Data report; An electron backscatter diffraction study of a gabbroic shear zone, IODP Expedition 304/305

Online Access: Get full text
doi: 10. 2204/iodp.proc.304305.201.2009
Author(s): Halfpenny, Angela; Prior, David
Integrated Ocean Drilling Program, Expedition 304 Scientists
Author Affiliation(s): Primary:
Australian National University, Research School of Earth Sciences, Canberra, A.C.T., Australia
Université de Montpellier II, France
University of Wyoming, United States
Hydrographic and Oceanographic Department of Japan, Japan
Integrated Ocean Drilling Program, United States
Cardiff University, United Kingdom
University of Jena, Federal Republic of Germany
Kanazawa University, Japan
Institut de Physique du Globe de Paris, France
University of Tokyo, Japan
University of Connecticut, United States
Oregon State University, United States
Duke University, United States
Kyoto University, Japan
Woods Hole Oceanographic Institution, United States
Hokkaido University, Japan
University of Leeds, United Kingdom
University of Plymouth, United Kingdom
Tohoku University, Japan
University of Durham, United Kingdom
Max-Planck Institut für Chemie, Federal Republic of Germany
University of Leicester, United Kingdom
Japan Marine Science and Technology Center, Japan
Virginia Museum of Natural History, United States
Laboratoire Pierre Süe-DRECAM, France
Eidgenössische Technische Hochschule Zürich-Zentrum, Switzerland
Université Pierre et Marie Curie, France
University of Hawaii at Manoa, United States
University of Liverpool, United Kingdom
University of Bergen, Norway
University of Rhode Island, United States
University of Hawaii and Manoa, United States
Lamont-Doherty Earth Observatory, United States
Rheinisch-Westfälische Technische Hochschule Aachen, Federal Republic of Germany
Shizuoka University, Japan
Okayama University, Japan
Universität Köln, Federal Republic of Germany
University of California-Santa Cruz, United States
Volume Title: 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 2005
Volume Author(s): 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, Adélie 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
Source: 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 2005, Donna Blackman, Benoit Ildefonse, Barbara E. John, Yasuhiko Ohara, D. Jay Miller, Christopher J. MacLeod, Florence Einaudi, Michael W. Abratis, Eric S. Andal, Muriel Andreani, Shunsaku Awaji, Allison Charney, David Christie, Marion Drouin, Bryce R. Frost, Jeffrey S. Gee, Marguerite Godard, Craig B. Grimes, Nicholas W. Hayman, Takehiro Hirose, James Gregory Hirth, Jinichiro Maeda, Andrew M. McCaig, Antony Morris, Tatsunori Nakagawa, Roger C. Searle, Anette von der Handt, Heike Delius, Natsue Abe, James S. Beard, Daniele Brunelli, Adélie G. Delacour, Javier Escartin, Patricia B. Fryer, Angela Halfpenny, Heidi-Elisabeth Hansen, Amber C. Harris, Akihiro Tamura Hasebe, Eric Hellebrand, Satoko Ishimaru, Kevin T. M. Johnson, Garry D. Karner, Margaret Linek, Olivia U. Mason, Katsuyoshi Michibayashi, Toshio Nozaka, Martin Rosner, Guenter Suhr, Masako Tominaga, Toru Yamasaki and Xixi Zhao; Integrated Ocean Drilling Program, Expedition 304 Scientists; Integrated Ocean Drilling Program, Expedition 305 Scientists. Proceedings of the Integrated Ocean Drilling Program, Vol.304-305. Publisher: IODP Management International, Washington, DC, United States. ISSN: 1930-1014
Note: In English. 13 refs.; illus., incl. 1 table
Summary: Integrated 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.
Year of Publication: 2009
Research Program: IODP Integrated Ocean Drilling Program
Key Words: 05 Petrology, Igneous and Metamorphic; 16 Structural Geology; Atlantic Ocean; Atlantis Massif; Boreholes; Cores; Crust; Deformation; Electron diffraction data; Expedition 304; Faults; Feldspar group; Foliation; Framework silicates; Gabbroic composition; Grain boundaries; IODP Site U1309; Igneous rocks; Integrated Ocean Drilling Program; Metamorphic core complexes; Microstructure; Mid-Atlantic Ridge; North Atlantic; Oceanic crust; Petrofabrics; Plagioclase; Plutonic rocks; Shear zones; Silicates; Statistical analysis; Structural analysis
Coordinates: N301000 N301100 W0420600 W0420700
Record ID: 2009022887
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute.