Volcanic tuff gives new data about Permian-Triassic extinction event

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It's not often that scientists are able to find tuff in continental sedimentation, but this was accomplished in the PreUrals region by Kazan Federal University, Borisyak Institute of Paleontology, and Institute of Geology.

"We calculated the precise age of the upper layers of the continental formation of European Russia. The age is 253.95 million years, and this helped us to directly compare sea and continental sedimentation, something that would be impossible with the sole use of paleontological methods. This is a first opportunity to directly compare fauna associations of terrestrial vertebrates in Russia, Southern Africa, Greenland, and India. Thus, we can determine the length of thaws and glaciations in European Russia in late Permian," says co-author Vladimir Silantiev.

Source: https://archaeologynewsnetwork.blogspot.com/2020/06/analysis-of-volcanic-tuff-gives-new.html