This is highway energy and it tends to be uh |
|
| 10:19 | amounts of mud, pro deltas, pro deltas worth in that mud is |
|
| 10:24 | offshore. And so what we get this basically Russian transcription. Uh So |
|
| 10:33 | get a very different stacking pattern when think about the superposition of these |
|
| 10:41 | they superimposed laterally, but not so verdict, they tend to form basically |
|
| 10:51 | continuous. They're not connected necessarily. delta loans. I'm gonna skip |
|
| 11:01 | It's a really interesting article, including nice examples of vertical sequences, both |
|
| 11:13 | uh in various parts of this but I don't have time to do |
|
| 11:17 | . So we're just going to look what would normally be the idea of |
|
| 11:25 | wave dominant adult. Okay, it's more mud's coming in or more river |
|
| 11:34 | , even if its way dumb, will have more pulses of traditional |
|
| 11:40 | so it's going to be a little separated. You pretty much amalgamated. |
|
| 11:48 | look at the, going back to question I asked about erosion. |
|
| 11:59 | that's still here now to yeah, is one package package. One package |
|
| 12:12 | package through. These are stacked one top of another. Uh, and |
|
| 12:20 | this is what we would see with beach ridges for grading out and there |
|
| 12:29 | pauses. But we really get what we're saying here is the |
|
| 12:40 | the aggregation all think she's of the . Um, it grossly is fighting |
|
| 12:52 | , but it really consists of a of finding up packages, each of |
|
| 12:56 | represents a phase. Oh yeah. to explain this in more detail, |
|
| 13:05 | got to go back to that other I'm not going to do it. |
|
| 13:08 | , so let's just go this Here is a river dominated delta storm |
|
| 13:15 | damage kind of next to here's that service in fact, here is that |
|
| 13:23 | cutting farther and farther down from, on how much down cut and how |
|
| 13:31 | it's been. Uh, transgress the of by occupation. Well shoot, |
|
| 13:38 | we don't get is transgressive patients that get in the river dominated. You |
|
| 13:45 | get the downward truncation. Okay, here's a series of wave dominated deltas |
|
| 13:53 | are more vertically accreting because of tectonic . Okay, so yeah, here's |
|
| 14:12 | deltas that are shifting and so we've a whole series of different delta loans |
|
| 14:19 | different styles, but here's the, your flyer right here. You see |
|
| 14:24 | set includes the general transport of set the Mississippi is down drip to the |
|
| 14:35 | and so adjacent to the delta plane a shin airplane. So when we |
|
| 14:41 | of these large delta and we think what's going on ladder beginning to Shamir |
|
| 14:52 | , which is a mix between a flat and a strand plant in a |
|
| 14:59 | is the alternation because what we get the sandy beach ridges separated on mighty |
|
| 15:14 | . Yeah, we can date those see when periods of Sanders, Sanders |
|
| 15:29 | all right. Sandra score on your of translating and then there's my class |
|
| 15:36 | comparisons. So we're getting these health set but it's also for money |
|
| 15:46 | Same. That is so when that through as of all sit in the |
|
| 15:54 | part that larger. Don't complain. when there's a lot of mud is |
|
| 16:00 | down into the shin airplane. So mudflats program like this. Oh, |
|
| 16:09 | the delta shift to the east, not translation. Oh, so we |
|
| 16:20 | in this beach when they involved again the west. Thank you. So |
|
| 16:30 | looking at programming but interrupted by trans spread so we can correlate these packages |
|
| 16:42 | pro grading mud plants and transgressive sandy with the of ocean. Large scale |
|
| 16:50 | all of the Mississippi river between so population much percent west just to the |
|
| 17:01 | . Corporation buds east. Now in case of the way dominated deltas. |
|
| 17:14 | , I don't have slide show just see it. The longshore drift just |
|
| 17:20 | the same, so we go from delta was trained. So more mud |
|
| 17:26 | delta. He's going to grey down to a when you're playing more sandwich |
|
| 17:37 | , we donate delta pro grade down the sand and strange. Oh, |
|
| 17:46 | last thing is tight dominating deltas. really are. You know, in |
|
| 17:51 | like this. Okay. Uh they look at some of the modern I |
|
| 18:02 | the first thing that all in the shit go straight to the every fun |
|
| 18:13 | . So the first time you might at is the river said this is |
|
| 18:25 | program. Yeah. And so, , look at these two Delta is |
|
| 18:35 | Yangtze and flawed. They're the ones have the classic V shaped with the |
|
