Data report; Late Miocene to early Pliocene coccolithophore and foraminiferal preservation at Site U1338 from scanning electron microscopy

Online Access: Get full text
doi: 10.2204/iodp.proc.320321.218.2014
Author(s): Drury, Anna Joy; Lee, Geoffrey P.; Pennock, Gillian M.; John, Cédric M.
Integrated Ocean Drilling Program, Expedition 320 Scientists, College Station, TX
Author Affiliation(s): Primary:
Imperial College London, Department of Earth Science and Engineering, London, United Kingdom
Other:
Hokkaido University, Japan
Integrated Ocean Drilling Program, United States
Lamont-Doherty Earth Observatory, United States
University of California-Davis, United States
University College London, United Kingdom
University of California-Santa Cruz, United States
University of Leicester, United Kingdom
Westfälische Wilhelms-Universität Münster, Germany
Goethe University of Frankfurt, Germany
Korea Ocean Research and Development Institute, South Korea
Japan Agency for Marine-Earth Science and Technology, Japan
Rice University, United States
University of Michigan, United States
University of Otago, New Zealand
University of Louisiana, United States
University of Rhode Island, United States
University of South Carolina, United States
Shimane University, Japan
University of Bremen, Germany
Kochi University, Japan
Universita "G. D'Annunzio", Italy
Stockholm University, Sweden
Université Pierre et Marie Curie, France
University of New Orleans, United States
University of Florida, United States
National Institute of Oceanography, India
University of Tokyo, Japan
Christian-Albrechts-Universität zu Kiel, Germany
Indiana University of Pennsylvania, United States
Ibaraki University, Japan
Tohoku University, Japan
Universidad de Granada, Spain
Pennsylvania State University, United States
Utrecht University, Netherlands
Tongji University, China
Osaka City University, Japan
University of Hawaii-Manoa, United States
AIST, Geological Survey of Japan, Japan
Volume Title: 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
Volume Author(s): 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, Alberto; 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 S.; Wilkens, Roy; Yamamoto, Shinya; Yamazaki, Toshitsugu
Source: 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, Heiko Palike, Hiroshi Nishi, Adam Klaus, Helen Evans, Trevor Williams, Gary D. Acton, Paul Bown, Margaret Delaney, Tom Dunkley Jones, Kirsty Edgar, Peter Fitch, Nikolaus Gussone, Jens Herrle, Kiseong Hyeong, Shin-ichi Kamikuri, Junichiro Kuroda, Lizette Leon-Rodriguez, Theodore Moore, Jr., Brandon Murphy, Hideto Nakamura, Christian Ohneiser, Carl Richter, Rebecca Robinson, Ken Sawada, Howie Scher, Hiroyuki Takata, Thomas Westerhold, Paul A. Wilson, Yuhji Yamamoto, Mitchell W. Lyle, Isabella Raffi, Kusali Gamage, Louise Anderson, Alberto Malinverno, Jan Backman, Catherine Beltran, William Busch, James Channell, Pawan Dewangan, Hitoshi Hasegawa, Edmund Hathorne, Hiroki Hayashi, Ann Holbourn, Steven Hovan, Koichi Iijima, Takashi Ito, Katsunori Kimoto, Daniel Murphy, Kaoru Ogane, Oscar Romero, Leah Schneider, Appy Sluijs, Tian Jun, Akira Tsujimoto, Bridget S. Wade, Roy Wilkens, Shinya Yamamoto and Toshitsugu Yamazaki; Integrated Ocean Drilling Program, Expedition 320 Scientists, College Station, TX; Integrated Ocean Drilling Program, Expedition 321 Scientists. Proceedings of the Integrated Ocean Drilling Program (Online), Vol.320/321, 14p. Publisher: Integrated Ocean Drilling Program Management International for the Integrated Drilling Program (IODP), Washington, DC, United States. ISSN: 1930-1014 CODEN: IDSDA6
Note: In English. 28 refs.; illus., incl. 1 table, sketch map
Summary: The late Miocene to early Plioce ne carbonate-rich sediments recovered at Integrated Ocean Drilling Program (IODP) Site U1338 during the Expedition 320/321 Pacific Equatorial Age Transect (PEAT) program contain abundant calcareous nanno- and microfossils. Geochemical proxies from benthic and planktonic foraminiferal and coccolithophore calcite could be very useful at this location; however, good preservation of the calcite is crucial for the proxies to be robust. Here, we evaluate the preservation of specific benthic and planktonic foraminifer species and coccolithophores in fine fraction sediment at Site U1338 using back-scattered electron (topography mode) scanning electron microscopy (BSE-TOPO SEM). Both investigated foraminiferal species, Cibicidoides mundulus and Globigerinoides sacculifer, have undergone some alteration. The C. mundulus show minor evidence for dissolution, and only some specimens show evidence of overgrowth. The Gs. sacculifer show definite signs of alteration and exhibit variable preservation, ranging from fair to poor; some specimens show minor overgrowth and internal recrystallization but retain original features such as pores, spine pits, and internal test-wall growth structure, whereas in other specimens the recrystallization and overgrowth disguise many of the original features. Secondary electron and BSE-TOPO SEM images show that coccolith calcite preservation is moderate or moderate to poor. Slight to moderate etching has removed central heterococcolith features, and a small amount of secondary overgrowth is also visible. Energy dispersive spectroscopy analyses indicate that the main sedimentary components of the fine fraction sediment are biogenic CaCO3 and SiO2, with some marine barite. Based on the investigations in this data report, geochemical analyses on benthic foraminifers are unlikely to be affected by preservation, although geochemical analyses on the planktonic foraminifers should be treated cautiously because of the fair to poor and highly variable preservation.
Year of Publication: 2014
Research Program: IODP Integrated Ocean Drilling Program
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Algae; Benthic taxa; Biostratigraphy; Calcite; Carbonates; Cenozoic; Coccolithophoraceae; Cores; East Pacific; Expedition 321; Expeditions 320/321; Foraminifera; IODP Site U1338; Integrated Ocean Drilling Program; Invertebrata; Lower Pliocene; Marine sediments; Microfossils; Miocene; Neogene; North Pacific; Northeast Pacific; Overgrowths; Pacific Ocean; Planktonic taxa; Plantae; Pliocene; Preservation; Protista; Recrystallization; SEM data; Sediments; Tertiary; Upper Miocene
Coordinates: N023028 N023028 W1175811 W1175811
Record ID: 2014089742
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute.