Mid-Pliocene diatom assemblages at sites 1016, 1021, and 1022

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doi: 10.2973/odp.proc.sr.167.226.2000
Author(s): Barron, John A.
Author Affiliation(s): Primary:
U. S. Geological Survey, Menlo Park, CA, United States
Other:
Hokkaido University, Japan
Ocean Drilling Program, United States
California State University at Long Beach, United States
Stockholm University, Sweden
Museum National d'Histoire Naturelle, France
University of California at Santa Cruz, United States
Lamont-Doherty Earth Observatory, United States
Université Louis Pasteur, France
Universita di Padova, Italy
Universität München, Federal Republic of Germany
Rosenstiel School of Marine and Atmospheric Science, United States
Indiana University of Pennsylvania, United States
Florida State University, United States
Oregon State University, United States
Universidad Nacional Autónoma de Mexico, United States
Yamagata University, Japan
Mount Allison University, Canada
University of Southampton, United Kingdom
Universidad de Sonora, Mexico
University of Erlangen, Federal Republic of Germany
University of Tokyo, Japan
University College London, United Kingdom
Geological Survey of Japan, Japan
Volume Title: Proceedings of the Ocean Drilling Program, scientific results, California margin; covering Leg 167 of the cruises of the drilling vessel JOIDES Resolution, Acapulco, Mexico, to San Francisco, California, sites 1010-1022, 20 April-16 June 1996
Volume Author(s): Lyle, Mitchell; Koizumi, Itaru; Richter, Carl; Behl, Richard J.; Bodén, Per; Caulet, Jean-Pierre; Delaney, Margaret L.; deMenocal, Peter; Desmet, Marc; Fornaciari, Eliana; Hayashida, Akira; Heider, Franz; Hood, Julie A.; Hovan, Steven A.; Janecek, Thomas R.; Janik, Aleksandra G.; Kennett, James P.; Lund, David; Machain Castillo, Maria L.; Maruyama, Toshiaki; Merrill, Russell B.; Mossman, David J.; Pike, Jennifer; Ravelo, A. Christina; Rozo Vera, Gloria A.; Stax, Rainer; Tada, Ryuji; Thurow, Jürgen W.; Yamamoto, Masanobu; Nessler, Susan; Miller, Christine M.; Peters, Lorri L.
Source: Proceedings of the Ocean Drilling Program, scientific results, California margin; covering Leg 167 of the cruises of the drilling vessel JOIDES Resolution, Acapulco, Mexico, to San Francisco, California, sites 1010-1022, 20 April-16 June 1996, Mitchell Lyle, Itaru Koizumi, Carl Richter, Richard J. Behl, Per Bodén, Jean-Pierre Caulet, Margaret L. Delaney, Peter deMenocal, Marc Desmet, Eliana Fornaciari, Akira Hayashida, Franz Heider, Julie A. Hood, Steven A. Hovan, Thomas R. Janecek, Aleksandra G. Janik, James P. Kennett, David Lund, Maria L. Machain Castillo, Toshiaki Maruyama, Russell B. Merrill, David J. Mossman, Jennifer Pike, A. Christina Ravelo, Gloria A. Rozo Vera, Rainer Stax, Ryuji Tada, Jürgen W. Thurow, Masanobu Yamamoto, Susan Nessler, Christine M. Miller and Lorri L. Peters. Proceedings of the Ocean Drilling Program, Scientific Results, Vol.167, p.111-113. Publisher: Texas A & M University, Ocean Drilling Program, College Station, TX, United States. ISSN: 0884-5891
Note: In English. Data report. 6 refs.CD-ROM format, ISSN 1096-2514; WWW format, ISSN 1096-7451; all chapters are also available on the included CD-ROM and on the Web in PDF format; illus., incl. 1 table
Summary: Diatom assemblages from the middle part of the Pliocene (3.2-2.5 Ma) were investigated from Ocean Drilling Program Sites 1016, 1021, and 1022 in an effort to infer paleotemperature fluctuations off California. Diatoms are very sparse in virtually all of the samples that were examined from Sites 1016 and 1021. This is presumably because these sites were seaward (west) of the coastal zone of diatom productivity during the middle part of the Pliocene. Diatoms are relatively common in the vast majority of samples that were examined from Hole 1022A. Diatom assemblages are dominated by Chaetoceros spores (a coastal upwelling component), the cold-water (subarctic) taxa Neodenticula kamtschatica and its descendant Neodenticula koizumii, and Thalassionema nitzschioides, a temperate taxon that is typically found at the seaward edge of coastal upwelling zones. Paleotemperature interpretations, however, are not possible at this time because of the scarcity of comparative modern core-top data.
Year of Publication: 2000
Research Program: ODP Ocean Drilling Program
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Algae; Assemblages; Biostratigraphy; California; Cenozoic; Chaetoceros; Continental margin; Diatoms; East Pacific; Leg 167; Marine environment; Microfossils; Middle Pliocene; Neodenticula; Neogene; North Pacific; Northeast Pacific; ODP Site 1016; ODP Site 1021; ODP Site 1022; Ocean Drilling Program; Pacific Ocean; Paleo-oceanography; Paleoclimatology; Paleoecology; Paleotemperature; Plantae; Pliocene; Reconstruction; Sea-surface temperature; Species diversity; Tertiary; Thalassionema; United States; Variations
Coordinates: N343220 N343220 W1221635 W1221635
N390515 N390515 W1274659 W1274659
N400451 N400451 W1252034 W1252034
Record ID: 2000080020
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