Carbonate deposition/dissolution and environmental changes through the earth histroy

地球历史上的碳酸盐沉积/溶解和环境变化

• 批准号: 05303001
• 负责人: MATSUMOTO Ryo
• 金额: $ 4.61万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Co-operative Research (A)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-05303001/
• 关键词: Carbonate rocks; Isotopic compositions; Sea level changes; Chemical weathering; Coral reef; Strontiumu isotopes; 微量元素; カルスト; 石灰洞; 生物礁; 酸素同位体組成; トロマイト; 大気二酸化炭素

1.Research ActivitiesNumber of research meetings and seminars were held to stimulate discussions and exchange of information. Paperd read at these meetings have been published as an annual report or abstract volums. We also established a data-base for carbonate study(CADBA), which includes approximately 180,000 articles.2.Highlights of the ProjectWe revealed that the carbon isotopic composition of carbonates shows strong netagive anomly just below the Precambrian/Cambrian boundary, and strong positive anomaly just above the boundary. This implies that the shallow sea water was enriched in organic carbon derived carbonate species just before the boundary. Based on the strontiumu isotope stratigraphy, dolomitization of the Miocene reefal limestonewas found to have been occurred by the mixing of sea-water and meteoric waters during the period of low sea levels.We have suggested the possibility that ooids might have been formed under strong influence of bacterial activity(bacterial induced carbonates), based on the electron microscope observations.3.Impact of the projectSeveral cooperative research projects have been initiated and stimulated through the descussion and cooperation at the meetings. This project has made clearl that the elucidation of a vital effects in biomineralization and disequibrium precipitation of inorganic carbonates are crucial for the fuller understanding of carbonate precipitation and dissolution.

1.研究活动举行了若干研究会议和研讨会，以促进讨论和信息交流。在这些会议上宣读的文件已作为年度报告或摘要卷出版。2.项目重点研究结果表明，前寒武系/寒武系界线以下碳酸盐岩碳同位素组成呈强负异常，界线以上碳酸盐岩碳同位素组成呈强正异常。这意味着在边界之前，浅海水富含有机碳衍生的碳酸盐物种。根据锶同位素地层学研究，发现中新世礁灰岩的矿化作用是在低海平面时期海水与大气沃茨的混合作用下发生的，并提出了在细菌活动的强烈影响下形成鲕粒的可能性（细菌诱导的碳酸盐），3.项目的影响通过在北京大学的讨论与合作，启动并促进了几个合作研究项目。会议.本项目的研究表明，阐明生物矿化和无机碳酸盐不均衡沉淀的重要作用，对于更全面地了解碳酸盐沉淀和溶解过程至关重要。

项目成果

Yamamoto,S.: "Accreted Mesozoic pelagic seamount in Chirai quarry Hokkaido,Japan" Paleo geography,paleoclimatology paleo ecology. 105. 125-137 (1993)

Yamamoto,S.：“日本北海道 Chirai 采石场增生的中生代远洋海山”古地理学、古气候学、古生态学。

狩野 彰宏,吉田 靖: "秋吉帯石灰岩の不連続的堆積" 地質学雑誌. 100. 731-742 (1994)

Akihiro Kano，Yasushi Yoshida：“Akiyoshi 带石灰岩的不连续沉积”地质杂志 100. 731-742 (1994)。

吉村和久: "CO_2循環における炭酸塩溶解の役割" 地球化学. 27. 21-28 (1993)

Kazuhisa Yoshimura：“碳酸盐溶解在 CO_2 循环中的作用”地球化学 27. 21-28 (1993)。

Yoshimura, Kazuhisa: "Role of carbonate dissolution in CO2-cylce." Chikyuu-Kagaku(Geochemistry). 27. 21-28 (1993)

Yoshimura、Kazuhisa：“碳酸盐溶解在 CO2 循环中的作用。”

Schenk,Matsumoto,and Bitter: "Deap-basin/deep-water carbunate-euapurite deposition of a saline giant-Loch Macumber(Visean)Atlantic Canada" Carbonates and Evaporites. 9. 187-210 (1994)

Schenk、Matsumoto 和 Bitter：“加拿大大西洋省马坎伯湖（维辛）咸水巨型盆地/深水碳酸盐-真铜酸盐沉积”碳酸盐和蒸发岩。