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Showing results for tags 'hills'.
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Hi, I found these shapes in the rock so I'm not sure if they are concretion or something else.Can someone identify them?
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I'm wondering if anyone has some good images that show the difference between the fox hills formation and underlying pierre shale formation? I've been reading geological report after report, but have been unable to find anything that shows a good picture of how I can tell the 2 formations apart when out in the field. I'm heading to Montana next month and have read Rockhounding Montana about 5x over, but there's not really any pictures that help differentiate the strata. I've also gone through several search engines for hours over the last 6 months too, to not much avail. I've got the geological maps of the area along with the BLM maps, but just would like to see a more real world photo. I would like to thank anyone in advance for their help.
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