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Showing results for tags 'lower pennsylvanian'.
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Dark gray limestone matrix with unknown fossils, corals? bryozoans? something else?
SPrice posted a topic in Fossil ID
The Utah geologic map describes the location/formation as Manning Canyon Shale (lower Pennsylvanian and upper Mississippian) with black to brown shale with numerous thin beds of light-brown-weathering, gray, fine- grained, shaly sandstone, some lenses or beds of rusty-weathering grit, and one or more thick beds of gray to black, cherty limestone; at least in west contains some beds of light-brown quartzite; shale is carbonaceous with occasional nodules of marcasite. The area I was exploring the most was this type of rock - thick beds of gray to black, cherty limestone - as described above. There were several outcrops of limestone ridges along the rolling hills on the west side of Utah Lake. The area is BLM land with a sign at the gate reminding visitors that Shooting is Not allowed because of the ancient petroglyphs and risk of wildfires. Also, no collecting on this location. So I took only photos and left only footprints on this excursion. Here's the images of what I saw. Standing on an outcrop of limestone with Mt. Timpanogos in the left background, 11,752' summit. This elevation is around 4700' ASL. And just below the lizard's head is a fossil that I think might be bryozoa. There are also at least 3 lichen species mixed among the fossil. Brown bulbous, gray and orange ones. Zoom in to see the fossil best. Thanks for any responses. Steve -
Okay, I left this specimen where I could find it in the future, but the sun and atmosphere was such I could not get a crisp photo or achieve a decent zoom. It almost appears bryozoan in nature, but the regular spacing and rounded conic shapes might be something someone has seen before?
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Hi, noone will hurt my feelings if this turns out to be geological and not an orthocone cast. I was exploring for other fossils when I chanced upon 3 separate specimens of the following. They were all about the same dimensions and appearance so I decided to bring one home. What the heck it only weighed a couple of pounds. 7.5" x 3" at the widest. Elliptical shape on left end a side view
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Okay, while on a ramble in the mountains, among other things I chanced upon this pile of petrified wood. Looks like heavy iron mineralization. Black, red, orange, yellow and near white for colors. Banding in the wood. In the white area, it sure looks like insect bore holes like I used to see when cutting firewood. Not that it is, it just looks like it. This piece seemed to look it had bark to me. Or maybe it is where two branches split so the wood grain was heavily intermixed and confused. Again, I come up stumped with finding reference to a fossil type in our local formations. This time no reference to petrified wood just things like ferns, cordaites, etc for plant life. (1) Are folks finding petrified wood elsewhere in the lower Pennsylvanian? (2) Has anyone seen insect bore holes in their wood specimens? (3) Please advise your thoughts on bark versus complex wood graining? I can provide higher resolution and zoom in if need be. Thank you, Kato
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