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Showing results for tags 'quaternary fill'.
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Every now and then I find something odd on the ground in the backcountry. Do not feel this is a fossil. At first glance I thought this was just some siliceous ooze with intricate folds. At second glance I noted the broken surfaces were not conchoidal as one would expect with silicate materials. It almost appears like extremely fine-grained basalt on the broken ends Specimen is 1.5" (38mm) long and 1.25" (32mm) wide. Thickness is 3/8" (8-9mm) I'll call this the top view. Primarily very dark black Bottom view has a decided reddish cast in places. Note the broken end on the left. Another broken section on the side. Small vesicles. Some strange inclusion on the left. Another exposed side section If it is igneous in origin that would be interesting because the closest igneous activity is about 70 miles away and would imply transported in by ancient peoples. Any geologic thoughts to send my way? Thank you, Kato
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- new mexico
- sacramento mountains
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