COLLABORATIVE RESEARCH: Tectonic and Stratigraphic Evolution of the Loreto Basin, Baja California Sur: A Transform-Rift Basin

合作研究：南下加利福尼亚州洛雷托盆地的构造和地层演化：一个转换裂谷盆地

• 批准号: 9118301
• 负责人: Paul Umhoefer
• 金额: $ 4.95万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-12-01 至 1992-09-03
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9118301&HistoricalAwards=false
• 关键词: COLLABORATIVE; RESEARCH; Tectonic; Stratigraphic; Evolution

This collaborative project will study the structural and stratigraphic evolution of the Pliocene-Quaternary Loreto Basin, which lies along the margin of the Gulf of California in Baja California Sur. A transform-rift system beginning at 5Ma formed the Loreto and related basins but they have not been studied in detail until now, despite good exposure and accessibility. Magnetostratigraphy will be combined with radiometric dating of four tuffs and paleontological data of other workers to give good chronostratigraphic control of the basin's evolution. These data will permit investigation of the role of growth structures on the stratigraphic geometries in the basin. The results will resolve major outstanding problems in the tectonics of the Gulf of California, and will have important implications for the tectonics of obliquely-rifted margins in general.

这个合作项目将研究结构和 上新世-第四纪洛雷托盆地地层演化 它沿着巴哈的加州湾的边缘 南加州 5 Ma开始形成转换裂谷系 洛雷托和相关盆地，但他们没有被研究， 细节，直到现在，尽管良好的曝光和可访问性。 磁性地层学将与放射性测年相结合， 四个凝灰岩和古生物学数据的其他工作者给好 年代地层控制了盆地的演化。 这些数据 将允许调查增长结构的作用， 盆地中的地层几何形状。 结果将解决 海湾构造中的主要突出问题 加州，并将有重要的影响， 一般来说，都是裂谷边缘。