Data report; Major and trace element and Sr-Nd-Pb isotope analyses for basement rocks from the CRISP-A transect drilled during expeditions 334 and 344

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doi: 10.2204/iodp.proc.344.205.2016
Author(s): Yan Quanshu; Shi Xuefa
Integrated Ocean Drilling Program, Expedition 344 Scientists, College Station, TX
Author Affiliation(s): Primary:
State Oceanic Administration, First Institute of Oceanography, Qingdao, China
Other:
Japan Agency for Marine-Earth Science and Technology, Japan
Integrated Ocean Drilling Program, United States
Lamont-Doherty Earth Observatory, United States
University of New England, Australia
University of Washington, United States
Indiana State University, United States
Université de Franche-Comté, France
Korea Institute of Geoscience and Mineral Resources, South Korea
University of Vigo, Spain
University of Tokyo, Japan
Kochi University, Japan
GEOMAR-Helmholtz Centre for Ocean Research Kiel, Germany
Universidade de Sao Paulo, Brazil
Scripps Indtituion of Oceanography, United States
University of Graz, Austria
Nanjing University, China
Naval Research Laboratory, United States
Ohio State University, United States
Universidade Federal do Rio de Janeiro, Brazil
Université de Lausanne, Switzerland
University of Florida, United States
University of Southampton, United Kingdom
Kumamoto University, Japan
State Oceanic Adminstration, China
University of California-Santa Cruz, United States
Volume Title: Proceedings of the Integrated Ocean Drilling Program; Costa Rica Seismogenesis Project, Program A Stage 2 (CRISP-A2); Expedition 344 of the riserless drilling platform, Balboa, Panama, to Puntarenas, Costa Rica; Sites U1380, U1381, and U1412-U1414, 23 October-11 December 2012
Volume Author(s): Harris, Robert N.; Sakaguchi, Arito; Petronotis, Katerina; Malinverno, Alberto; Baxter, Alan T.; Berg, Richard; Burkett, Ashley; Charpentier, Delphine; Choi, Jiyoung; Diz Ferreiro, Paula; Hamahashi, Mari; Hashimoto, Yoshitaka; Heydolph, Ken; Jovane, Luigi; Kastner, Miriam; Kurz, Walter; Kutterolf, Steffen O.; Li Yongxiang; Martin, Kylara M.; Millan, Cristina; Nascimento, Debora B.; Saito, Saneatsu; Sandoval Gutierrez, Maria I.; Screaton, Elizabeth J.; Smith-Duque, Christopher E.; Solomon, Evan A.; Straub, Susanne M.; Tanikawa, Wataru; Torres, Marta E.; Uchimura, Hitomi; Vannucchi, Paola; Yamamoto, Yuzuru; Yan Quanshu; Zhao, Xixi
Source: Proceedings of the Integrated Ocean Drilling Program; Costa Rica Seismogenesis Project, Program A Stage 2 (CRISP-A2); Expedition 344 of the riserless drilling platform, Balboa, Panama, to Puntarenas, Costa Rica; Sites U1380, U1381, and U1412-U1414, 23 October-11 December 2012, Robert N. Harris, Arito Sakaguchi, Katerina Petronotis, Alberto Malinverno, Alan T. Baxter, Richard Berg, Ashley Burkett, Delphine Charpentier, Jiyoung Choi, Paula Diz Ferreiro, Mari Hamahashi, Yoshitaka Hashimoto, Ken Heydolph, Luigi Jovane, Miriam Kastner, Walter Kurz, Steffen O. Kutterolf, Li Yongxiang, Kylara M. Martin, Cristina Millan, Debora B. Nascimento, Saneatsu Saito, Maria I. Sandoval Gutierrez, Elizabeth J. Screaton, Christopher E. Smith-Duque, Evan A. Solomon, Susanne M. Straub, Wataru Tanikawa, Marta E. Torres, Hitomi Uchimura, Paola Vannucchi, Yuzuru Yamamoto, Yan Quanshu and Xixi Zhao; Integrated Ocean Drilling Program, Expedition 344 Scientists, College Station, TX. Proceedings of the Integrated Ocean Drilling Program, Vol.344, 14p. Publisher: International Ocean Discovery Program, Washington, DC, United States. ISSN: 1930-1014 CODEN: IDSDA6
Note: In English. 19 refs.; illus., incl. 3 tables, geol. sketch map
Summary: We report major and trace element and Sr-Nd-Pb isotope compositions of basement rocks recovered during Integrated Ocean Drilling Program (IODP) Expeditions 334 and 344 (Costa Rica Seismogenesis Project [CRISP]). The major element oxide SiO2 was analyzed by X-ray fluorescence; all other major and trace element concentrations were determined by inductively coupled plasma-optical emission spectrometry and inductively coupled plasma-mass spectrometry, respectively. Sr, Nd, and Pb isotope ratios were analyzed by multicollector inductively coupled plasma-mass spectrometry. SiO2 was measured at the Number 4 Exploration Institute of Geology and Mineral Resources of Shandong Province (China), and all other analytical work was carried out at Key Laboratory of Marine Sedimentary and Environmental Geology, State Oceanic Administration (China). The analyzed samples are all tholeiitic basalts that are enriched in light rare earth elements with no Eu anomalies. Most basement samples from Expedition 334 Site U1381 and Expedition 344 Site U1414 resemble enriched mid-ocean-ridge basalt. In addition, a few Hole U1414A basement samples show a positive Pb anomaly. Radiogenic isotopic (Sr, Nd, and Pb) compositions are similar to previous studies, reflecting the complexity of mantle sources and tectonic evolution of the Cocos Ridge. The trace element and Sr-Nd-Pb isotopic compositions for the recovered rocks may be further used to explain the relationship between subduction input and arc output in the subduction factory, such as the nature and role of subducted components, element cycling during subduction processing, and mantle geochemistry.
Year of Publication: 2016
Research Program: IODP Integrated Ocean Drilling Program
Key Words: 02 Geochemistry; 05 Petrology, Igneous and Metamorphic; Alkaline earth metals; Basalts; Basement; Boreholes; Concentration; Cores; Costa Rica Seismogenesis Project; East Pacific; Expedition 334; Expedition 344; Geochemistry; IODP Site U1381; IODP Site U1414; Igneous rocks; Integrated Ocean Drilling Program; Isotope ratios; Isotopes; Lead; Major elements; Metals; Nd-144/Nd-143; Neodymium; North Pacific; Northeast Pacific; Pacific Ocean; Pb-206/Pb-204; Pb-207/Pb-204; Pb-208/Pb-204; Radioactive isotopes; Rare earths; Sr-87/Sr-86; Stable isotopes; Strontium; Tholeiitic basalt; Trace elements; Volcanic rocks
Coordinates: N082543 N082543 W0840928 W0840929
N083014 N083014 W0841332 W0841332
Record ID: 2016025648
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