The Importance of When

1
The Importance of When
Two important age studies of Martian meteorites
Baddeleyites in shergottite NWA 5298
Evolved, alkalic clasts in Black Beauty sample
NWA 7533 indicate an early age for crust
formation on Mars. Ages of baddeleyite crystals
in NWA 5298 indicate that shergottites are young.
Clasts in Black Beauty impact melt breccia
2
Ancient Clasts in Black Beauty
3
Shergottite Age Conundrum
Pb isotopic data indicate old ages for Martian
meteorites, including shergottites.
But internal isochrons suggest young ages for
shergottites.
4
Baddeleyite Data Suggest Shergottites Are Young