Shocked meteorites provide clues to Earth's lower mantle
by Karin Valentine, Arizona State University, January 10, 2019
[phys.org]
[scitechdaily.com]

The paper is:

Luca Bindi, Sang-Heon Shim, Thomas G. Sharp, and Xiande Xie,
2020, Evidence for the charge disproportionation of iron in
extraterrestrial bridgmanite. Science Advances 10 Jan 2020:
Vol. 6, no. 2, eaay7893 DOI: 10.1126/sciadv.aay7893
[advances.sciencemag.org]


Yours

Paul H.

"The past is never dead. It's not even past."
William Faulkner, Act 1, Scene III, Requiem for a Nun (1951)