Refined method for calculating percentages of kaolinite and chlorite from X-ray diffraction data, with application to the Nankai Margin of southwest Japan

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doi: 10.2204/iodp.proc.314315316.201.2011
Author(s): Guo, Junhua; Underwood, Michael B.
Integrated Ocean Drilling Program, Expedition 314 Scientists, College Station, TX
Author Affiliation(s): Primary:
University of Missouri, Department of Geological Sciences, Columbia, MO, United States
Other:
University of Wisconsin, Madison, United States
Ecole National Supéieure de Géologie, France
Chungnam National University, South Korea
CEREGE-College de France, France
University of Texas at Austin, United States
CSIC Barcelona Institute of Earth Sciences, Spain
University of Southampton, United Kingdom
Kyoto University, Japan
University of California, Santa Curz, United States
University of Tokyo, Japan
Rice University, United States
University of Leicester, United Kingdom
Université de Cergy-Pontoise, France
Leibniz Institute of Marine Sciences, Germany
Bremen University, Germany
University of Connecticut, United States
University of Aberdeen, United Kingdom
Université de la Reunion, France
University of Missouri, United States
Kochi University, Japan
Shimane University, Japan
Osaka University, Japan
Hawaii Institute of Geophysics and Planetology, United States
Tampere University of Technology, Finland
Chiba University, Japan
Indiana University of Pennsylvania, United States
University of Michigan, United States
Hokkaido University, Japan
Kitami Institute of Technology, Japan
Woods Hole Oceanographic Institution, United States
University of Florida, United States
Texas A&M University, United States
University of Franche-Comte, France
University of Wollongong, Australia
ETH Zurich, Switzerland
Brown University, United States
Oregon State University, United States
Tongji University, China
Stockholm University, Sweden
Max Planck Institute for Marine Microbiology, Germany
Scripps Institution of Oceanography, United States
China University of Geosciences, China
Volume Title: Proceedings of the Integrated Ocean Drilling Program NanTroSEIZE Stage 1; investigations of seismogenesis, Nankai Trough, Japan; Expeditions 314, 315, and 316 of the riser drilling platform from and to Shingu, Japan; Sites C0001-C0006, 21 September-15 November 2007; and Sites C0001 and C0002, 16 November-18 December 2007; and Sites C0004 and C0006-C0008, 19 December 2007-5 February 2008
Volume Author(s): Kinoshita, Masataka; Tobin, Harold; Thu, Moe Kyaw; Gaillot, Philippe; Bourlange, Sylvain; Chang, Chandong; Conin, Marianne; Gulick, Sean; Rodriguez, Maria José Jurado; Martin, Kylara M.; McNeill, Lisa; Miyakawa, Ayumu; Moore, J. Casey; Nakamura, Yasuyuki; Saito, Saneatsu; Sawyer, Dale S.; Tudge, Joanne; Yamada, Yasuhiro; Ashi, Juichiro; Lallemant, Siegfried; Masago, Hideki; Behrmann, Jan H.; Boeckel, Babette; Byrne, Timothy; Calves, Gerome; Famin, Vincent; Guo, Junhua; Hashimoto, Yoshitaka; Hayashi, Hiroki; Henry, Pierre; Hirono, Tetsuro; Hulme, Samuel M.; Kaksonen, Anna Henriikka; Kanagawa, Kyuichi; Kanamatsu, Toshiya; Kopf, Achim; Lewis, Jonathan C.; Likos, William John; Pares, Josep Maria; Saito, Hiroyuki; Schmidt-Schierhorn, Friederike; Tomaru, Hitoshi; Underwood, Michael B.; Zhu, Wen-Lu; Kimura, Gaku; Screaton, Elizabeth J.; Curewitz, Daniel; Chester, Frederick; Fabbri, Olivier; Fergusson, Chris; Girault, France E.; Goldsby, David; Harris, Robert; Inagaki, Fumio; Jiang, Tao; Kitamura, Yujin; Knuth, Matt; Li Chunfeng; Liljedahl, Lillemor Claesson; Louis, Laurent; Milliken, Kitty; Nicholson, Uisdean; Riedinger, Natascha; Sakaguchi, Arito; Solomon, Evan; Strasser, Michael; Su Xin; Tsutsumi, Akito; Ujiie, Kohtaro; Yamaguchi, Asuka; Xixi, Zhao
