Chronostratigraphy and Environmental Variability in Postglacial Carbonates of the Tahiti Coral Reef

大溪地珊瑚礁冰后碳酸盐的年代地层学和环境变化

• 批准号: 0751827
• 负责人: Steven Lund
• 金额: $ 17.62万
• 依托单位: University of Southern California
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-04-01 至 2011-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0751827&HistoricalAwards=false
• 关键词: Chronostratigraphy; Environmental; Variability; Postglacial; Carbonates

This project is to conduct paleomagnetic/rock magnetic studies on 504 samples of carbonate deposited by microbes (stromatolites) in the interstices of the macro-coral framework in Postglacial/late-Pleistocene coral-reef sediments from Tahiti on IODP Expedition #310. The aim is to develop a chronostratigraphic/lithostratigraphic framework for the microbial component of the entire Tahiti Coral Reef. This framework will be used to determine the age and growth rate for the reef microbialites and assess the timing of millennial-scale environmental variability in the coral reef for the last ~19,000 years.

本项目是对大溪地冰后期/晚更新世珊瑚礁沉积物中微生物(叠层石)在冰后期/晚更新世珊瑚礁沉积物中沉积的504个碳酸盐样品进行古地磁/岩石磁性研究。其目的是为整个塔希提岛珊瑚礁的微生物成分建立一个年代地层/岩石地层框架。这个框架将被用来确定珊瑚礁微生物的年龄和增长率，并评估过去约19,000年来珊瑚礁千年尺度环境变化的时间。