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Smith Nagihara, Susan; Casey, John F (2001): Whole-rock geochemistry of amphibolites and metagabbros from ODP Holes 173-1067A and 173-1068A. PANGAEA, https://doi.org/10.1594/PANGAEA.787862, Supplement to: Smith Nagihara, S; Casey, JF (2001): Whole-rock geochemistry of amphibolites and metagabbros from the west Iberia Margin, Leg 173. In: Beslier, M-O; Whitmarsh, RB; Wallace, PJ; Girardeau, J (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 173, 1-20, https://doi.org/10.2973/odp.proc.sr.173.011.2001

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Abstract:
The Leg 173 Site 1067 and 1068 amphibolites and metagabbros from the west Iberia margin exhibit variable whole-rock compositions from primitive to more evolved (Mg numbers = 49-71) that are generally incompatible trace and rare earth element enriched (light rare earth element [LREE] = 11-89 x chondrite). The Site 1067 amphibolites are compositionally similar to the basalts reported at Site 899 from this same region, based on trace and rare earth element contents. The Site 1068 amphibolites and metagabbros are similar to the Site 899 diabases but are more LREE enriched. However, the Sites 1067 and 1068 amphibolites and metagabbros are not compositionally similar to the Site 900 metagabbros, which are from the same structural high as the Leg 173 samples. The Leg 173 protoliths may be represented by basalts, diabases, and/or fine-grained gabbros that formed from incompatible trace element-enriched liquids.
Project(s):
Coverage:
Median Latitude: 40.682540 * Median Longitude: -11.603915 * South-bound Latitude: 40.682500 * West-bound Longitude: -11.612000 * North-bound Latitude: 40.682580 * East-bound Longitude: -11.595830
Date/Time Start: 1997-05-01T22:45:00 * Date/Time End: 1997-05-22T05:30:00
Size:
2 datasets

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