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Questions related from Álvaro García-Penas
Hi everyone. I'm studying an upper Aptian carbonate succession of NE Spain which has traditionally been considered to be devoid of rudists due to paleoenvironmental stress. I'm not at all...
20 June 2023 2,502 6 View
Hi everybody. I'm currently writing a manuscript and there are discrepancies between authors on the use of "marl" and "clay", some of them suggesting that these are outdated terms that should be...
29 March 2023 396 2 View
Hello, everyone. I'm studying an Aptian shallow marine succession (Western Tethys) and I have come across this strange structure in one of my samples. I originally thought it was some kind of...
30 August 2022 7,294 6 View
Hi everyone! I'm working on sequence stratigraphy of shallow-water marine carbonates from the Lower Cretaceous of Spain. I've been trying to find an explanation for a specific sample's texture for...
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I'm having trouble identifying the round bioclasts indicated by white arrows. Could they be transverse sections of the elements indicated by black arrows? If so, could they be some kind of spicule?
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