Study of Ocean Floor Structure and Evolution by Drilling

通过钻探研究洋底结构及演化

• 批准号: 06044051
• 负责人: SUYEHIRO Kiyoshi
• 金额: $ 20.86万
• 依托单位: Ocean Research Institute, Univ.of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for international Scientific Research
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06044051/
• 关键词: Carbonate Platform; Sequence Stratrgraphy; Sea Level Change; Climatic Change; Heinrich Event; Hydrothermal Ore; Accretionary Prism; Subduction Erosion; 深海掘削; 地層の形成; ガスハイドレート; 大陸分裂; 北大西洋深海水; ドリフト堆積物; 有機質泥岩; 海洋循環; 大陸衝突; ブレーク海嶺; 天然ガス資源; 海底

The purpose of this research project is to investigate the history of Earth's environmental changes and geodynamics of the Earth interior through ocean drilling. This year, the following four main themes were investigated.1) Study of sea level changes and carbonate platform sequence stratigraphy based on the drilling in the Bahama bank. The study showed that progradation, agradation and hiatus formation were closely related to sea level changes and verified the use of sequence stratigraphy in this kind of setting.2) Investigation of the records and causes of rapid climatic and paleoceanographic changes recorded in the high-resolution core samples of the California margin and Sanich Inlet. The results showed that both rapid cooling and warming events were recorded in these cores suggesting that similar rapid events revealed by ice cores and hig latidude ocean such as Heinrich Event are in global scale nature.3) Study of hydrothermal system and ore deposits in the Juan de Fuca Ridge and its sedimented part based on a long-term borehole observatory (CORK). The area of hydrothermal fluid discharge and recharge was specified and the magnitude of circulation cell was determined. This result contributed significantly to the simulation of the hydrothermal system.4) Study of plate subduction, accretionary prism hydrogeology, tectonic erosion in the Barbados and Costa Rica margins. The CORK experiment and logging while drilling was found to be extremely useful for the study of fluid flow and physical properties of the subduction complex. The Costa Rica margin turned out to be a boundary which is dominated by large-scale subduction erosion, not by sediment underplating which was preferred interpretation before drilling.

该研究项目的目的是通过海洋钻探研究地球内部环境变化和地球动力学的历史。今年，研究了以下四个主要主题。1）基于巴哈马银行钻探的海平面变化和碳酸盐平台序列地层研究。该研究表明，在这种情况下，前体，a ad和裂隙形成与海平面变化密切相关，并验证了序列地层的使用。2）研究在加利福尼亚余量和Sanich Inlet的高分辨率核心样品中记录了快速气候和古环摄影变化的记录和原因的原因。结果表明，在这些核心中记录了快速冷却和变暖事件，这表明冰芯和诸如海因里希事件之类的冰核和希格·拉多德海洋的类似快速事件处于全球规模的性质中。3）研究水热系统和矿石沉积物在胡安de Fuca Ridge及其在长期的钻孔（Cork）（Cork）（Cork）的沉积部分中的矿石沉积物。指定了水热流体排放和充电面积，并确定了循环细胞的大小。该结果对热液系统的仿真产生了重大贡献。4）板俯冲，增生棱镜水文地质学，巴巴多斯和哥斯达黎加缘的构造侵蚀。发现钻孔时的软木实验和伐木对于研究俯冲配合物的流体流量和物理特性非常有用。事实证明，哥斯达黎加的边缘是一个边界，它以大规模俯冲侵蚀为主，而不是由沉积物低估，而沉积物是在钻孔之前首选的解释。

项目成果

平朝彦、徳山英一、末広潔、高橋成実、清川昌一、森田澄人、斉藤実篤、青池寛: "大陸地殻はどのようにしてできたか。" 月刊地球. 号外No.16. 88-92 (1996)

Asahiko Taira、Eiichi Tokuyama、Kiyoshi Suehiro、Narumi Takahashi、Shoichi Kiyokawa、Sumito Morita、Saneatsu Saito、Hiroshi Aoike：“大陆地壳是如何形成的？”月刊特刊第 16 期。88-92（1996 年）

Moore, J.C., Klaus, A., and Leg 171A Shipboard Party: College Station, TX (Ocean Drilling Program) (in press). Proceedings of the Ocean Drilling Program, Initial Reports, 170A., (1997)

Moore, J.C.、Klaus, A. 和 Leg 171A 船上派对：德克萨斯州大学城（海洋钻探计划）（正在印刷中）。

Matsuoka, A., Aita, Y., Munasri, Wakita, K., Shen, G., Ujiie, H., Sashida, K., Vishnevskaya, V.S., Bragin, N.Y.and Cordey, F.: "Mesozoic radiolarians and radiolarian-bearing sequences in the circum-Pacific regions : A report of the symposium "Radiolarians

Matsuoka, A.、Aita, Y.、Munasri、Wakita, K.、Shen, G.、Ujiie, H.、Sashida, K.、Vishnevskaya, V.S.、Bragin, N.Y. 和 Cordey, F.：“中生代放射虫和放射虫

Aita, Y., Ogata, K., Murakami, H., Shimamura, K.and Sakai, T.: "Late Cretaceous and Eocene radiolarians from the Goshoura and Maki-shima Islands. Amakusa, Kumamoto, Japan" News of Osaka Micropaleontologist. Special Volume. 1-17 (1996)

Aita, Y.、Ogata, K.、Murakami, H.、Shimamura, K. 和 Sakai, T.：“来自 Goshoura 和 Maki-shima 群岛的晚白垩世和始新世放射虫。日本熊本天草” 大阪微型古生物学家新闻

相田吉昭・緒方和徳・村上 宏・嶋村清・酒井豊三郎: "熊本県天草郡,御所浦島および牧島から産出した白亜紀後期および始新世放散虫化石," 大阪微化石研究会誌. 特別号,10. 1-17 (1996)

Yoshiaki Aida、Kazunori Ogata、Hiroshi Murakami、Kiyoshi Shimamura、Toyosaburo Sakai：“来自熊本县天草郡 Goshoura 岛和 Makishima 的晚白垩世和始新世放射虫化石”，大阪微化石研究会杂志特刊，10. .1。 -17 (1996)