navaskye Posted September 10, 2015 Posted September 10, 2015 Found in central western Colorado. I almost left this one behind, but went back for it, so unusual and makeup of the rock was unlike anything within surrounding terrain. Sort of looks like a jaw, but sort of looks like concrete. There were no roads, no dumping, no structures or any sign of humans, so very odd if it is concrete. But then, there are those striations.....thanks for any clues. About 5 1/2" long.
Auspex Posted September 11, 2015 Posted September 11, 2015 What a curious object! This angle in particular: does look like cement, with its "slickness", air bubbled, and repeating pattern. "There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant “Try to learn something about everything and everything about something.” - Thomas Henry Huxley >Paleontology is an evolving science. >May your wonders never cease!
ynot Posted September 11, 2015 Posted September 11, 2015 I think it is a sand concretion, but have no idea what could have made the pattern in the fourth picture. Tony
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