Magnetostratigraphy of Cretaceous Sediments in the James Ross Island Basin, Antarctica

南极洲詹姆斯罗斯岛盆地白垩纪沉积物的磁性地层学

• 批准号: 1303896
• 负责人: Joseph Kirschvink
• 金额: $ 5.62万
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-01-15 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1303896&HistoricalAwards=false
• 关键词: Magnetostratigraphy; Cretaceous; Sediments; James; Ross

Intellectual Merit: The PI will collect samples to extend the magneto-stratigraphic record of late Cretaceous sediments of the James Ross Basin, Antarctica. RAPID support will allow him to take advantage of an invitation from the Instituto Antartico Argentino (IAA) to participate on an excursion to James Ross Island in the Antarctic Peninsula. The PI hopes to collect samples that will refine the position of several geomagnetic reversals between the end of the Cretaceous long normal Chron and the lower portion of Chron 31R. The Brandy Bay locality targeted by this expedition is the best place in the basin for calibrating the biostratigraphic position of the top of the Cretaceous Long Normal Chron, which is one of the most reliable correlation horizons in the entire Geological Time Scale.Broader impacts: The top of the Cretaceous long normal Chron is not properly correlated to southern hemisphere biostratigraphy. Locating this event will be a major addition to understanding geological time. This expedition will provide opportunities for an undergraduate student. This project is based on a productive collaboration with an Argentine scientist.

智力价值：PI 将收集样本以扩展南极洲詹姆斯罗斯盆地晚白垩世沉积物的磁性地层记录。 RAPID 的支持将使他能够利用阿根廷南极研究所 (IAA) 的邀请，参加南极半岛詹姆斯罗斯岛的游览。 PI 希望收集样本，以精确确定白垩纪长正常 Chron 末端和 Chron 31R 下部之间几次地磁反转的位置。本次考察的布兰迪湾地区是盆地内校准白垩纪长正常年代顶部生物地层位置的最佳地点，也是整个地质时间尺度中最可靠的相关层位之一。 更广泛的影响：白垩纪长正常年代的顶部与南半球生物地层学没有正确的相关性。确定这一事件的位置将有助于了解地质时间。这次探险将为本科生提供机会。该项目基于与阿根廷科学家的富有成效的合作。