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doi:10.2204/iodp.proc.311.201.2008

Data report: bulk mineralogical composition of Cascadia margin sediments, IODP Expedition 311¹

André Bahr,² Gerhard Bohrmann,² and Barbara M.A. Teichert³

Abstract

The bulk mineralogical compositions of sediment samples from Sites U1325–U1329, northern Cascadia margin, were determined by X-ray diffraction analyses. The results document a highly variable mineralogy dominated by detrital components, mainly quartz, feldspar, mica, and clay minerals. Carbonate minerals are present only in minor amounts (<5 wt%). The long-term variations in the relative abundance of each mineral correspond to the particular lithostratigraphic units.

¹Bahr, A., Bohrmann, G., and Teichert, B.M.A., 2008. Data report: bulk mineralogical composition of Cascadia margin sediments, IODP Expedition 311. In Riedel, M., Collett, T.S., Malone, M.J., and the Expedition 311 Scientists, Proc. IODP, 311: Washington, DC (Integrated Ocean Drilling Program Management International, Inc.). doi:10.2204/iodp.proc.311.201.2008

²Forschungszentrum Ozeanränder, Universität Bremen, Postfach 330440, D-28334 Bremen, Germany. bahr@uni-bremen.de

³Bundesanstalt für Geowissenschaften und Rohstoffe, Stilleweg 2, D-30655 Hannover, Germany.

Initial receipt: 31 May 2007
Acceptance: 23 October 2007
Publication: 5 February 2008
MS 311-201

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