georefid:2013-046512SEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContact2013-07-08T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=10.1029/2010GC003449<gco:CharacterString>Thermal conductivities under high pressure in core samples from IODP NanTroSEIZE drilling site C0001</gco:CharacterString>2011-01-01publicationgeorefid:2013-046512doi:10.1029/2010GC003449Lin, WeirenJapan Agency for Marine-Earth Science and Technology, Kochi Institute for Core Sample Research, Nankoku, JapanauthorTadai, OsamuMarine Works Japan, JapanauthorHirose, TakehiroNational Institute of Industrial Science and Technology, JapanauthorTanikawa, WataruauthorTakahashi, ManabuauthorMukoyoshi, HidekiauthorKinoshita, MasatakaauthorAmerican Geophysical Union and The Geochemical Society, United StatespublisherdocumentDigitalGeochemistry, Geophysics, Geosystems - G (super 3)12We examined the effects of high pressure on thermal conductivity in core samples from the slope-apron facies and the upper part of the accretionary prism at site C0001 of the NanTroSEIZE drilling program and in other samples of five terrestrial rock types. Thermal conductivity clearly increased with increasing pressure for both wet (water saturated) and dry samples. We determined the rate of thermal conductivity change of the NanTroSEIZE sediments to be 0.014 Wm (super -1) K (super -1) /MPa when pressure was increased, and 0.01 Wm (super -1) K (super -1) /MPa when pressure was decreased. Using the rate determined for decreasing pressure, we estimated that thermal conductivities measured at atmospheric pressure rather than at in situ pressure may be underestimated by 7% for a core sample from around 1 km depth and by 20% for a core sample from around 3 km depth. In general, the rate of thermal conductivity change with pressure showed a positive correlation with porosity. However, the relationship of the rate of thermal conductivity change to porosity is also dependent on the fabric, mineral composition, and pore structure of the sediments and rocks. Furthermore, for two sandstones we tested, the effect of pressure on thermal conductivity for dry samples was greater than that for wet samples.completedOceanographyaccretionary wedgesboreholescoresdecollementheat flowhigh pressureinstrumentsIntegrated Ocean Drilling ProgramIODP Site C0001marine geologyNanTroSEIZENorth PacificNorthwest PacificPacific Oceanpressuresaturated materialssubduction zonestechniquesthermal conductivityWest Pacificurn:org.iodp:exp:314:site:C0001urnlargerWorkCitationstudyurn:org.iodp:exp:314urnlargerWorkCitationcampaignurn:org.iodp:exp:315:site:C0001urnlargerWorkCitationstudyurn:org.iodp:exp:315urnlargerWorkCitationcampaignEnglishgeoscientificInformation136.2000137.000032.500033.3000application/pdfunknownSEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContacthttp://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1525-2027/homepage/G3_Special_Section_Proposal_Form.pdfdownload