quote:
OK, checked my notes:

1.4 billion Pikes Peak Granite
1.7 billion Royal Gorge Gneiss

I felt like 1.7 was floating in my brain...just had to make sure.

Thanks Pectus. I find geology really interesting. I never paid much attention to it until I moved out here but now I'm surrounded by it. It's really interesting to drive around and look at how the rock types change as you travel. For example, around here, it's red sandstone (eroded remnants of the ancestral Rocky Mountains) with granite intrusions such as Pikes Peak. Further south it's more volcanic. You see dikes and sills and old dormant volcano cones.

Also, I think I read that the Pikes Peak batholith that Pikes Peak formed from is 1.06 billion. But there are other ones with the same K-feldspar granite that are older. I'm guessing the one around Canon City (Royal Gorge area) is one such.

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Posted by fr33manator

Baton Rouge

Member since Oct 2010

124708 posts

Posted on 7/10/14 at 5:56 pm to MountainTiger

Little known fact: Pectus actually penned Twisted Sister's hit song, "I Wanna Rock."

At one point Pectus thought he had found a massive coprolite, but it was really just a pile of schist.

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Posted by Pectus

Internet

Member since Apr 2010

67302 posts

Posted on 7/10/14 at 8:08 pm to MountainTiger

quote:

Thanks Pectus. I find geology really interesting. I never paid much attention to it until I moved out here but now I'm surrounded by it. It's really interesting to drive around and look at how the rock types change as you travel. For example, around here, it's red sandstone (eroded remnants of the ancestral Rocky Mountains) with granite intrusions such as Pikes Peak. Further south it's more volcanic. You see dikes and sills and old dormant volcano cones.

Also, I think I read that the Pikes Peak batholith that Pikes Peak formed from is 1.06 billion. But there are other ones with the same K-feldspar granite that are older. I'm guessing the one around Canon City (Royal Gorge area) is one such.

No prob. Glad you love Colorado and its geology. I worked for 3 summers out there as a teacher/field geologist, it was amazing. I go up every year to conduct my field research as well. On top of that I have friends and family that live there. Needless to say I make it up there about twice every year. I want Colorado to be where I permanently establish my residence.