Publication Date:
2019-07-13
Description:
Two thermally-metamorphosed ordinary chondrite regolith breccias, Monahans 1998 (H5) and Zag (H3-6) contain fluid inclusion-bearing halite (NaCl) crystals, dated by K-Ar, Rb-Sr and I-Xe systematics to be approx. 4.5 billion years old. Heating/freezing studies of the aqueous fluid inclusions demonstrated that they were trapped near 25 C, and their continued presence in the halite grains requires that their incorporation into the H chondrite asteroid was post metamorphism.
Keywords:
Geophysics
Type:
JSC-CN-28791
,
2013 Meteoritical Society Meeting; Jul 29, 2013 - Aug 02, 2013; Edmonton; Canada
Format:
application/pdf