| 18:41 | sandwiches. You know what we find that bolton all flying in Yangtze? |
|
| 18:52 | said what if that is constant? you get all right, one year |
|
| 19:02 | beginning to have seaward widely and c decrease. Did we get today? |
|
| 19:17 | me? No. Okay. Yeah. This one time I see |
|
| 19:29 | are city. The strength channel kept . So wait, it's a big |
|
| 19:46 | you can spread. You can This is typical of hi don |
|
| 19:55 | Yeah. So it was, So how does the question about |
|
| 20:04 | Mhm. The black arts distance from wig, which can, which can |
|
| 20:14 | , Yeah. Yeah. Another thing , it's very in here. That's |
|
| 20:24 | to shave uh, is the area break the maximum. So, so |
|
| 20:36 | is the make up. It has little better than this. It's not |
|
| 20:43 | yet. It's clearly over. It has a lot of district areas |
|
| 20:53 | These are so some areas are acting again. We see the same thing |
|
| 21:03 | all these tributaries constant wet I I see you are city most lost |
|
| 21:13 | evenings, same shower. This is within a single delta, looking at |
|
| 21:20 | tributaries for with the multiple. So we Edwards changes. Why are you |
|
| 21:33 | ? Fresh water coming out about your saving title influence interview globalized after. |
|
| 21:50 | he began to what's happening to the in the world? All local and |
|
| 22:01 | . Right tablets extent significant. Hi . So we're gonna see flood, |
|
| 22:11 | flood conditions that are running uh, is a summary of the various things |
|
| 22:22 | go on in this distance. Review for you, which you might want |
|
| 22:27 | look at uh, to see what the changes you're going on. So |
|
| 22:35 | general river energy is decreasing increasing. this so from channel evening channel |
|
| 22:50 | it's really your so flu ville. studio being summary uh huh deposition. |
|
| 23:02 | reason I say that because that's what described to you and that the river |
|
| 23:09 | decrease honest, the same shit straight strength we should please, I think |
|
| 23:20 | greatest here. It was more The question tidal currents can increase |
|
| 23:31 | The title accident because of the fun you need to decrease this upstream. |
|
| 23:43 | with this was with an estuary. does it differ with a Yeah, |
|
| 23:53 | thing is no Alex but they rubio dominance is allowing for procreation of the |
|
| 24:07 | example corporation. So we've shifted the f Thompson river song and as we |
|
| 24:21 | to fill this sexual nominated. So will be flying. Yes. |
|
| 24:33 | So the main thing is to look how much farther. So here's the |
|
| 24:41 | . Mm And how is our example are growing becoming virgin programming. Father |
|
| 24:53 | into what travels this tributary eating long . S. A Brooklyn. So |
|
| 25:04 | of the key differences is the nature the title bars have something that shows |
|
| 25:09 | So this again is a typical uh ambition become the funnel shaped. Well |
|
| 25:21 | terms of areas you have these elongated some alias of ours. Mm same |
|
| 25:33 | here. And what it takes to them is that this river or an |
|
| 25:42 | . Well it has had different distributors these little the angry distributors over here |
|
| 25:54 | you want. So this is the protest. So we actually have |
|
| 26:00 | Hey, centralization here. This is issues. This is more than |
|
| 26:09 | So this is closer to a destruction cabinets. Oh this is more |
|
| 26:18 | So it it migrates the different enforce it. Hear what the instructional |
|
| 26:27 | is basically driven by times we can at the destruction of faces, some |
|
| 26:38 | movement. The really angry a lot titles, friends, but not as |
|
| 26:45 | appropriate issue. This is just showing shape. Uh, this is California |
|
| 26:55 | out. It's no longer doubt it been completely abandoned. I guess there's |
|
| 27:02 | water coming down. Yes. And little bit of water in 1985. |
|
| 27:09 | really from the 1950 all it's strong the reason is we're using it for |
|
| 27:16 | stream, but nonetheless it has Large. The stream out floor Interpol |
|
| 27:31 | ? And then as you go offshore have the sunday is a cat. |
|
| 27:36 | If you're above section appears, this basically a basic rubio fans, |
|
| 27:45 | Maybe sometime. Oh, but if go offshore, what is places, |
|
| 27:55 | is very important. So we want look at those distribute terry channel |
|
| 28:06 | You're gonna look something like this scalable Grossly firing over. Hello. Almost |
|
| 28:19 | tied around here. The rich of . Yeah, linear top rich of |
|
| 28:34 | the average look at you need ready . So again, uh, free |
|
| 28:45 | influence the things we talked about earlier applied to that. So here would |
