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Moll, Melanie; Paulick, Holger; Suhr, G; Bach, Wolfgang (2007): Geochemistry of primary and secondary mineral phases in ODP Leg 209 sediments. PANGAEA, https://doi.org/10.1594/PANGAEA.776381, Supplement to: Moll, M et al. (2007): Data report: Microprobe analyses of primary phases (olivine, pyroxene, and spinel) and alteration products (serpentine, iowaite, talc, magnetite, and sulfides) in Holes 1268A, 1272A, and 1274A. In: Kelemen, PB; Kikawa, E; Miller; DJ (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 209, 1-13, https://doi.org/10.2973/odp.proc.sr.209.003.2007

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Abstract:
Primary and secondary mineral phases from Holes 1268A (11 samples), 1272A (9 samples), and 1274A (12 samples) were analyzed by electron microprobe in Bonn and Cologne (Germany). Bulk rock powders of these samples were also analyzed geochemically, including major and trace elements (Paulick et al., 2006, doi:10.1016/j.chemgeo.2006.04.011). Ocean Drilling Program (ODP) Leg 209 Holes 1268A, 1272A, and 1274A differ remarkably in alteration intensity and mineralogy, and details regarding their lithologic characteristics are presented in Bach et al. (2004, doi:10.1029/2004GC000744) and Shipboard Scientific Party (2004, doi:10.2973/odp.proc.ir.209.101.2004). Because of the least altered character of peridotite in Hole 1274A, abundant clinopyroxene, orthopyroxene, olivine, and spinel were analyzed at this site. In Hole 1272A, primary silicates are rare and analyses were restricted to some samples that contain traces of olivine and orthopyroxene. Because of the intensity of alteration, Hole 1268A is devoid of primary phases except spinel. Commonly, alteration is pseudomorphic and serpentinization of olivine and orthopyroxene can be distinguished. Accordingly, compositional variations of the alteration minerals with regard to the precursor minerals are one of the issues investigated in this data report.
Project(s):
Coverage:
Median Latitude: 15.196040 * Median Longitude: -45.575123 * South-bound Latitude: 14.845910 * West-bound Longitude: -46.676360 * North-bound Latitude: 15.647780 * East-bound Longitude: -44.971660
Date/Time Start: 2003-05-22T05:45:00 * Date/Time End: 2003-06-18T21:45:00
Event(s):
209-1268A * Latitude: 14.845910 * Longitude: -45.077350 * Date/Time Start: 2003-05-22T05:45:00 * Date/Time End: 2003-05-26T19:30:00 * Elevation: -3007.0 m * Penetration: 147.6 m * Recovery: 78.69 m * Location: North Atlantic Ocean * Campaign: Leg209 * Basis: Joides Resolution * Device: Drilling/drill rig (DRILL) * Comment: 29 cores; 147.6 m cored; 0 m drilled; 53.3 % recovery
209-1272A * Latitude: 15.094430 * Longitude: -44.971660 * Date/Time Start: 2003-06-07T07:45:00 * Date/Time End: 2003-06-12T07:30:00 * Elevation: -2559.8 m * Penetration: 131 m * Recovery: 37.5 m * Location: North Atlantic Ocean * Campaign: Leg209 * Basis: Joides Resolution * Device: Drilling/drill rig (DRILL) * Comment: 27 cores; 131 m cored; 0 m drilled; 28.6 % recovery
209-1274A * Latitude: 15.647780 * Longitude: -46.676360 * Date/Time Start: 2003-06-15T00:30:00 * Date/Time End: 2003-06-18T21:45:00 * Elevation: -3939.8 m * Penetration: 155.8 m * Recovery: 34.65 m * Location: North Atlantic Ocean * Campaign: Leg209 * Basis: Joides Resolution * Device: Drilling/drill rig (DRILL) * Comment: 28 cores; 155.8 m cored; 0 m drilled; 22.2 % recovery
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