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Faith  Suspended Member (Idle past 1474 days) Posts: 35298 From: Nevada, USA Joined: |
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Author | Topic: How the geo strata are identified as time periods | |||||||||||||||||||||||
kuresu Member (Idle past 2543 days) Posts: 2544 From: boulder, colorado Joined: |
even if he's not, his first post seemed really well done. And it works for what Faith wants to do. So unless there does happen to be a geologist on the forum, that we know of or who will make himself known, I say let Jar handle this, eh?
not that I have that much weight around here. All a man's knowledge comes from his experiences
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kuresu Member (Idle past 2543 days) Posts: 2544 From: boulder, colorado Joined: |
yeah, it's kinda difficult to learn the basics of something without it being a course.
naturally, that's where those things are introduced--geology courses, and sometimes a background of previous geology courses are required. and I'm no geologist, so I can't help. as far as resisting the urge to defend the flood, perhaps we can do this. it can be a session between, say, me and jar. and he can teach me geology, slowly. I'll ask as many questions as possible that seem relevant. that work?anyone else have a problem with this proposal? All a man's knowledge comes from his experiences
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kuresu Member (Idle past 2543 days) Posts: 2544 From: boulder, colorado Joined: |
I think she wants someone else to ask the questions, and as such, I proposed last night that I ask the questions--seeing as how I know little about geology.
that way, she can just watch. And faith already said she had no problem with me doing this--just waiting on (you?) to agree. so if you do agree, bring it down to as nontechnical an explanation as you can--treat me as if I'm in the first day of geology 101 at college (second day for me in real life--but no geo class ). All a man's knowledge comes from his experiences
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kuresu Member (Idle past 2543 days) Posts: 2544 From: boulder, colorado Joined: |
Okay, so here's my first question. or first set.
1)what are the layers made out of. 2)do the different materials have different settling. As in, how does each type of rock settle. 3)as a continuation of 2, how do the layers settle. all I can ask, is KISS, or maybe KISP is more polite. I want to know if there are any basic rules to settling, and if so, what are they--again, the basics. All a man's knowledge comes from his experiences
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kuresu Member (Idle past 2543 days) Posts: 2544 From: boulder, colorado Joined: |
length aint a problem for me.
okay--so settling doesn't have much, if anything, to do with the layers forming? okay, on to the igneous rocks. I knew the three types, and I know that each has several categories, but . . . 1)what is an intrusive igneous rock?2)same for the other category (extrusive or volcanic?) 3) how does each form (answered with the appropriate previous question, perhaps uneccessary question here. 4)might sound a little stupid, but how do the igneous layers form? All a man's knowledge comes from his experiences
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kuresu Member (Idle past 2543 days) Posts: 2544 From: boulder, colorado Joined: |
Settling does have much to do with layers forming. It is just isolated to sediment or ash falling out of suspension. It just does not seem to call the creation of the other rock types by that name. okay, got it. (abe: just saw percy's questioning what you said, and your "oops". But now I'm a little confused--the argument between Jazznz and Coragyps. As far as layer formation is concerned, how much does the settling of particles have to do with determining that layer's age?) learn something new everyday--for whatever reason, I had thought granite was sedimentary. makes much mor sense for it to be igneous. considering how durable it is. 1)is a single layer uniform. By this, I mean: is a layer all of one material, or can it be composed of other materials, like, say, extrusive rocks? 2)I think I get what you mean about it being difficult to have intrusive igeous being a part of a layer. Then, can the batholiths and plutons (I think I know what they look like--quick check though--sort of like the magma chamber in a volcano?) be used to help dating. 3)How are extrusive rocks used to help date? Is it just by being used as a reference point, like, you know A is before J, but not how long before? Or, is it possible to also use it for absolute dating--where you know exactly how long A is before J? Edited by kuresu, : No reason given. All a man's knowledge comes from his experiences
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kuresu Member (Idle past 2543 days) Posts: 2544 From: boulder, colorado Joined: |
sorry for taking a while on this--was interrupted by a birthday party--good one too.
anywho . . . Okay, I've got relative dating, it seems. It's all logical. now on to the absolutes. 1)what is it about igneous rocks over sedimenatary (can metamorphic rocks be part of a layer?) that allows us to absolutely date them? 2)what methods allow for absolute dating? Is there more than one, in other words? 3) for relative dating, besides what you showed, are there methods for finding out about how old those inbetween layers are? if there are, what are they? All a man's knowledge comes from his experiences
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kuresu Member (Idle past 2543 days) Posts: 2544 From: boulder, colorado Joined: |
so you can absolute date igneous and certain metamorpich rocks, but you can not use the metamorphic rocks to date layers.
reason being, the rock was laid down first, and then metamorphised. And since metamorphic rock only comes from sedimentary rock, and since sedimentary rock cannot be dated absolutely due to coming from many different sources, you only get the date when the sedimentary rock metamorphised and trapped any radioactive isotopes. correct? this means that for all intents and purposes, only layers with igneous rocks can be absolutely dated. 1)can igneous rocks come from any other source?2)can an igneous layer be inserted inbetween two pre-existing layers? (note that I'm not asking if they can be put at the bottom by batholiths and plutons, hold on, new question) 3)in the case of batholiths and plutons contact metamorphising rocks: could the newly metamorphised rocks be dated younger than those on top of them? All a man's knowledge comes from his experiences
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kuresu Member (Idle past 2543 days) Posts: 2544 From: boulder, colorado Joined: |
okay, so what I'm getting is:
The flood is OFF TOPIC here! Thank you.the geology presented here busts the Flood. unless the Flood also produced the igneous rock layers, there's no way that the flood happened at the global scale. 1)only magma produces igneous rocks2)any intrusions of magma that are parallel can still be found to be an intrusion, and thus younger than what had been laid down before 3)the radiometric dating is done with the igneous rocks even if radiometric dating is wrong (which I don't think) there's still no way for a flood to deposit layers of igneous rocks, expecially those due to lava flows and ash, right? Edited by AdminNosy, : Topic warning All a man's knowledge comes from his experiences
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kuresu Member (Idle past 2543 days) Posts: 2544 From: boulder, colorado Joined: |
what the??
I've heard the name before, (no clue what it is) and since you're just asking for it, how? All a man's knowledge comes from his experiences
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