SGER: Brazos River, Texas: Drilling the K-T and Chicxulub Event Strata

SGER：德克萨斯州布拉索斯河：钻探 K-T 和 Chicxulub 活动地层

• 批准号: 0447171
• 负责人: Gerta Keller
• 金额: --
• 依托单位: Princeton University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-09-01 至 2006-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0447171&HistoricalAwards=false
• 关键词: SGER; Brazos; River; Texas; Drilling

PI plans to drill the K-T transition in the Brazos River area in order to recover a series of cores that span the late Maastrichtian and early Paleocene, including the K-T boundary horizon, the Iridium layer and the Chicxulub event strata at a minimal cost of $15,000. The Brazos River sequence can provide a critical source of data that has the potential to solve the current controversy over the age of the Chicxulub impact, as well as the nature of the mass extinction in the marine realm. Scientific analyses will be carried out by an international team led by GK and including scientists from the US, France, Spain, Germany and Switzerland, and will include microfossil biostratigraphies (foraminifera, nannofossils, palynomorphs), sequence stratigraphy, mineralogy, stable isotopes, trace elements, PGEs and Iridium analysis. These studies will have a broad impact on K-T research and will provide one of the most complete and comprehensive datasets for the K-T transition thanks to the unparalelled preservation of carbonate in these sediments.

PI计划在Brazos河地区钻探K-T过渡段，以恢复一系列跨越马斯特里赫特晚期和古新世早期的岩心，包括K-T边界层、铱层和希克苏鲁布事件地层，最低成本为15000美元。布拉索斯河序列可以提供一个关键的数据来源，有可能解决目前关于希克苏鲁布撞击年龄的争议，以及海洋领域大规模灭绝的性质。科学分析将由GK领导的国际团队进行，其中包括来自美国、法国、西班牙、德国和瑞士的科学家，将包括微体化石生物地层学（有孔虫、超微化石、孢粉）、层序地层学、矿物学、稳定同位素、微量元素、铂族元素和铱分析。这些研究将对K-T研究产生广泛的影响，并将为K-T过渡提供最完整和最全面的数据集之一，这要归功于这些沉积物中碳酸盐的未分类保存。