Magnetostratigraphy and Chronostratigraphic Facies Evolution, Little Bahama Bank

磁性地层学和年代地层相演化，小巴哈马浅滩

• 批准号: 8817060
• 负责人: Robert Ginsburg
• 金额: $ 7.49万
• 依托单位: University of Miami
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-02-01 至 1991-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8817060&HistoricalAwards=false
• 关键词: Magnetostratigraphy; Chronostratigraphic; Facies; Evolution; Little

Shallow-water carbonate platforms contain a rich-record of changing environments related to globally synchronous external controls including sea level and changes in circulation. However, we have until now been unable to link the timing of these controlling events with actual platform rock sequences due to early diagenetic changes. Furthermore, the correlation and influence of platform-derived sediment with the proximal deep- water areas was also not possible. Many of these limitations for efficiently extracting information from the platforms have now been obviated by the successful application of magnetostratigraphic dating to the shallow-water carbonates. This research will develop a chronostratigraphic facies evolution of a carbonate platform, will assess the influence of eustatic sea level changes and will correlate with surrounding deep-water environments. Once completed, the results will enable a refined chronostratigraphic platform-periplatform model, linking the entire depositional system.

浅水碳酸盐平台包含与全球同步外部控制有关的各种不断变化的环境，包括海平面和循环变化。 但是，由于早期的成岩化变化，我们必须到目前为止无法将这些控制事件的时间与实际平台岩石序列联系起来。 此外，也不可能使用平台衍生的沉积物与近端深水区的相关性和影响。 现在，通过成功地将磁层的日期应用于浅水碳酸盐，已消除了从平台中有效提取信息的许多限制。 这项研究将开发出碳酸盐平台的年度地层学相的演变，将评估Eustatic海平面变化的影响，并将与周围的深水环境相关。 完成后，结果将使精制的年度地层平台 - 周期性模型链接到整个沉积系统。