Paleoceanography and distribution of petroleum source rock in Japan based on calcareous nannofossils assemblages analysis

基于钙质超微化石组合分析的日本古海洋学和石油烃源岩分布

• 批准号: 14540436
• 负责人: SATO Tokiyuki
• 金额: $ 2.3万
• 依托单位: Akita University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14540436/
• 关键词: calcareous nannofossil; petroleum geology; petroleum source rock; Paleoceanography; Cenozoic; Miocene; upwelling; 古海岸; 寒冷種; 古生物地理; 生物生産量

We studied in datil of the calcareous nannofossils assemblages found in the Deep Sea cores from Indian to western Pacific Ocean for reconstuction of paleoceanography of the area in the middle to late Miocene. The results indicate that the connection between the Indian and pacific Oceans was stopped during middle Miocene, and drastic changes of oceanographic conditions were occurred during this age. The analysis of calcareous nannofossils assemblages from Japanese Miocene series indicates that the sedimentary basin in both Niigata and Akita area was outlined by NW-SE and NE-SW structural trends. These paleogeography of the Japan Sea Side is stronglu related to occurrence of upwellings which indicate the deposition of organic matters.On the basis of the Paleocenographic conditions based on the analysis of calcareouys nannofossi assemblages, the petroleum source rocks would be deposited in the Nagaoka and Kita-Kanbara area in Niigata area, and the Coast of Japan Seaside along the Kitayuri thrusts faults in Akita area.

本文对印度洋至西太平洋深海岩心中发现的钙质纳米化石组合进行了研究，重建了该地区中新世中晚期的古海洋学。结果表明，中新世中期印度洋与太平洋的联系中断，海洋条件发生了剧烈变化。日本中新统钙质纳米化石组合分析表明，新泻地区和秋田地区的沉积盆地均为NW-SE和NE-SW构造走向。这些古地理特征与上升流的发生密切相关，上升流指示了有机质的沉积。在古地质条件分析的基础上，通过对钙质纳米化石组合的分析，认为新泻地区的长冈和北坎原地区以及秋田地区的北里逆冲断层沿日本海岸沉积了烃源岩。

项目成果

Sato, T., Yuguchi, S., Takayama, T., kameo, K.: "Drasticchange of the geographical distribution of the cold water nannofossils Coccolithus pelagicus Schiller during the late Pliocene."Marine Micropaleontology. (in press).

Sato, T.、Yuguchi, S.、Takayama, T.、kameo, K.：“上新世晚期冷水超微化石 Coccolithus pelagicus Schiller 地理分布的巨大变化。”海洋微古生物学。

Sato, T., Saito, T., Yuguchi, S., nakagawa, H.et al.: "Late Pliocene calcareous nannofossils paleobiogeography of The Pacific Ocean."Revista Mexicana de Ciencias Geologicas. 19(3). 175-189 (2002)

Sato, T.、Saito, T.、Yuguchi, S.、nakakawa, H.等人：“太平洋晚期上新世钙质超微化石古生物地理学”。Revista Mexicana de Ciencias Geologicas。

佐藤時幸, 樋口武志, 石井崇暁, 湯口志穂, 天野和孝, 亀尾浩司: "秋田県北部に分布する上部鮮新統〜最下部更新統の石灰質ナンノ化石層序"地質学雑誌. 109・5. 280-292 (2003)

Tokiyuki Sato、Takeshi Higuchi、Takaaki Ishii、Shiho Yuguchi、Kazutaka Amano、Koji Kameo：“秋田县北部分布的上新世至下更新世钙质超微化石地层”109・5（2003）。

Sato, T., Saito, T., Yuguchi, S., Nakagawa, H., et al.: "Late Pliocene calcareous nannofossils paleobiogeography of the Pacific Ocean"Ewvista Mexicana de Ciencias Geologicas. 19÷3. 175-189 (2002)

Sato, T.、Saito, T.、Yuguchi, S.、Nakakawa, H.等人：“太平洋晚期上新世钙质微化石古生物地理学”Ewvista Mexicana de Ciencias Geologicas 19÷3。 ）

佐藤時幸, 中川洋, 小松原純子, 松本良, 井龍康文, 松田博貴 他: "石灰質に化石層序からみた沖縄本島南部,知念層の地質年代"地質学雑誌. 110・1. 38-50 (2004)

佐藤时之、中川浩、小松原纯子、松本亮、入龙康文、松田博树等：“从钙质化石地层学角度看冲绳本岛南部知念组的地质时代”地质杂志110・1。 50 (2004)