The Hamburg, Michigan H4 chondrite

The Hamburg, Michigan H4 chondrite

Scientists: 2018 Michigan meteorite filled with organic compounds., Dan Robitzski, Futurism
https://futurism.com/the-byte/pristine-meteorite-organic-compounds

The open acccess paper is:
Heck, P.R., Greer, J., and others, 2020. The fall, recovery, classification, and initial characterization
of the Hamburg, Michigan H4 chondrite. Meteoritics & Planetary Science. Early View.
https://onlinelibrary.wiley.com/doi/full/10.1111/maps.13584

Yours,

Paul H.

NASA Discovers a Rare Metal Asteroid

NASA Discovers a Rare Metal Asteroid
https://observer.com/2020/10/nasa-discover-asteroid-pysche-metal-10-quadrillion/

The open access paper is:
Becker, T.M., Cunningham, N., and others, 2020.
HST UV Observations of Asteroid (16) Psyche.
The Planetary Science Journal. vol. 1, no. 3
https://iopscience.iop.org/article/10.3847/PSJ/abb67e

Yours,

Paul H.

Clovis range predates and postdates hypothetical Younger Dryas Event

Clovis range predates and postdates hypothetical Younger Dryas Event

Clovis people: Narrow window of tool-making
Tools made by some of North America's earliest
inhabitants were made only during a 300-year period
Texas A&M University, PhysOrg, October 23, 2020
https://www.sciencedaily.com/releases/2020/10/201023123104.htm

Clovis range is ~13,050 to 12,750 cal yr B.P.
according to Figure 2 of below paper. Thus, this
interpretation has Clovis culture unaffected by
whatever happened at the Younger Dryas Boundary.

The Open Access paper is:
Michael R. Waters, Thomas W. Stafford, David L.
Carlson. The age of Clovis—13,050 to 12,750 cal yr
B.P.. Science Advances, 2020; 6 (43): eaaz0455
https://advances.sciencemag.org/content/6/43/eaaz0455

Yours,
Paul H.