Proc. IODP, 341, Data report: permeability, grain size, biogenic silica, and clay minerals of Expedition 341 sediments from Sites U1417 and U1418

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Chapter contents Abstract Introduction Methods Permeability tests Grain size analyses Silica analyses Clay mineral analyses Results Acknowledgments References Figures F1. Site locations. F2. Permeability test system. F3. X-ray diffraction analysis. F4. Shipboard porosity and permeability results, Site U1417. F5. Shipboard porosity and permeability results, Site U1418. Tables T1. Mineral mixtures for calibration of normalization factors. T2. Results from laboratory permeability tests and grain size analyses. T3. Results from amorphous silica analyses. T4. X-ray diffraction results for bulk mineral standard mixtures. T5. Normalization factors for X-ray diffraction of bulk mineral standard mixtures. T6. Bulk sediment X-ray diffraction results. T7. Clay-size fraction X-ray diffraction results. PDF file			Previous \| Next doi:10.2204/iodp.proc.341.202.2017 Data report: permeability, grain size, biogenic silica, and clay minerals of Expedition 341 sediments from Sites U1417 and U1418¹ Elizabeth J. Screaton,² Tania Villaseñor,² Stephanie R. James,² Lanie N. Meridth,² John M. Jaeger,²and William F. Kenney³ Abstract Eleven whole-round core samples from Integrated Ocean Drilling Program Expedition 341 Sites U1417 and U1418 were tested for vertical permeability. Subsamples of each core were taken and analyzed for grain size, biogenic silica content, and clay mineralogy. Measured vertical permeability varied from 1.8 × 10¹⁸ to 1.5 × 10¹⁶ m². With the exception of one sample from Site U1417, samples were dominated by clay-size (<4 μm) fractions with lesser silt-size (4–63 μm) and sand-size (>63 μm) fractions. Biogenic silica (SiO₂) content ranged from 2 to 15 wt% at Site U1417 and was consistently ~2 wt% in samples from Site U1418. Clay mineral abundance exceeded that of quartz, feldspar, and calcite in all samples. Smectite content ranged from 3 to 38 wt% in Site U1417 samples and from 0 to 3 wt% in Site U1418 samples. ¹ Screaton, E.J., Villaseñor, T., James, S.R., Meridth, L.N., Jaeger, J.M., and Kenney, W.F., 2017. Data report: permeability, grain size, biogenic silica, and clay minerals of Expedition 341 sediments from Sites U1417 and U1418. In Jaeger, J.M., Gulick, S.P.S., LeVay, L.J., and the Expedition 341 Scientists, Proceedings of the Integrated Ocean Drilling Program, 341: College Station, TX (Integrated Ocean Drilling Program). doi:10.2204/iodp.proc.341.202.2017 ² Department of Geological Sciences, University of Florida, Gainesville FL 32611, USA. Correspondence author. screaton@ufl.edu ³ Land Use and Environmental Change Institute, University of Florida, Gainesville FL 32611, USA. Initial receipt: 27 July 2016 Acceptance: 25 January 2017 Publication: 14 April 2017 MS 341-202 Top of page \| Previous \| Next