Menu
Skip to content
General
Uncategorized
Music
Family
Meta
Technology
Tidbits
Web Bookmarks
Games
Chris's Digital Detritus
Videotext for the twenty first century.
Erg Chech 002 Achondrite-ung | Meteorite Times Magazine
This is no ordinary meteorite, it’s the andesite crust of a dead protoplanet that predated Earth. At 4.565 byo, Erg Chech 002 is the oldest known magmatic rock. It’s composed primarily of sodic plagioclase, with pyroxene xenocrysts. : geology
→
•
←
A 4,565-My-old andesite from an extinct chondritic protoplanet | PNAS