Collaborative Research: SGER: Triple-dating (Pb-FT-He) of Antarctic Detritus and the Origin of the Gamburtsev Mountains

合作研究：SGER：南极碎屑的三次测年（Pb-FT-He）和甘布尔采夫山脉的起源

• 批准号: 0816934
• 负责人: Stuart Thomson
• 金额: $ 2.14万
• 依托单位: Yale University
• 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: 2008-02-15 至 2009-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0816934&HistoricalAwards=false
• 关键词: Collaborative; Research; SGER; Triple; dating

This Small Grant for Exploratory Research investigates the origin and evolution of the Gamburtsev subglacial mountains (GSM). These mountains are considered the nucleation point for Antarctica's largest ice sheets; however, being of indeterminate age, they may postdate ice sheet formation. As well, their formation could reflect tectonic events during the breakup of Gondwana. The project studies GSM-derived detrital zircon and apatite crystals from Prydz Bay obtained by the Ocean Drilling Program. Analytical work includes triple-dating thermochronometry by U/Pb, fission track, and (U/Th)/He methods. The combined technique offers insight into both high and low temperature processes, and is potentially sensitive to both the orogenic events and the subsequent cooling and exhumation due to erosion. In terms of broader impacts, this project supports research for a postdoctoral fellow and an

这一小笔探索性研究补助金调查了甘布尔采夫冰下山脉(GSM)的起源和演化。这些山脉被认为是南极洲最大冰盖的成核点；然而，由于年龄不确定，它们可能会推迟冰盖的形成。此外，它们的形成可能反映了冈瓦那解体期间的构造事件。该项目研究了从普里兹湾获得的来自GSM的碎屑锆石和磷灰石晶体，这些晶体是由海洋钻探计划获得的。分析工作包括U/铅、裂变径迹和(U/Th)/He方法的三重测年。这项综合技术提供了对高温和低温过程的洞察，并可能对造山事件以及随后由于侵蚀而导致的冷却和折返作用敏感。在更广泛的影响方面，该项目支持博士后研究员和