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184
185

Dat uplift (i.imgur.com)

submitted ago by DeskFlyer

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[–]DeskFlyer[S] 8 points9 points ago

At least I think that's what it's called; I'm no geologist. Apparently this was taken in Boulder, CO.

[–]tchomptchomp 20 points21 points ago

That was absolutely taken in Boulder. Those are the iconic Flatirons. They're huge resilient slabs of Fountain Formation sandstone and conglomerate rom the late Pennsylvanian, which are fluvial deposits proximal to the ancestral rockies.

Speaking here as someone who took field geology classes right there and who has also climbed a few of those slabs as well.

[–]DeskFlyer[S] 4 points5 points ago

Awesome! Thanks for the great info.

[–]eatpussyallday 2 points3 points ago

Yes quite awesome Sir

[–]T0mb0 1 point2 points ago

Hurray for CU field classes. Did you get to map the NCAR region?

[–]tchomptchomp 1 point2 points ago

Yep. Alan Lester's Intro to Field Geology, back before Alan quit geology and became a pilot or whatever he's doing now.

Good times.

[–]eslice 1 point2 points ago

They're analogous to the palisades on the front range of the Beartooth platueau in Montana, and the corresponding Cambrian carbonates and Tertiary fluvial deposits.

[–]aelendel 3 points4 points ago

Another word for it is orogeny.

Oh, geologists.

[–]tchomptchomp 3 points4 points ago

Well, a lot of the sediments in the Fountain Formation, including the flatirons, are crevasse-splay deposits, so....

[–]aelendel 4 points5 points ago

http://xkcd.com/1082/

[–]tchomptchomp 4 points5 points ago

So I guess you don't want to know then that the fountain formation rests uncomformably over the silver plume granite, which is pegmatitic in much of that region.

I also assume you don't want to know about Valmont dike, which cuts right through that whole sequence.

[–]aelendel 4 points5 points ago

Oh my.

Let me get my girlfriend.

[–]e-wing 0 points1 point ago

They really expect us to believe that they are in a rift valley that was caused by a thrust fault? I find that highly unlikely. In fact, the very idea is quite laughable. Said in the voice of Database.

[–]tchomptchomp -1 points0 points ago

It's almost as if Randy Munroe doesn't care about science other than his own unless he's making cheap jokes to look nerdy....

[–]pyx 0 points1 point ago

Are you saying that orogeny is synonymous with uplift? I so, you would be incorrect.

[–]aelendel -2 points-1 points ago

This is /r/geology, not /r/can't take a joke.

[–]pyx 0 points1 point ago

What joke?

[–]aelendel 1 point2 points ago

....

Orogeny.

[–]pyx 0 points1 point ago

I don't get it at all. You aren't very funny.

[–]aelendel 3 points4 points ago

...

uplift

[–]YouCantBeThatDumb 13 points14 points ago

http://fineartamerica.com/images-medium/construction-of-the-flatirons--1931-jerry-mcelroy.jpg

Clearly this has nothing to do with geology. Man made. LOL ( as an ex boulderite this is one of my favorite pics)

[–]ERRYDAYIMSTRUGGLING 5 points6 points ago

My dad had this picture framed in his office, and had me believing from ages 6 to ten that they were manmade. Scumbag Dad moment right there.

[–]expandingjoy -1 points0 points ago

nice photoshop. almost as good as sci/fi tv production quality

[–]jowla 2 points3 points ago

Where the mountains literally broke through the plains

[–]agent_ochre 2 points3 points ago

Here's another. Bonus points if you know the location from the photo. uplift

EDIT: It's the front range of the Beartooths in south-central Montana.

[–]eatpussyallday 0 points1 point ago

reservoir behind there?

[–]Boom_Selecta 1 point2 points ago

chautauqua park, I'm a geology grad student at CU

[–]tchomptchomp 0 points1 point ago

Which lab?

I'm not there anymore, but I did my undergrad there...

[–]tchomptchomp 3 points4 points ago

Dat Fountain Formation.

[–]geophys42 0 points1 point ago

What really gets me goin, is that Great Nonconformity just behind the Flatirons. 300 Million Year old Fountain formation on top of 1.4 Billion Year old Boulder Creek Granodiorite. OOO 1.1 Billion Years of missing history covering a two inch boundary. Sexy.

[–]tchomptchomp 0 points1 point ago

Yes.

Originally thought it was silver plume granite, but I don't really remember my igneous provinces too well.

[–]ERRYDAYIMSTRUGGLING 1 point2 points ago

Hurray for the Flatirons!

[–]DeskFlyer[S] 1 point2 points ago

I feel like an idiot for not knowing this even existed before I discovered this photograph just the other day. :/

[–]GrimReaperPeaches 0 points1 point ago

Always thought these were hogbacks.

[–]TrevX9 1 point2 points ago

I can see these beautiful bastards out of my bedroom window right now. Boulder's a great place to be a geologist (if I had a full time job, that is).

[–]fernandomartinez 0 points1 point ago

Boulder is a great place for a geologist. I work there for two summers!

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