Integrated Biostratigraphy and High Resolution Seismic Stratigraphy of the Ross Sea: Implications for Cenozoic Eustatic and Climate Change

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: 9220844
• 负责人: Peter-Noel Webb
• 金额: $ 5.6万
• 依托单位: Ohio State University Research Foundation -DO NOT USE
• 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 1998-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9220844&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.

该奖项支持对罗斯海大陆架的冰川-海洋地层学进行地震、沉积学和古生物综合调查。这项工作的目的是获取冰川沉积物的地震图像和沉积岩芯，以便更好地了解罗斯海地区新生代冰川史。这项调查将利用高分辨率的地震剖面数据来定位更新世冰川冰川薄或可能没有的地区。如果冰斗被穿透，在这些位置的活塞取心将提供新生代沉积环境的沉积记录，并可能为南极冰盖的波动提供重要线索。地震剖面图将直接记录更新世罗斯冰架的搁浅历史，还将对活塞芯中恢复的沉积物所代表的新生代沉积单位进行一级对比。这项工作将提供西南极冰盖和东南极冰盖历史的重要替代记录，这反过来将为气候模型提供重要的限制。