The Shunga Event: Paleoproterozoic petroleum deposits, a possible mass extinction, and Vredefort impact 30MAY2021

The Shunga Event: Paleoproterozoic petroleum deposits, a possible mass extinction, and Vredefort impact

The Shunga Event; did a Precambrian mass extinction give rise to an ancient supergiant oil field?
https://www.geological-digressions.com/the-shunga-event-did-a-precambrian-mass-extinction-give-rise-to-an-ancient-supergiant-oil-field/

Geological Digressions, Earth science resources, SCICOMM
https://www.geological-digressions.com

Ancient Earth, Precambrian geology, origin of life, atmosphere, oceans
https://www.geological-digressions.com/ancient-earth/

Yours,

Paul H.

Extraterrestrial Plutonium Found On Ocean Floor 23MAY2021

Extraterrestrial Plutonium Found On Ocean Floor

Freshly Made Plutonium From Outer Space Found On Ocean Floor
By Nell Greengrocer, NPR, May 13, 2021
https://www.wrkf.org/2021-05-13/freshly-made-plutonium-from-outer-space-found-on-ocean-floor

Scientists Find Plutonium Made in Outer Space on Ocean Floor Research suggests the rare, heavy element may have been created by the collision of two neutron stars, Smithsonian Magazine
https://www.smithsonianmag.com/smart-news/scientists-find-plutonium-made-outer-space-deep-sea-crust-180977739/

The paper is:

Wallner, A., Froehlich, M.B., Hotchkis, M.A.C., Kinoshita, N., Paul, M., Martschini, M., Pavetich, S., Tims, S.G., Kivel, N., Schumann, D. and Honda, M., 2021. 

60Fe and 244Pu deposited on Earth constrain the r-process yields of recent nearby supernovae. 

Science, 372(6543), pp.742-745.
https://science.sciencemag.org/content/372/6543/742.abstract

Yours,

Paul H.

Dating Wolfe Creek Crater, Australia 21MAY2021

Dating Wolfe Creek Crater, Australia

Dating Craters: Wolfe Creek is younger Meteor Crater older, than previously thought
https://www.syfy.com/syfywire/dating-craters-wolfe-creek-is-younger-meteor-crater-older-than-previously-thought

Barrows, T.T., Magee, J., Miller, G. and Fifield, L.K., 2019.
The age of Wolfe Creek meteorite crater (Kandimalal),Western Australia. 

Meteoritics & Planetary Science, 54(11), pp.2686-2697.

Yours,

Paul H.

Recent active volcanism on Mars 15MAY2021

Recent active volcanism on Mars

Bad Astronomy | Volcanism on Mars may still be active today
https://www.syfy.com/syfywire/more-evidence-that-mars-is-volcanically-active-right-now-today



Horvath, D.G., Moitra, P., Hamilton, C.W., Craddock, R.A. and Andrews-Hanna, J.C., 2021. 

Evidence for geologically recent explosive volcanism in Elysium Planitia, Mars. Icarus, p.114499.
PDF file: https://arxiv.org/pdf/2011.05956.pdf

Link:
https://www.researchgate.net/publication/345756656_Evidence_for_geologically_recent_explosive_volcanism_in_Elysium_Planitia_Mars

More papers:
https://www.researchgate.net/profile/Pranabendu-Moitra

Yours,

Paul H.

An investigation of the Echo Cliff structure, Kansas 3MAY2021

An investigation of the Echo Cliff structure, Kansas

Lane, A.E., 2018. The Echo Cliff structure: identification and analysis of a possible Kansan impact structure. unpublished thesis, Kansas State University, Manhattan, Kansas.
https://krex.k-state.edu/dspace/handle/2097/38882
https://krex.k-state.edu/dspace/bitstream/handle/2097/38882/AdamLane2018.pdf

The abstract states:

"...variations in the topography of the Precambrian basement and
faulting from the Bolivar-Mansfield Tectonic Zone are responsible
for the geophysical anomalies..."

and

"Therefore, there is currently no evidence in support of the
claim that the Echo Cliff structure is an impact structure."

Yours,

Paul H.