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- Zagami contains lithologic heterogeneity suggesting that it did not form in a homogeneous, thick lava flow . We have previously investigated the Sr and Nd isotopic systematics of Coarse-Grained (CG) and Fine-Grained (FG) lithologies described by . Both appear to belong to Normal Zagami (NZ) [1,3], but their initial Sr-isotopic compositions differ [4,5]. Here we report new analyses of the Dark Mottled Lithology (DML, ) that show its age and initial Sr and Nd isotopic compositions to be identical within error limits with those of CG, but Sr initial isotopic compositions differ from those of FG.
- Document ID: 20100023423.
73rd Annual Meeting of the Meteoritical Society; 26-30 Jun. 2010; New York, NY; United States.
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