Proc. IODP, 329, Data report: particle size distribution for IODP Expedition 329 sites in the South Pacific Gyre

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Chapter contents Abstract Introduction Methods Results Acknowledgments References Figures F1. Chlorophyll-a concentrations. F2. Downcore mean grain size, Site U1365. F3. Downcore mean grain size, Site U1366. F4. Downcore mean grain size, Site U1367. F5. Downcore mean grain size, Site U1368. F6. Downcore mean grain size, Site U1369. F7. Downcore mean grain size, Site U1370. F8. Downcore mean grain size, Site U1371. Tables T1. Particle size analysis results, Site U1365. T2. Particle size analysis results, Site U1366. T3. Particle size analysis results, Site U1367. T4. Particle size analysis results, Site U1368. T5. Particle size analysis results, Site U1369. T6. Particle size analysis results, Site U1370. T7. Particle size analysis results, Site U1371. PDF file			Previous \| Next doi:10.2204/iodp.proc.329.201.2014 Data report: particle size distribution for IODP Expedition 329 sites in the South Pacific Gyre¹ N. Dubois,^{2, 3} N.C. Mitchell,² and I.R. Hall⁴ Abstract We conducted particle size analyses on 208 samples from Integrated Ocean Drilling Program Expedition 329 in the South Pacific Gyre. Expedition 329 cored deep-sea sediment at seven sites along two transects in the center of the gyre. We analyzed the particle size distribution of sediment in the clay to silt size range (1.5–63 µm) at the seven drill sites using a Sedigraph particle size analyzer. Here we describe our laboratory procedure and present the overall results. The majority of samples are composed of clay-sized material, with some samples having >95 wt% of particles finer than 1.5 µm. However, a number of samples, in particular from sites located further offshore, show an extraordinarily well sorted particle size distribution. ¹ Dubois, N., Mitchell, N.C., and Hall, I.R., 2014. Data report: particle size distribution for IODP Expedition 329 sites in the South Pacific Gyre. In D’Hondt, S., Inagaki, F., Alvarez Zarikian, C.A., and the Expedition 329 Scientists, Proc. IODP, 329: Tokyo (Integrated Ocean Drilling Program Management International, Inc.). doi:10.2204/iodp.proc.329.201.2014 ² School of Earth, Atmospheric, and Environmental Sciences, The University of Manchester, Williamson Building (2.42), Oxford Road, Manchester M13 9PL, United Kingdom. Correspondence author: nathalie.dubois@eawag.ch ³ Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole MA 02543, USA. ⁴ School of Earth and Ocean Sciences, Cardiff University, Cardiff CF10 3YE, United Kingdom. Initial receipt: 14 August 2013 Acceptance: 6 February 2014 Publication: 9 April 2014 MS 329-201 Top of page \| Previous \| Next