Yamamoto, Yuhji (2013): Data report; Temporal variation in natural remanent magnetization observed for Pacific Plate basement rocks; compilation from legacy data and new paleomagnetism and rock magnetism data from seafloor basalts cored during Expedition 320/321

Leg/Site/Hole:
IODP 320
Identifier:
2013-023714
georefid
10.2204/iodp.proc.320321.213.2013
doi
Creator:
Yamamoto, Yuhji
Kochi University, Center for Advanced Marine Core Research, Kochi, Japan
author
Identification:
Data report; Temporal variation in natural remanent magnetization observed for Pacific Plate basement rocks; compilation from legacy data and new paleomagnetism and rock magnetism data from seafloor basalts cored during Expedition 320/321
2013
In: Palike, Heiko, Nishi, Hiroshi, Klaus, Adam, Evans, Helen, Williams, Trevor, Acton, Gary D., Bown, Paul, Delaney, Margaret, Dunkley Jones, Tom, Edgar, Kirsty, Fitch, Peter, Gussone, Nikolaus, Herrle, Jens, Hyeong, Kiseong, Kamikuri, Shin-ichi, Kuroda, Junichiro, Leon-Rodriguez, Lizette, Moore, Theodore, Jr., Murphy, Brandon, Nakamura, Hideto, Ohneiser, Christian, Richter, Carl, Robinson, Rebecca, Sawada, Ken, Scher, Howie, Takata, Hiroyuki, Westerhold, Thomas, Wilson, Paul A., Yamamoto, Yuhji, Lyle, Mitchell W., Raffi, Isabella, Gamage, Kusali, Anderson, Louise, Malinverno, Albero, Backman, Jan, Beltran, Catherine, Busch, William, Channell, James, Dewangan, Pawan, Hasegawa, Hitoshi, Hathorne, Edmund, Hayashi, Hiroki, Holbourn, Ann, Hovan, Steven, Iijima, Koichi, Ito, Takashi, Kimoto, Katsunori, Murphy, Daniel, Ogane, Kaoru, Romero, Oscar, Schneider, Leah, Sluijs, Appy, Tian Jun, Tsujimoto, Akira, Wade, Bridget, Wilkens, Roy, Yamamoto, Shinya, Yamazaki, Toshisugu, Proceedings of the Integrated Ocean Drilling Program; Pacific Equatorial Age Transect; Expeditions 320 and 321 of the riserless drilling platform from and to Honolulu, Hawaii (USA); Sites U1331-U1336, 5 March-4 May 2009; and Honolulu, Hawaii (USA), to San Diego, California (USA); Sites U1337-U1338, 4 May-22 June 2009
IODP Management International, Washington, DC, United States
320/321
Previous rock magnetism data compilations from oceanic basement rocks show that intensity of natural remanent magnetization (NRM) decays with age from 0 to 30 Ma and then increases prior to 40 Ma. This temporal trend in NRM is regarded as tentative. One of the problems seems to be that these compilations were made from NRM data without regard to the oceanic plates where the samples were collected. As a case study, we have compiled basement rock NRM data from Deep Sea Drilling Project and Ocean Drilling Program sites on the Pacific plate only. The present compilation results in 103 NRM data points for the 0-50 and 110-170 Ma intervals. We also conducted rock magnetism and paleomagnetism studies on basement rocks recovered from five sites drilled during Integrated Ocean Drilling Program Expedition 320/321 in order to provide new data. These samples yield 13 new NRM data points for the 24-50 Ma interval.
English
Serial
Coverage:Geographic coordinates:
North:50.0000
West:140.0000East: -100.0000
South:-30.0000
Solid-earth geophysics; basalts; basement; boreholes; cores; crust; Deep Sea Drilling Project; East Pacific; Equatorial Pacific; Expedition 320; Expeditions 320/321; igneous rocks; Integrated Ocean Drilling Program; magnetic inclination; magnetization; natural remanent magnetization; North Pacific; Northeast Pacific; Ocean Drilling Program; oceanic crust; Pacific Ocean; Pacific Plate; paleomagnetism; plate tectonics; remanent magnetization; thermal analysis; thermomagnetic analysis; volcanic rocks;
.