Integrated Biostratigraphy and High Resolution Seismic Stratigraphy of the Ross Sea: Implication for Cenozoic Eustatic and Climatic Changes

罗斯海综合生物地层学和高分辨率地震地层学：对新生代海平面上升和气候变化的影响

• 批准号: 9220854
• 负责人: David Harwood
• 金额: $ 4.13万
• 依托单位: University of Nebraska-Lincoln
• 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: 1993-07-01 至 1997-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9220854&HistoricalAwards=false
• 关键词: Integrated; Biostratigraphy; Resolution; Seismic; Stratigraphy

This award supports an integrated seismic, sedimentologic, and paleontologic investigation of glacio-marine stratigraphy of the Ross Sea continental shelf. The purpose of this work is to acquire seismic images and sediment cores of the glacial sediments toward a better understanding of the Cenozoic history of glaciation in the Ross Sea region. This investigation will utilize high resolution seismic profiling data to locate regions where the Pleistocene glacial till is thin or perhaps absent. Piston coring at these locations, if the till is penetrated, will provide sedimentary records of Cenozoic depositional environments and could provide important clues to fluctuations of the Antarctic Ice Sheets. The seismic profiling will provide a direct record of the grounding history of the Ross Ice Shelf during the Pleistocene and it will also allow first order correlations of Cenozoic sedimentary units that are represented by sediments recovered in the piston cores. This work will provide important proxy records of the history of both the West Antarctic Ice Sheet and the East Antarctic Ice Sheet and this, in turn, will provide important constraints to climate models.

该奖项支持综合地震、沉积学和 冰川-海洋地层古生物学研究 罗斯海大陆架。 这项工作的目的是 获取冰川的地震图像和沉积物岩心 更好地了解新生代的历史 罗斯海地区的冰川作用 这次调查将 利用高分辨率地震剖面数据确定区域 那里的更新世冰碛物很薄或者可能不存在 在这些位置的活塞取芯，如果直到被穿透，将 提供了新生代沉积环境的沉积记录 并能提供重要的线索， 南极冰盖。 地震剖面将提供 罗斯冰架搁浅历史的直接记录 在更新世，它也将允许一阶 代表的新生代沉积单元的对比 是由活塞芯中的沉积物造成的 这项工作将 提供了西方历史的重要替代记录， 南极冰盖和东南极冰盖， 反过来，将为气候模型提供重要的限制。