Data report; Permeability, porosity, and frictional strength of core samples from IODP Expedition 366 in the Mariana Forearc

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doi: 10.14379/iodp.pro.366.202.2019
Author(s): Morrow, C. A.; Moore, D. E.; Lockner, D. A.; Bekins, B. A.
International Ocean Discovery Program, Expedition 366 Participants, College Station, TX
Author Affiliation(s): Primary:
U. S. Geological Survey, United States
Volume Title: Proceedings of the International Ocean Discovery Program; Mariana convergent margin and South Chamorro Seamount; Expedition 366 of the riserless drilling platform, Guam to Hong Kong; Sites 1200 and U1491-U1498, 8 December 2016-7 February 2017
Volume Author(s): Fryer, Patricia; Wheat, C. Geoffrey; Williams, Trevor; Albers, Elmar; Bekins, Barbara; Debret, Baptiste P. R.; Deng Jianghong; Dong Yanhui; Eickenbusch, Philip; Frery, Emanuelle A.; Ichiyama, Yuji; Johnson, Kevin; Johnston, Raymond M.; Kevorkian, Richard T.; Kurz, Walter; Magalhaes, Vitor; Mantovanelli, Simone S.; Menapace, Walter; Menzies, Catriona D.; Michibayashi, Katsuyoshi; Moyer, Craig L.; Mullane, Kelli K.; Park, Jung-Woo; Price, Roy E.; Ryan, Jeffrey G.; Shervais, John W.; Suzuki, Shino; Sissmann, Olivier J.; Takai, Ken; Walter, Bastien; Zhang Rui
Source: Proceedings of the International Ocean Discovery Program; Mariana convergent margin and South Chamorro Seamount; Expedition 366 of the riserless drilling platform, Guam to Hong Kong; Sites 1200 and U1491-U1498, 8 December 2016-7 February 2017, Patricia Fryer, C. Geoffrey Wheat, Trevor Williams, Elmar Albers, Barbara Bekins, Baptiste P. R. Debret, Deng Jianghong, Dong Yanhui, Philip Eickenbusch, Emanuelle A. Frery, Yuji Ichiyama, Kevin Johnson, Raymond M. Johnston, Richard T. Kevorkian, Walter Kurz, Vitor Magalhaes, Simone S. Mantovanelli, Walter Menapace, Catriona D. Menzies, Katsuyoshi Michibayashi, Craig L. Moyer, Kelli K. Mullane, Jung-Woo Park, Roy E. Price, Jeffrey G. Ryan, John W. Shervais, Shino Suzuki, Olivier J. Sissmann, Ken Takai, Bastien Walter and Zhang Rui; International Ocean Discovery Program, Expedition 366 Participants, College Station, TX. Proceedings of the International Ocean Discovery Program, Expedition Reports, Vol.366, 14p. Publisher: International Ocean Discovery Program, Washington, DC, United States. ISSN: 2377-3189 CODEN: IDSDA6
Note: In English. Includes appendices. 28 refs.; illus., incl. 2 tables, sketch map
Summary: Core samples from International Ocean Discovery Program (IODP) Expedition 366 were tested in the laboratory to determine permeability, porosity, density, and frictional strength and their relation to mineralogy as part of an effort to understand hydromechanical processes at convergent plate margins. Seven samples were tested from a depth range of 19.6 to 197.9 m below seafloor. The samples were derived from three serpentinite mud volcanoes in the Mariana forearc region that formed where slab-derived fluids and materials ascend along faults. The physical characteristics mirror compositional differences between predominantly serpentine-rich and saponite-rich samples. Permeability values ranged from 10-17 to 10-19 m2, low enough to facilitate the formation of high fluid pressures that have been observed in the Mariana and other subduction megathrust environments. Porosity ranged from 0.37 to 0.51 and density ranged from 1.66 to 2.01 g/cm3 . Serpentine-rich samples have coefficients of friction of 0.2-0.4, consistent with crustal serpentinite from a variety of fault zones, whereas saponite-rich samples have friction values less than 0.2, consistent with saponite fault gouge from the San Andreas Fault Observatory at Depth (SAFOD) drill hole in California (USA).
Year of Publication: 2019
Research Program: IODP Integrated Ocean Drilling Program
IODP2 International Ocean Discovery Program
Key Words: 05 Petrology, Igneous and Metamorphic; Clay minerals; Cores; Density; Expedition 366; Experimental studies; Friction; IODP Site U1492; IODP Site U1496; IODP Site U1497; IODP Site U1498; International Ocean Discovery Program; Laboratory studies; Mariana Trench; Marine sediments; Metaigneous rocks; Metamorphic rocks; Metasomatic rocks; Mineral assemblages; Mud volcanoes; North Pacific; Northwest Pacific; Pacific Ocean; Permeability; Physical properties; Porosity; Saponite; Sediments; Serpentine; Serpentine group; Serpentinite; Sheet silicates; Silicates; Strength; West Pacific
Coordinates: N154236 N154236 E1471036 E1471036
N180636 N180636 E1470606 E1470606
N163215 N163215 E1471316 E1471316
N162714 N162714 E1470959 E1470959
Record ID: 2019052562
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute.