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

知识价值：该项目将收集样本，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短途旅行。PI希望收集样本，以确定在白垩纪长正时纪末期和长时纪31R下部之间的几次地磁倒转的位置。本次考察的白兰地湾地区是盆地内标定白垩纪长正时顶生物地层位置的最佳地点，是整个地质年标上最可靠的对比层位之一。更广泛的影响：白垩纪长正时线的顶部与南半球生物地层学没有适当的关联。确定这一事件的位置将是了解地质时间的重要补充。这次探险将为本科生提供机会。该项目基于与一位阿根廷科学家的富有成效的合作。

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.