Rb-Sr, Sm-Nd and Ar-Ar isotopic systematics of Antarctic nakhlite Yamato 000593

• Main Authors: Misawa,Keiji, Shih,Chi-Yu, Wiesmann,Henry, Garrison,Daniel H., Nyquist,Laurence E., Bogard,Donald D.
• Format: Report
• Language: English
• Published: Antarctic Meteorite Research Center, National Institute of Polar Research/Mail Code C23, Lockheed-Martin Space Operations/Mail Code C23, Lockheed-Martin Space Operations/Mail Code C23, Lockheed-Martin Space Operations/Mail Code SR, NASA Johnson Space Center/Mail Code SR, NASA Johnson Space Center 2005
• Subjects: Yamato 000593; nakhlite; Ar-Ar; Rb-Sr; Sm-Nd; chronology; crystallization; aqueous alteration; source material; Antarctic; Yamato; Antarc*
• Online Access: https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=6069; http://id.nii.ac.jp/1291/00006069/; https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=6069&item_no=1&attribute_id=18&file_no=1

sotopic analysis of the newly found Antarctic nakhlite Yamato (Y) 000593 yields a Rb-Sr age of 1.30±0.02Ga with an initial ^(87)Sr/^(86)Sr of 0.702525±0.000027, a Sm-Nd age of 1.31±0.03Ga with an initial ε_(Nd) of + 16.0±0.2 and an Ar-Ar isochron age of <=1.36Ga. The concordancy of these three ag...