Thermochronologic Evolution of the High-Pressure MetamorphicTerranes and Granodiorities of New Caledonia

新喀里多尼亚高压变质岩和花岗岩的热年代学演化

• 批准号: 9316418
• 负责人: Suzanne Baldwin
• 金额: $ 12.02万
• 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: 1994
• 资助国家: 美国
• 起止时间: 1994-02-15 至 1998-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9316418&HistoricalAwards=false
• 关键词: Thermochronologic; Evolution; Pressure; MetamorphicTerranes; Granodiorities

9316418 Baldwin New Caledonia occurs as a mainly continental fragment on the Norfolk Ridge System in the southwest Pacific, and records deformation between ocean crust of the Pacific plate and continental crust of the Indian plate subsequent to the break-up of the eastern margin of Gondwana. The high-pressure metamorphic belt of New Caledonia is one of the youngest blueschist and eclogite belts on earth. This study is part of a large international project on New Caledonia, and involves an age dating program on these rocks. Results will provide age constraints on various events in the tectonic evolution of New Caledonia and its relationship to New Zealand and Australia along the eastern margin of Gondwana. ***

9316418鲍德温 新喀里多尼亚是西南太平洋诺福克海岭系上的一个主要大陆板块，记录了冈瓦纳大陆东缘裂解后太平洋板块洋壳与印度板块陆壳之间的变形。 新喀里多尼亚高压变质带是地球上最年轻的蓝片岩和榴辉岩带之一。 这项研究是一个关于新喀里多尼亚的大型国际项目的一部分，涉及这些岩石的年龄测定程序。 研究结果将为新喀里多尼亚构造演化中的各种事件及其与冈瓦纳大陆东缘沿着新西兰和澳大利亚的关系提供年龄限制。 ***