Source: Proceedings of the Integrated Ocean Drilling Program NanTroSEIZE Stage 1; investigations of seismogenesis, Nankai Trough, Japan; Expeditions 314, 315, and 316 of the riser drilling platform from and to Shingu, Japan; Sites C0001-C0006, 21 September-15 November 2007; and Sites C0001 and C0002, 16 November-18 December 2007; and Sites C0004 and C0006-C0008, 19 December 2007-5 February 2008, Masataka Kinoshita, Harold Tobin, Moe Kyaw Thu, Philippe Gaillot, Sylvain Bourlange, Chandong Chang, Marianne Conin, Sean Gulick, Maria José Jurado Rodriguez, Kylara M. Martin, Lisa McNeill, Ayumu Miyakawa, J. Casey Moore, Yasuyuki Nakamura, Saneatsu Saito, Dale S. Sawyer, Joanne Tudge, Yasuhiro Yamada, Juichiro Ashi, Siegfried Lallemant, Hideki Masago, Jan H. Behrmann, Babette Boeckel, Timothy Byrne, Gerome Calves, Vincent Famin, Junhua Guo, Yoshitaka Hashimoto, Hiroki Hayashi, Pierre Henry, Tetsuro Hirono, Samuel M. Hulme, Anna Henriikka Kaksonen, Kyuichi Kanagawa, Toshiya Kanamatsu, Achim Kopf, Jonathan C. Lewis, William John Likos, Josep Maria Pares, Hiroyuki Saito, Friederike Schmidt-Schierhorn, Hitoshi Tomaru, Michael B. Underwood, Wen-Lu Zhu, Gaku Kimura, Elizabeth J. Screaton, Daniel Curewitz, Frederick Chester, Olivier Fabbri, Chris Fergusson, France E. Girault, David Goldsby, Robert Harris, Fumio Inagaki, Tao Jiang, Yujin Kitamura, Matt Knuth, Li Chunfeng, Lillemor Claesson Liljedahl, Laurent Louis, Kitty Milliken, Uisdean Nicholson, Natascha Riedinger, Arito Sakaguchi, Evan Solomon, Michael Strasser, Su Xin, Akito Tsutsumi, Kohtaro Ujiie, Asuka Yamaguchi and Zhao Xixi; Integrated Ocean Drilling Program, Expedition 314 Scientists, College Station, TX; Integrated Ocean Drilling Program, Expedition 315 Scientists; Integrated Ocean Drilling Program, Expedition 316 Scientists. Proceedings of the Integrated Ocean Drilling Program, Vol.314/315/316, 14p. Publisher: IODP Management International, Washington, DC, United States. ISSN: 1930-1014
Note: In English. 29 refs.; illus., incl. 2 tables
Summary: Calculating accurate percentages of kaolinite and chlorite in marine sediments using X-ray diffraction (XRD) data is challenging because the minerals have similar d-values. Most approaches use a peak-intensity ratio or fitted-peak-area ratio and assume a linear fit between the ratio and the concentration of each mineral. To test this assumption, we mixed various proportions of kaolinite and chlorite standards and calculated each mineral's individual peak area (PA) at ∼3.5 Å along with the total area (TA) of the composite peak. A power function provides the best correlation coefficient for regression curves of the ratio of PA/TA versus the actual mineral concentration (weight percent). The average error using a doubled half-peak area approach is 2.6%. We tested the utility of the method by analyzing data from natural mudstone specimens from Ocean Drilling Program Sites 1177 and 1178 (central and western Nankai Trough). This documentation of temporal changes in concentrations of chlorite and kaolinite provides a basis for improved XRD analyses and interpretations of sediment provenance during the Integrated Ocean Drilling Program's Nankai Trough Seismogenic Zone Experiment.
Year of Publication: 2011
Research Program: ODP Ocean Drilling Program
Key Words: 02 Geochemistry; Asia; Boreholes; Chlorite; Chlorite group; Clastic rocks; Clay minerals; Concentration; Continental margin; Cores; Diffractograms; Experimental studies; Far East; Honshu; Japan; Kaolinite; Kii Peninsula; Laboratory studies; Leg 190; Methods; Mudstone; Nankai Trough; North Pacific; Northwest Pacific; ODP Site 1177; ODP Site 1178; Ocean Drilling Program; Pacific Ocean; Sedimentary rocks; Sheet silicates; Shikoku Basin; Silicates; West Pacific; X-ray diffraction data
Coordinates: N313900 N314000 E1340100 E1340000
N324300 N324400 E1342900 E1342800
Record ID: 2012011234
Copyright Information: GeoRef, Copyright 2017 American Geosciences Institute.