Including Original "Paul H. Letters" Copyright © 1996-2024 Paul V. Heinrich / website © 1996-2024 Dirk Ross - All rights reserved.



Thursday 18 June 2020

New insights into the Great Dying, the Permo-Triassic mass extinction 18JUN2020

 New insights into the Great Dying, the Permo-Triassic mass extinction

New insight into the Great Dying, University of Leeds, June 11, 2020

The open access paper is:

Jacopo Dal Corso, Benjamin J. W. Mills, Daoliang Chu,
Robert J. Newton, Tamsin A. Mather, Wenchao Shu,
Yuyang Wu, Jinnan Tong, and Paul B. Wignall (2020)
Permo-Triassic boundary carbon and mercury cycling
linked to terrestrial ecosystem collapse.
Nature Communications 11, Article number: 2962

Another article is:

Coal-burning in Siberia led to climate change
250 million years ago, Arizona State University

The open access paper is:

Elkins-Tanton, L.T., Grasby, S.E., Black, B.A., Veselovskiy,
R.V., Ardakani, O.H. and Goodarzi, F., 2020. Field evidence
for coal combustion links the 252 Ma Siberian Traps with
global carbon disruption. Geology, 48. (open access)

Yours,

Paul H.

Friday 12 June 2020

Cryptoexplosive Structures in Missouri: Guidebook, 1965 12JUN2020

 Cryptoexplosive Structures in Missouri: Guidebook, 1965

Snyder, F.G. and Williams, J.H., 1965. Cryptoexplosive
Structures in Missouri: Guidebook, 1965 Annual Meeting,
the Geological Society of America (No. 30). State of
Missouri, Division of Geological Survey and Water
Resources.

Yours,

Paul H.

Tuesday 2 June 2020

UV-B radiation blamed for Devonian-Carboniferous boundary terrestrial extinction 02JUN2020

 UV-B radiation blamed for Devonian-Carboniferous boundary terrestrial extinction

End-Devonian Mass Extinction Caused by Erosion
of Ozone Layer, New Study Finds, Sci-News. May 28, 2020
http://www.sci-news.com/paleontology/end-devonian-mass-extinction-erosion-ozone-layer-08477.html

No asteroids needed: ancient mass extinction tied
to ozone loss, warming climate By Paul Voosen
Science News, May. 27, 2020
https://www.sciencemag.org/news/2020/05/no-asteroids-or-volcanoes-needed-ancient-mass-extinction-tied-ozone-loss-warming

The paper is:

John E. A. Marshall,  Jon Lakin, Troth, and
Sarah M. Wallace-Johnson, 2020, UV-B
radiation was the Devonian-Carboniferous
boundary terrestrial extinction kill mechanism.
Science Advances 27 May 2020: Vol. 6, no. 22, eaba0768
DOI: 10.1126/sciadv.aba0768
https://advances.sciencemag.org/content/6/22/eaba0768
https://advances.sciencemag.org/content/6/22/eaba0768/tab-pdf

yours,

Paul H.