georefid:2005-072228georefid:2005-072223SEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContact2011-06-23T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=10.2973/odp.proc.sr.191.005.2004<gco:CharacterString>Measured permeabilities of diatomaceous sediments and pelagic clay from the Northwest Pacific, ODP Site 1179</gco:CharacterString>2003-01-01publicationgeorefid:2005-072228doi:10.2973/odp.proc.sr.191.005.2004Kwon, OhmyoungTexas A&M University, Department of Geology and Geophysics, College Station, TX, United StatesauthorMobley, KarenUniversity of Tokyo, JapanauthorCarlson, Richard L.Japan Marine Science and Technology Center, JapanauthorTexas A&M University, Ocean Drilling Program, College Station, TX, United StatespublisherdocumentDigitalIn: Sager, William W., Kanazawa, Toshihiko, Escutia, Carlota, Araki, Eiichiro, Arney, James E., Carlson, Richard L., Downey, Warna S., Einaudi, Florence, Haggas, Sarah L., Hayasaka, Yasutaka, Hirata, Kenji, Horner-Johnson, Benjamin C., Mandernack, Kevin W., McCarthy, Francine M. G., Moberly, Ralph, Mochizuki, Masashi, Pedersen, Rikke Ohlenschlaeger, Salimullah, Ali R. M., Shinohara, Masanao, Werner, Carl-Dietrich, Proceedings of the Ocean Drilling Program; scientific results; Northwest Pacific Seismic Observatory and hammer drill tests; covering Leg 191 of the cruises of the drilling vessel JOIDES Resolution; Yokohama, Japan, to Apra Harbor, Guam; Sites 1179-1182; 16 July-8 September 2000191One of the objectives of drilling at Site 1179 was to search for microbes or biochemical evidence of microbial activity as part of the ongoing exploration of the depth and extent of the deep biosphere. The existence of living microbes has not been confirmed, but the chemistry of pore waters from the site, such as sulfate and ammonium profiles, is consistent with sulfate reduction and nitrification by anaerobic bacteria. However, chemical profiles are affected by the movement of molecules and ions through porous sediments by diffusion and advection. Permeability is thus an important consideration in the interpretation of pore water chemistry profiles. Moreover, diatomaceous sediments have some unique and, as yet, poorly understood physical properties. The purpose of this research is to measure hydraulic conductivity (permeability) in a suite of sediment samples from Ocean Drilling Program Site 1179 by the transient-pulse method. The sample set consists of four diatom ooze samples from Unit I, one radiolarian ooze sample from Unit II, and one pelagic clay sample from Unit III. The permeability of the clay is 1.92 mu d, whereas the permeabilities of the overlying radiolarian and diatom oozes range from 289 to 1604 mu d. Among these samples, permeability increases with porosity and grain size, in keeping with the results of previous studies.completedOceanographyalgaeclastic sedimentsclaydiatomsInvertebrataLeg 191marine sedimentsmathematical modelsNorth PacificNorthwest PacificOcean Drilling Programocean floorsODP Site 1179oozePacific Oceanpelagic environmentpermeabilityPlantaeProtistaRadiolariasedimentsWest Pacificurn:org.iodp:exp:191urnlargerWorkCitationcampaignurn:org.iodp:exp:191:site:1179urnlargerWorkCitationstudyurn:org.iodp:exp:191urnlargerWorkCitationcampaignEnglishgeoscientificInformation143.0000160.000012.000042.0000Available only on CD-ROM in PDF format and on the Web in PDF or HTMLapplication/pdfunknownSEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContacthttp://www-odp.tamu.edu/publications/191_SR/VOLUME/CHAPTERS/005.PDFdownload