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: 0817163
• 负责人: Peter Reiners
• 金额: $ 2.01万
• 依托单位: University of Arizona
• 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=0817163&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

这个探索性研究的小额赠款调查了甘布尔采夫冰下山脉（GSM）的起源和演变。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，它们可能在冰盖形成之后。同时，它们的形成可能反映了冈瓦纳大陆解体期间的构造事件。该项目研究大洋钻探计划从普雷兹湾获得的GSM衍生碎屑锆石和磷灰石晶体。分析工作包括U/Pb、裂变径迹和（U/Th）/He方法的三重定年热计时法。结合技术提供了洞察高温和低温过程，是潜在的敏感性造山事件和随后的冷却和剥露由于侵蚀。就更广泛的影响而言，该项目支持一名博士后研究员和一名