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Age and Petrogenesis of Picritic Shergottite NWA1068: Sm-Nd and Rb-Sr Isotopic StudiesNWA 1068 is a 577g picritic shergottite found in the Moroccan Sahara in 2001. The meteorite resembles several other picritic shergottites, e.g. EETA79001B, DaG476, SaU005 and Dho019, in major-element chemistry and mineralogy, but it differs significantly from these meteorites in REE distribution pattern. It has a slightly LREE-depleted pattern commonly shared by some olivine-free basaltic shergottites, e.g. Shergotty, Zagami and Los Angeles, but not QUE94201. Detailed geochemical and mineral-petrological studies were given in. We performed Rb-Sr and Sm-Nd isotopic analyses on this rock to determine its crystallization age and to study the petrogenetic relationship between this meteorite and other basaltic and pricritic shergottites.
Document ID
Acquisition Source
Document Type
Conference Paper
Shih, C.-Y.
(Lockheed Martin Space Operations Houston, TX, United States)
Nyquist, L. E.
(NASA Johnson Space Center Houston, TX, United States)
Wiesmann, H.
(NASA Johnson Space Center Houston, TX, United States)
Barrat, J. A.
(Angers Univ. France)
Date Acquired
August 21, 2013
Publication Date
January 1, 2003
Publication Information
Publication: Lunar and Planetary Science XXXIV
Subject Category
Lunar And Planetary Science And Exploration
Distribution Limits
Public Use Permitted.
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