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Showing results for tags 'chemistry'.
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Soft tissue blood vessels and cells from a Tyrannosaurus rex bone were discovered by Dr. Mary Schweitzer in 2004. Ever since, scientists have wondered how such soft tissues preserve into the fossil record. Finally, we have an answer, based on organic chemistry theory. Below is a link to a recent news article that explains these ideas in layman’s terms. The article itself describes a recently published, peer-reviewed research paper: https://phys.org/news/2023-05-dinosaur-tissues-deep.amp
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Does anyone have any ideas on what transformations an organism undergoes as it becomes an inclusion? Why do they often become translucent or transparent? Why do they often turn black/brown? Do they polymerize? How do some inclusions retain a lifelike or unaltered appearance? Why do exposed sections of inclusions have a crystalline appearance? I'm surprised that I can't find any meaningful answers to these questions.
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https://phys.org/news/2020-11-large-volcanic-eruption-largest-mass.html?fbclid=IwAR0kx9loMz4DZP-V2K4ASrxZxqBP5E_ciswktcaUonT1QrYUCFGvmhzEOt8 Kunio Kaiho et al. Pulsed volcanic combustion events coincident with the end-Permian terrestrial disturbance and the following global crisis, Geology (2020). DOI: 10.1130/G48022.1
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SVANTEARRHENIUS On the Influence of Carbonic Acid in the Air upon the Temperature of the Ground Svante Arrhenius Philosophical Magazine and Journal of Science Series 5, Volume 41, April 1896, pages 237-276. This shouldn't be overlooked in ANY discussion on climate change for "carbonic acid" read "carbon dioxide" The gray box immediately communicates the relevance of this paper about 4,5 MB
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- carbon dioxide
- carbonic acid
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