00:07 | You and for the two people that gonna be looking at this, |
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00:10 | don't delay. Um, when you at the E logs, uh, |
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00:14 | see a sharp, you see a face hang on shot base here, |
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00:26 | base here, then it's broadly finding and sharply truncated. Ok. |
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00:35 | this is our point bar. So gonna be c and this is the |
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00:40 | channel. So that's gonna be So those two are pretty straightforward. |
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00:46 | , mainly mud, those spikes of uh, silt probably, uh, |
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00:51 | gonna be the flood plain. So e pretty straightforward. Uh This one |
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00:56 | be a little confusing. It could a couple of things. Most likely |
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01:01 | looking at the Crevasse play. uh, it could be b uh |
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01:11 | D although D looks more like it's be a crevasse channel. Uh, |
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01:16 | I'd give you credit for either. , not likely to be levy because |
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01:22 | levee at least is shown here is gonna be coarsening upward. |
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01:27 | you made it? Yeah, I thinking you weren't gonna make it. |
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01:43 | . My problem. Thank you. And so if this were a |
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01:52 | it would be both coarsening upwards and upwards. Now, what that would |
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01:57 | me is that either the stream was closer and it's coarsening upwards and then |
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02:04 | away or it gradually shut down. . So less likely for a |
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02:10 | Ok. Uh Let's look at this here. Um I, I tried |
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02:17 | make it as simple as possible. wasn't always um successful. Uh But |
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02:22 | of all, I assumed you could the face she track, which was |
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02:28 | the cross section and vertical sequence of simple meander bar. So I tried |
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02:34 | make it as simple as possible in it, it is not a uh |
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02:38 | grained compound bar, it's just basically point bar. And so here's what |
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02:45 | looking at. And so uh the thing is there's gonna be a channel |
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02:50 | gonna migrate. And so it's gonna uh basically series of laterally accreting point |
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03:07 | . Beg pardon? OK. Uh accreting point bars. OK. And |
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03:15 | so this is a good place to The bounding services. The 5th order |
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03:24 | these would either be uh three or . OK. And then internally, |
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03:30 | can describe those a little better Uh In others, here's the fifth |
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03:36 | basic channel you've got looks like maybe three of these um bounding |
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03:50 | Then internally you're looking at maybe something this that is to say, mainly |
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04:03 | cross strad on the bottom, uh more parallel to ripples or rippled to |
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04:10 | , something like that. Ok. are each of the flood packets that |
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04:13 | looked at. Ok. Now, could also have inferred that down |
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04:19 | there should be some abandoned channel, or not. Um If, what |
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04:25 | saying, if you did through it I did, uh, there's no |
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04:30 | channels filled, it's just active channel then it shut off. Ok. |
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04:34 | Now you also should have drawn the and that would have been something like |
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04:39 | course developments. Ok. So that's I'm looking for. Uh When you |
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04:45 | at your exam. Ok. Uh , typical tidal flat face, she's |
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04:50 | and vertical sequence. What I should said is in cross section that may |
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04:56 | confused you a little bit. Uh uh the first part, the |
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05:03 | she's track, there's a lower middle upper tidal flat. Ok. That |
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05:12 | is gonna be the sandy tidal The middle is gonna be the mixed |
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05:18 | flat. Uh The sear upper is be the muddle mud or muddy tidal |
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05:25 | . So that was pretty straightforward. 123 here, it helps if you |
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05:35 | the meandering channel. Ok. Uh would be the uh inclined heterogeneous |
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05:44 | basically mud and sand. Ok. probably a little gravel right down here |
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05:50 | the base. Ok. So once done that, you can think |
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05:54 | ok. The so far is then to grade into the upper mud, |
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06:05 | , middle mud flat or tidal flat said in lower tidal flat. |
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06:14 | it doesn't really matter where you draw boundaries. Um You don't have enough |
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06:20 | , but you should know that that sequence is going to be uh the |
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06:28 | to sand and mud, to And then within there, you're gonna |
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06:35 | the range from pleasure to lenticular cross , ok. In terms of |
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06:44 | ok. Now, you could have it. Um Let's see, I |
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06:52 | erase it very well. Uh You have drawn it pro grading like |
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06:59 | OK? But the key is you it sandy mud, flat, mixed |
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07:07 | flat or sandy title flat, rather title flat, upper tidal flat |
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07:17 | And then the salt marsh is really super. OK. Uh This section |
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07:24 | again, uh I I told you you need to describe the vertical sequence |
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07:30 | this. OK. And sub divide into things like the foreshore or out |
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07:35 | foreshore sector. And what is the to find? Well, I kind |
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07:41 | gave you a strong hint by leaving little tick marks. OK. Um |
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07:49 | , first of all, this is entire uh pair of Sequels. Uh |
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07:55 | is the foreshore, this is the face, upper, short face, |
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08:10 | , lower, short face, lower to face and then offshore. |
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08:19 | . Now, each of these is to have uh a set of characteristics |
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08:24 | you can kind of infer by looking the sketches. So I just wanted |
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08:28 | , a sentence or two, saying what you would find in each |
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08:34 | these. Ok. Um, and say a sinister to, uh, |
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08:40 | most you're looking at uh, five for each category. Ok. |
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08:49 | so let me stop for a Uh We're still recording. Do any |
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08:53 | the three of you here? Have questions on what I've just gone |
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09:05 | Ok. Well, let me stop video. Um, |
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