Sorting the multiple metamorphosis of Archean there in MT seems similar to the challenges East Coast geologists face in the Blue Ridge and western Piedmont. Throw in the understanding that many of these rocks are accreted terranes and you have what we call "a dad-gum mess".
Nice piece, and a nice look at the IU field station. Rather more scenic than U of MT's field station on campus at Southwest Montana College, but it was fun for Easterners to be in such a big cow town in the 1970s.
Oh, NO! "Hypersthene" discredited! Thanks for highlighting these beautiful rocks. I found similar in my mapping and I brought back a beautiful cobble from the Pony Road behind the field station a few years before I retired. I think these um bodies are fragments of a larger um body. (You probably said that in your discussion). If memory serves, there is a layered um in the northeastern Tobacco Roots from which I thought the rocks you refer to might have been ripped. Cheers!
Learned a little but too stupid to understand. Google tells me my city had a mayor from there but my wife tells me there was some kind of scandal in his administration
Sorting the multiple metamorphosis of Archean there in MT seems similar to the challenges East Coast geologists face in the Blue Ridge and western Piedmont. Throw in the understanding that many of these rocks are accreted terranes and you have what we call "a dad-gum mess".
Nice piece, and a nice look at the IU field station. Rather more scenic than U of MT's field station on campus at Southwest Montana College, but it was fun for Easterners to be in such a big cow town in the 1970s.
Not to mention the vegetation cover you have in the east! Indiana's "cow town" was Saturday nights in Whitehall.
Yep, kudzu, ticks, and snakes in abundance, especially at roadcuts.
I learned that hypersthene is no longer a thing!
Oh, NO! "Hypersthene" discredited! Thanks for highlighting these beautiful rocks. I found similar in my mapping and I brought back a beautiful cobble from the Pony Road behind the field station a few years before I retired. I think these um bodies are fragments of a larger um body. (You probably said that in your discussion). If memory serves, there is a layered um in the northeastern Tobacco Roots from which I thought the rocks you refer to might have been ripped. Cheers!
Your commentary is always lucid and enlightening.
Oh thanks! I try to explain jargon when it comes up (as it often must).
Learned a little but too stupid to understand. Google tells me my city had a mayor from there but my wife tells me there was some kind of scandal in his administration