georefid:2009-022887SEDIS Publication Catalogue

ana.macario@awi.de

http://sedis.iodp.org/pub-catalogue/informationpointOfContact2011-06-23T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=10. 2204/iodp.proc.304305.201.20092009-01-01publicationgeorefid:2009-022887doi:10. 2204/iodp.proc.304305.201.2009Halfpenny, AngelaAustralian National University, Research School of Earth Sciences, Canberra, A.C.T., AustraliaauthorPrior, DavidUniversite de Montpellier II, FranceauthorIODP Management International, Washington, DC, United StatespublisherdocumentHardcopyIn: Blackman, Donna, Ildefonse, Benoit, John, Barbara E., Ohara, Yasuhiko, Miller, D. Jay, MacLeod, Christopher J., Einaudi, Florence, Abratis, Michael W., Andal, Eric S., Andreani, Muriel, Awaji, Shunsaku, Charney, Allison, Christie, David, Drouin, Marion, Frost, Bryce R., Gee, Jeffrey S., Godard, Marguerite, Grimes, Craig B., Hayman, Nicholas W., Hirose, Takehiro, Hirth, James Gregory, Maeda, Jinichiro, McCaig, Andrew M., Morris, Antony, Nakagawa, Tatsunori, Searle, Roger C., von der Handt, Anette, Delius, Heike, Abe, Natsue, Beard, James S., Brunelli, Daniele, Delacour, Adelie G., Escartin, Javier, Fryer, Patricia B., Halfpenny, Angela, Hansen, Heidi-Elisabeth, Harris, Amber C., Hasebe, Akihiro Tamura, Hellebrand, Eric, Ishimaru, Satoko, Johnson, Kevin T. M., Karner, Garry D., Linek, Margaret, Mason, Olivia U., Michibayashi, Katsuyoshi, Nozaka, Toshio, Rosner, Martin, Suhr, Guenter, Tominaga, Masako, Yamasaki, Toru, Zhao, Xixi, Proceedings of the Integrated Ocean Drilling Program; oceanic core complex formation, Atlantis Massif; Expeditions 304 and 305 of the riserless drilling platform from and to Ponta Delgada, Azores (Portugal), Sites U1309-U1311, 17 November 2004-7 January 2005 and from and to Ponta Delgada, Azores (Portugal), Site U1309, 7 January-2 March 2005304-305Integrated Ocean Drilling Program Expedition 304/305 was designed to investigate the formation and evolution of oceanic core complexes by drilling through the Atlantis Massif oceanic core complex. Characterization of shear zone microstructures from the Atlantis Massif provides information about the area's deformation history and insight into the formation of oceanic core complexes. Plastic deformation was recognized in only 3% of the recovered core volume. The majority of the shear zones are located in gabbroic lithologies. Using orientation contrast imaging and electron backscatter diffraction, petrofabrics and microstructures were compared between the center and the edge of a gabbroic shear zone collected from IODP Hole U1309D. Analysis of the crystallographic preferred orientation, internal deformation, and grain size variations of feldspar was also performed.completedIgneous and metamorphic petrologyStructural geologyAtlantic OceanAtlantis Massifboreholescorescrustdeformationelectron diffraction dataExpedition 304faultsfeldspar groupfoliationframework silicatesgabbroic compositiongrain boundariesigneous rocksIntegrated Ocean Drilling ProgramIODP Site 1309metamorphic core complexesMid-Atlantic RidgeNorth Atlanticoceanic crustpetrofabricsplagioclaseplutonic rocksshear zonessilicatesstatistical analysisstructural analysisultrastructureurn:org.iodp:exp:304urnlargerWorkCitationcampaignurn:org.iodp:exp:304:site:U1309urnlargerWorkCitationstudyurn:org.iodp:exp:304urnlargerWorkCitationcampaignurn:org.iodp:exp:305:site:U1309urnlargerWorkCitationstudyurn:org.iodp:exp:305urnlargerWorkCitationcampaignEnglishgeoscientificInformation-42.0700-42.060030.100030.1100