US-France Cooperative Research: Late Neogene Paleoceanogra-phy of the Centeral Indian Basin

美法合作研究：印度中部盆地新近纪晚期古海洋学研究

• 批准号: 8913705
• 负责人: David Johnson
• 金额: $ 0.73万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-04-01 至 1992-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8913705&HistoricalAwards=false
• 关键词: US; France; Cooperative; Research; Late

This award will support collaborative research between Dr. David Johnson, Woods Hole Oceanographic Institution and Dr. Jean Pierre Caulet, Museum of Natural History, Paris, France. The objective of the project is the detailed sampling and analysis of long piston cores collected in the Central Indian Basin during the 1989 coring expedition of the French research vessel Marion Dufresne. In the region where the cores were collected, the Neogene radiolarian assemblages are well preserved and the paleomagnetic polarity record can be readily identified. Using the long cores, the investigators will be able to refine and extend precise calibrations of faunal datum levels with the magnetic polarity time scale into the Late and Middle Miocene. They will also be able to integrate the silica records with those of cores taken from previous expeditions on this vessel. Through this synthesis, the investigators expect to be able to interpret the regional silica distribution patterns in terms of the tectonic and paleoceanographic history of the Central Indian Ocean. This study may provide important constraints on subsequent models by evolutionary biologists. The qualitative data may point the way toward stratigraphic intervals and geographic regions where time-transgressive evolutionary patterns can be further substantiated using other microfaunal and microfloral fossil marine organisms. The project will benefit from the complementary expertise of the two investigators in micropaleontology and sedimentology.

该奖项将支持大卫博士与 约翰逊、伍兹霍尔海洋研究所和让·皮埃尔博士 科莱，自然历史博物馆，巴黎，法国。 的目标 本项目是对长活塞的详细取样和分析， 1989年在中印度盆地采集的岩心 法国研究船Marion Dufresne。 在采集岩芯的地区， 组合保存完好，古地磁极性记录 可以很容易地识别。 利用长岩芯，研究人员 将能够完善和扩展动物群的精确校准， 基准面与磁极性时间尺度成晚， 中中新世。 他们还将能够整合硅 记录与以前的探险队在这方面取得的核心 容器。 通过这种综合，研究人员希望能够 解释区域二氧化硅分布模式， 中印度板块的构造和古海洋学历史 海洋 这项研究可能会提供重要的限制， 进化生物学家的模型。 定性数据可能表明 走向地层间隔和地理区域， 可以进一步证实时间侵入的进化模式 利用其他微动物群和微植物群的海洋生物化石。 的 项目将受益于两个互补的专业知识 微体古生物学和沉积学的研究者。