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Showing results for tags 'metamorphic'.
LindsayWilson posted a topic in Fossil IDI found this in our backyard in a rock pile. I find many Devonian fossils in the shale lined creeks around Erie, PA. This rock appears to be similar but is extremely heavy and different colored. I can make out fossils but don’t recognize some of the imprints abs it appears folded and is SUPER heavy. For comparison, the rock I found with it, also pictured here is about 3-4x the size but the smaller one weighs 3x as much. No magnetism, but has a burnt spot. Was it perhaps originally a large piece of the lighter fossil plate that someone burned (possibly in a fire pit?) and that is how i
Found this formation on the bank of the Dnieper River, Ukraine, Kherson region. Sizes: 73mm length and 32mm width. Composition: the surface layer consists of steatite; the next layer is similar in color to the bone, has many small (less sand) and a little medium-sized pores, a hardness of about 4,5-5, actively foams under the action of hydrochloric acid; the inner layer of blue material has a dense structure similar to flint or chalcedony with impurities, chalcedony does not scratch. Can it be hidrotermal metamorphic fossil, or simply geology formation?
Innocentx posted a topic in Fossil Hunting TripsAll the beauty you see against the blue sky is a story of time from the book of rocks, uplifting, cleaving, and eroding in wonderful ways. I searched and got this Socorro County geologic map. A rather immense amount of study involved in this document. Best at 175% zoom. If I lived there all the time I might come to understand it. https://geoinfo.nmt.edu/publications/openfile/downloads/200-299/238/ofr_238.pdf