Collaborative Research: Criteria for extending sequences across regional shelf-to-slope carbonate environment: Upper Ordovician and Silurian Strata of the Great Basin

合作研究：跨区域陆架到斜坡碳酸盐环境延伸序列的标准：大盆地的上奥陶统和志留系地层

• 批准号: 9317719
• 负责人: Peter Sheehan
• 金额: $ 2.94万
• 依托单位: Milwaukee Public Museum
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-09-15 至 1997-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9317719&HistoricalAwards=false
• 关键词: Collaborative; Research; Criteria; extending; sequences

9317719 Sheehan In this collaborative research, PIs will develop and evaluate criteria for recognizing stratigraphic sequences in outer-shelf and slope carbonate environments. Recognition of sequence boundaries in these settings is problematic because typical boundary criteria are not applicable--exposure events are absent and stratal geometries are difficult to extract from outcrop-scale exposures. PIs will combine stratigraphic, sedimentologic and biostratigraphic study of Ordovician and Silurian strata in the U.S. Great Basin to develop a sequence model; the sequences will be traced along dip and strike transects to evaluate changes in criteria usable in identifying sequence boundaries. This work will contribute not only to understanding Paleozoic history of the Great Basin, but also to developing sequence stratigraphic models for deeper-water carbonate units. Results will have use in both academia and industry.

在这项合作研究中，pi将开发和评估识别外陆架和斜坡碳酸盐岩环境地层层序的标准。在这些环境中，层序边界的识别是有问题的，因为典型的边界标准不适用——暴露事件不存在，地层几何形状难以从露头尺度暴露中提取。pi将结合美国大盆地奥陶系和志留系地层的地层学、沉积学和生物地层学研究，建立层序模型；将沿着倾斜和走向样带对层序进行追踪，以评估可用于识别层序边界的标准的变化。这项工作不仅有助于了解大盆地古生代历史，而且有助于建立深水碳酸盐岩单元的层序地层模式。结果将在学术界和工业界都有用处。