|
| 28:51 | another example of the all uh, notice this particular place. And when |
|
| 29:00 | really just by reading side. So is not coming Now when we go |
|
| 29:07 | the or enough of war our tale mm hmm 53. Oh, |
|
| 29:19 | the older I got some new Now as a series of blows that |
|
| 29:26 | basically considered far press that give a all of course. So here's our |
|
| 29:42 | channel, here's our cattle Sandridge questioning . Um, I'm going to skip |
|
| 29:55 | often except to say that this case uh, is of interest because it's |
|
| 30:04 | tides and low waves. No wait fixed. They spread And so even |
|
| 30:12 | the town ranges that average it's The other thing is because it's in |
|
| 30:19 | human region were arranged all the You tend to get a lack of |
|
| 30:23 | surges, lack of explains so that really a different kind of delta. |
|
| 30:31 | , this is what it is Oh now here all yeah, we |
|
| 30:40 | shape decreased with this monster. And you look at the offshore salt. |
|
| 30:52 | . Thanks. Before we start taking , I don't know divided the |
|
| 30:58 | Way you can uh, this is different slope. The reason why that |
|
| 31:12 | happen. But he is a hydrated in part responsible or is speak |
|
| 31:24 | Conversely steve close responsible. Didn't waiting . Yeah, this could be Mississippi |
|
| 31:35 | not gentle. This slope is formed all that set. Sign up |
|
| 31:47 | But because of that gift, we a lot of weight situation. So |
|
| 31:52 | river is actually you do see you that it receives bottom shell sort. |
|
| 32:02 | there's the between the sediment the slope waves as well as the times when |
|
| 32:12 | look at those then begin to look . He still thought to be well |
|
| 32:21 | slopes of these high they are exceptionally of all business. This is |
|
| 32:34 | You just okay, okay. so here is a and the evolution |
|
| 32:47 | bank starts as estuary program and these some cross sections to get Israel |
|
| 33:04 | Now this particular study later, looking at person lower estuary waiting |
|
| 33:18 | they get filled during high stand is nice study of looking at that |
|
| 33:31 | I call me transgresses tied down Yeah. And in other areas you've |
|
| 33:41 | wave dominated wait and yet other areas got driven not. So there's there's |
|
| 33:53 | wide variety um different double patterns that get in that general, you |
|
| 34:05 | Oh it is only because this really to emphasize some of the debt re |
|
| 34:15 | center. Did you get down here ? I don't want to get into |
|
| 34:21 | so much because of the uh It's a deep one. You hear things |
|
| 34:32 | didn't know. Yeah, I know if you want to see entitled components |
|
| 34:38 | the deal. These are the things This four star b. Time on |
|
| 34:48 | mortal contacts, reactivation services head realistic . Uh huh. The mud rates |
|
| 35:00 | bundles entire rhythms. All of these sedimentary features observing the operator and our |
|
| 35:07 | of the delta. So here we for example the opposite of the herringbone |
|
| 35:14 | hand. The and gentle you say a boil sets of the our |
|
| 35:24 | Yeah, vacation services generally again title and double mud trade and so this |
|
| 35:35 | what we look. And also in end with this was being champ |
|
| 35:45 | So if we're looking at a O now it's high, probably we're still |
|
| 35:53 | to get that that fear bit or but she's yeah, are going to |
|
| 36:04 | river. I'm going to be Titley the sedimentary fishes. So again, |
|
| 36:15 | eight succession will give a different sweet . Interesting you It's looking these why |
|
| 36:31 | within that for grading for example, probably not the plague grapes forgetting or |
|
| 36:47 | sensitive what we're looking at. we take one play record when one |
|
| 37:01 | taking it place always. And so you're saying is the Yeah. Mhm |
|
| 37:13 | great. He kind of broke down virtually so degree and that didn't |
|
| 37:23 | It's, it's gonna be a lot progressive. Sure. So a lot |
|
| 37:32 | workers, they die on defining the of the shale Michelle Grapes 2%. |
|
| 37:44 | this is what I want to go to with western sweat. This is |
|
| 37:50 | associated with the well my rival basic . Heavy wheels. Yeah. In |
|
| 37:59 | series of radiation sequences. So this the model that they used and he |
|
| 38:09 | history channels they got gradation too channel water is so they've given you these |
|
| 38:23 | based on core description of different environments you will get in this high ground |
|
| 38:33 | . And one of that year we've these channels. And so this is |
|
