O
Orogeny
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ScottH said:2. I don’t see rock strata equating to time- I see them more relevant as sedimentary deposits layed at generally the same time having more to do with specific gravity and sedimentary physics than they do with depth = time.
You would be incorrect. If that were the case, all sedimentary rocks would be grouped by lithology - ie all sandstones in one interval, all carbonates in another, all shales in another, all evaporites…oh, yeah. They are not deposited by gravitational settling.
I won’t note that at all based on my field studies. Sorry. Here are a couple of photos found with a quick Google search. Both are from geo.cornell.edu/geology/classes/geol326/photos.htmlYou’ll note that generally no erosion appears between the layers- straight lines accross. If they were “time based” there would be erosion, and it would appear so “straight”. To me its more akin to a viniagrette bottle’s contents layed while wet… or during an unimagineable flood. (The kind of flood that could bury a 25 foot tall Tyrannosaur.)
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By the way, the second photo is of a very famous (geologically speaking) location. This is the place where James Hutton came up with the concept of long time intervals in geology.
I want a beer!
- As for the martini, count me in.
Peace
Tim