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



Monday, 16 August 2021

Why don’t we see more meteorites after big asteroid belt collisions? 16AUG2021

Why don’t we see more meteorites after big asteroid belt collisions?

Why don’t we see more meteorites after big asteroid belt collisions?
Terrawatch Meteors, Kate Ravilious, The Guardian, August 3, 2021
https://www.theguardian.com/science/2021/aug/03/terrawatch-why-dont-we-seemore-meteorites-after-big-asteroid-belt-collisions

The paper is:

Terfelt, F. and Schmitz, B., 2021. Asteroid break-ups and meteorite delivery to Earth the past 500 million years. Proceedings of the National Academy of Sciences, 118(24) no. e2020977118.
https://www.pnas.org/content/118/24/e2020977118.short

Yours,

Paul H.

4.6 billion-year-old meteorite found in horseshoe footprint 16AUG2021

4.6 billion-year-old meteorite found in horseshoe footprint

4.6 billion-year-old meteorite found in horseshoe footprint
By Stephanie Pappas, Live Science
https://www.livescience.com/rare-carbonaceous-carbonate-meteorite-found.html

The meteorite is a rare carbonaceous chondrite

Yours,

Paul H.

Tuesday, 10 August 2021

A 4,565-My-old andesite from an extinct chondritic protoplanet 10AUG2021

A 4,565-My-old andesite from an extinct chondritic protoplanet

4.6-billion-year-old meteorite belongs to Earth’s long-lost baby cousin
By Mindy Weisberger, Live Science, March 8, 2021
A protoplanet in the early solar system spawned a unique type of meteorite
https://www.livescience.com/meteorite-asteroid-early-solar-system.html

Meteoritical Bulletin Database
Last update: 28 Mar 2021
Meteorite Bulletin 109
https://www.lpi.usra.edu/meteor/metbull.php?code=72475

Barrat, J.A., Chaussidon, M., Yamaguchi, A., Beck, P., Villeneuve, J., Byrne, D.J., Broadley, M.W. and Marty, B., 2021. 
A 4,565-My-old andesite from an extinct chondritic protoplanet. 
Proceedings of the National Academy of Sciences, 118(11).