More Evidence Permian - Triassic Extinction Not Caused by Extraterrestrial Impact
As time goes on, more and more evidence that the
Triassic - Permian extinction was not caused by an
extraterrestrial impact seems to be accumulating.
Go see:
Geochemical analysis of Chinese rocks used to better
understand the Permian-Triassic mass extinction
by Greg Hand, Physorg, October 16, 2012
http://phys.org/news/2012-10-geochemical-analysis-chinese-permian-triassic-mass.html
Tropical Collapse in Early Triassic Caused by Lethal
Heat: Extreme Temperatures Blamed for 'Dead Zone'
ScienceDaily, October, 18, 2012)
http://www.sciencedaily.com/releases/2012/10/121018141844.htm
Early Triassic's Stifling Heat Made Earth Hostile to
Life, Scientists Say by Jenny Marder, October 18, 2012
http://www.pbs.org/newshour/rundown/2012/10/-some-250-million-years.html
Permian-Triassic Extinction Event May Have Been
Driven By Extreme Warming, Huffington Post,
http://www.huffingtonpost.com/2012/10/18/permiantriassic-extinction-event_n_1981835.html
The papers are:
Sun, Y., M. M. Joachimski, P. B. Wignall, C. Yan, Y. Chen,
H. Jiang, L. Wang, and X. Lai, 2012, Lethally Hot
Temperatures During the Early Triassic Greenhouse.
Science. vol. 338, no. 6105, pp. 366-370
http://www.sciencemag.org/content/338/6105/366
Also, there is the below commentary:
Bottjer, D. J., 2012, Life in the Early Triassic Ocean.
Science. vol. 338, no. 6105, pp. 336-337
http://www.sciencemag.org/content/338/6105/336.summary
Best wishes,
Paul H.