| 38:46 | title champ, Sizzle, art scripture channels. Here's our senior |
|
| 39:05 | This is kind of an ISIS One of those, many other features |
|
| 39:12 | the the heart resulted. No, is one of these. This is |
|
| 39:20 | conflict. Never say there's flat Return them report it seems was with |
|
| 39:33 | elongated channels and investigated inner channel And we had this little mouth far |
|
| 39:41 | sits out here. Yeah. And very much what we see in |
|
| 39:51 | The same time elongated channels, elongated and between the least mouth bar sitting |
|
| 40:02 | food. And we can see that we look at these channels here immediate |
|
| 40:15 | to appear, but please strict terry . Yeah. Again, like so |
|
| 40:35 | you look at next sand. Really nice fifth sections uh title sand |
|
| 40:47 | . Going from pro delta Sandridge. we look more carefully, I would |
|
| 40:56 | . Yeah. And for I suppose tend to have one side of linear |
|
| 41:06 | the flood dominant. Exactly. Have this is just kind of an |
|
| 41:14 | Yes. Okay. Get a better it. So increasing you that was |
|
| 41:31 | and all the people, but it's the same path. Sand richard like |
|
| 41:41 | from script. There were channels. poor short base you're mocking mostly finding |
|
| 41:52 | and then walking, getting here and , you'll be a lot time. |
|
| 42:01 | are in the can district check your as far as we look at that |
|
| 42:11 | , we get series finding upwards mostly a channel. Okay, ham sandwich |
|
| 42:22 | yourself. I will send Yeah, here now means forcing up for |
|
| 42:37 | you know, very So you get patterns depending on where you are in |
|
| 42:43 | field. Again on a scratch. back to this is of course |
|
| 42:55 | I'm perfect brooks Jack. But as way of summarizing these adam standpoint, |
|
| 43:11 | think you're rich the S three. they tend the transgressive set, some |
|
| 43:26 | the large talks. It's being Yeah, it's dominated by landward ever |
|
| 43:42 | . Well sorted very well sort of fine regressive stack. What that means |
|
| 43:49 | that each of the packages, it's closer to buy a career transmission. |
|
| 43:58 | bars and headsets ban dealt well angle sit down with trump. See compare |
|
| 44:09 | with guilt. There was a delta seat. We tend to he rode |
|
| 44:16 | or had lower presentation for the top . They're going to be predominantly well |
|
| 44:31 | right offshore really it you're not as funded because river, the former programming |
|
| 44:46 | Thicker bars and more three dimensional cross . Yes. So we've got get |
|
| 44:57 | detail here with your title bar in future. So the last only case |
|
| 45:09 | and they focus on here is this water is and this is any more |
|
| 45:15 | . Yeah. The ferocity is raised when 001 25 huge various you during |
|
| 45:29 | low state run. The little We had played well, we had |
|
| 45:41 | title. It's true and have a lost. This has to be since |
|
| 45:47 | Dominy. That's true. Well, get confused on this because yes, |
|
| 45:58 | not fake. She's an associate way . It's okay. So this is |
|
| 46:11 | or you can really mixed wave pursuits do you have a part for this |
|
| 46:22 | be okay and highly modified. They lot of court's intention as we growing |
|
| 46:38 | , Get this age talked earlier this creepy eight months brilliant that as this |
|
| 46:45 | become transgressive. Let's try down S words then you end up having |
|
| 46:54 | iron rich plays for fluoride. Let important things. So what do you |
|
| 47:05 | we need to think about when we're about these large scale patterns is what |
|
| 47:13 | controlling congregation transgression. And with respect deltas. We see this particularly the |
|
| 47:23 | tied to high type. We see transgression causing a title had dominated estuary |
|
| 47:35 | a regressive tied down down. Whereas way dominated systems, we do see |
|
| 47:42 | wave dominated astronauts and they had But then at the high stand it |
|
| 47:49 | . We have a river Donaghey needs . Now, if it's river dominated |
|
| 47:54 | dominated depends on all the things we about and their reservoir potential difference a |
|
| 48:03 | because their geometries different a lot. we can are, you should by |
|
| 48:10 | have at least access to different examples different stages uh one rivers, delta |
|
| 48:22 | also different rivers in different settings. get a sense of how some of |
|
| 48:29 | things will change. Now I'm gonna here and I'm gonna I'm gonna give |
|
| 48:40 | time off, but I'm also going give you homework center, can and |
|
| 48:49 | homework assignment exactly in anticipation. first of all I normally get |
|
