Petrological and Geochemical Analyses of Impact Breccias and Melts Recovered by the Chicxulub Scientific Drilling Project (CSDP), Mexico

对墨西哥希克苏鲁伯科学钻探项目 (CSDP) 回收的冲击角砾岩和熔体进行岩石学和地球化学分析

• 批准号: 0207658
• 负责人: David Kring
• 金额: $ 22.22万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-09-01 至 2005-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0207658&HistoricalAwards=false
• 关键词: Petrological; Geochemical; Analyses; Impact; Breccias

0207658KringThe International Continental Scientific Drilling Program (ICDP) is funding the drilling of a 2km hole in the Chicxulub impact crater on the Yucatan Peninsula in Mexico. NSF is funding US investigators to analyze core samples from the Chicxulub Scientific Drilling Project (CSDP). The Chicxulub crater is one of the world's largest impact craters and has been linked to the mass extnction event at the Cretaceous - Tertiary (K/T) boundary ~65 million years ago. As part of the CSDP Science Team, the PIs will provide a general description of the core for the broader scientific community, so that they can request appropriate samples for their studies. They will also provide an initial set of detailed analyses to characterize the impact lithologies in the core to better understand the formation of the Chicxulub crater, its thermal evolution as it cooled over a period of ~100,000 years, and the consequences it may have had for the environment. The project will include petrographic, chemical, and isotopic analyses of surviving target lithologies and shock-metamorphosed products of the impact event.***

0207658克林国际大陆科学钻探计划（ICDP）正在资助在墨西哥尤卡坦半岛的希克苏鲁布撞击坑中钻探一个2公里长的洞。 NSF正在资助美国调查人员分析来自希克苏鲁布科学钻探项目（CSDP）的岩心样本。 希克苏鲁布陨石坑是世界上最大的撞击坑之一，与6500万年前白垩纪-第三纪（K/T）边界的大规模扩张事件有关。 作为CSDP科学团队的一部分，PI将为更广泛的科学界提供核心的一般描述，以便他们可以为他们的研究要求适当的样本。 他们还将提供一套初步的详细分析，以确定撞击核心的岩性特征，从而更好地了解希克苏鲁布陨石坑的形成、它在约10万年的时间内冷却时的热演化以及它可能对环境产生的后果。 该项目将包括对幸存的目标岩性和撞击事件的冲击变质产物进行岩相学、化学和同位素分析。