2004 Fiscal Year Final Research Report Summary
High-resolution chronostratigraphic and biofacies analysis of the marine Cretaceous on the North American Pacific coast
| Project/Area Number |
14255001
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 海外学術 |
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| Research Field |
Stratigraphy/Paleontology
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| Research Institution | The University of Tokyo |
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Principal Investigator |
TANABE Kazushige The University of Tokyo, Graduate School of Science, Professor, 大学院・理学系研究科, 教授 (20108640)
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| Co-Investigator(Kenkyū-buntansha) |
NISHI Hiroshi Hokkaido University, Graduate School of Science, Associate Professor, 大学院・理学研究科, 助教授 (20192685)
KODAMA Kazuto Kochi University, Marine Core Research Center, Professor, 海洋コア研究センター, 教授 (00153560)
MAEDA Haruyoshi Kyoto University, Graduate School of Science, Associate Professor, 大学院・理学研究科, 助教授 (10181588)
SHIGETA Yasunari National Science Museum, Department of Geology, Researcher, 地学研究部, 研究官(研究職) (30270408)
TSUJINO Yasuyuki Tokushima Prefectural Museum, Department of Geology, Researcher, 地学研究部, 研究員(研究職) (60372223)
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| Project Period (FY) |
2002 – 2004
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| Keywords | North American Pacific coast / Marine Cretaceous / Biochronology / California / Alaska / ammonites / microfossils / magnetostratigraphy |
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| Research Abstract |
This study has its aims to establish chronostratigraphy and international correlation of the Cretaceous deposits in the north Pacific regions as well as to consider the establishment of the north Pacific bioprovince from analysis of yielded macro faunas. For this purpose, international field expedition has been carried out in 2002-2004 for the marine Cretaceous deposits on the U.S.Pacific coast. The marine Cretaceous deposits (Great Valley Sequence) widely exposed along the Sacramento Valley, northern California and those in the Talkeetna Mountains, southern Alaska have been studied from the lithostratigraphic, biostratigraphic and magnetostratigraphic points of view. As a result of our field and laboratory studies successively collected fossil samples and sediment core samples, detailed mega-and microfossil biostratigraphic frameworks have been established for the Barremian to Turonian sequence in the North Fork Cottonwood Creek, northern California. Also, five magnetostratigraphic stages, i.e., M5,M3,M1,M0r,C34n (with M-1r reversal horizon) were recognized in the Barremian to Lower Albian sequence. This is the first report of the high-resolution Early to Middle Cretaceous biochronology and magnetostraligraphy in the North pacific regions. We have also recognized the continuous highly fossiliferous marine Campanian to Maastrichtiain strata from the Talkeetna Mountains, southern Alaska.
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Research Products
(12 results)
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[Journal Article] Seasonal temperature fluctuations in the high northern latitudes during the Cretaceous Period : isotopic evidence from Albian and Conician shallow-water invertebrates of the Talovka River basin, Koryak Upland, Russian Far East.2005
Author(s)
Zakharov, Y.D., et al.(incl.Tanabe, K., Maeda, H., Shigeta, Y., Moriya, K.)
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Journal Title
Cretaceous Research 26
Pages: 113-132
Description
「研究成果報告書概要(和文)」より
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[Journal Article] Biostratigraphy of the Upper Albian to Lower Cenomanian in Oyubari, Hokkaido, Japan : implications for the Cretaceous biochronology in the North Pacific.2003
Author(s)
Kawabe, F., Takashima, R., Wani, R., Moriya, K., Nishi, H.
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Journal Title
Acta Geologica Polonia 53
Pages: 81-99
Description
「研究成果報告書概要(和文)」より
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[Journal Article] Biostratigraphy of the Upper Albian to Lower Cenomanian in Oyubari, Hokkaido, Japan : implications for the Cretaceous biochronology in the North Pacific.2003
Author(s)
Kawabe, F., Takashima, R., Wani, R., Moriya, K., Nishi, H.
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Journal Title
Acta Geologica Polonica vol.53
Pages: 81-99
Description
「研究成果報告書概要(欧文)」より
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