Calcium isotopic fractionation between clinopyroxene and orthopyroxene from mantle peridotites
نویسندگان
چکیده
Article history: Received 17 November 2009 Received in revised form 25 January 2010 Accepted 26 January 2010 Available online 23 February 2010 Editor: R.W. Carlson
منابع مشابه
Ultra-depleted, shallow cratonic mantle beneath West Greenland: dunitic xenoliths from Ubekendt Ejland
Dunitic xenoliths from late Palaeogene, alkaline basalt flows on Ubekendt Ejland, West Greenland contain olivine with 100 · Mg/(Mg + Fe), or Mg#, between 92.0 and 93.7. Orthopyroxene has very low Al2O3 and CaO contents (0.024–1.639 and 0.062–0.275 wt%, respectively). Spinel has 100 · Cr/ (Cr + Al), or Cr#, between 46.98 and 95.67. Clinopyroxene is absent. The osmium isotopic composition of oliv...
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