A New Eclogite Province in the Caledonides of North-East Greenland-Petrology, Geochronology, and Tectonic Implications

格陵兰岛东北部喀里多尼德山脉的一个新榴辉岩省-岩石学、地质年代学和构造意义

• 批准号: 9508218
• 负责人: Jane Gilotti
• 金额: $ 9万
• 依托单位: The University of the State of New York
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-07-01 至 1998-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9508218&HistoricalAwards=false
• 关键词: New; Eclogite; Province; Caledonides; North

Most current tectonic models for the Arctic Caledonides show Laurentia abducted onto Baltica, producing high-pressure regional metamorphism, now exposed in the Scandinavian Caledonides. East Greenland represents upper plate positions in these models, and are not expected to contain high pressure tracts. However, early reports of eclogite in east Greenland have been confirmed and this project will focus on determining the extent, geometry and timing of these eclogite rocks and will attempt to reconcile this occurrence with tectonic models for the Caledonides. Results are expected to make important mmdifications to the structural history and evolution of this orogen.

目前大多数北极加里多尼德山脉的构造模型显示，劳伦蒂亚被绑架到波罗的海，产生了高压区域变质作用，现在暴露在斯堪的纳维亚加里多尼德山脉。东格陵兰岛代表了这些模型中的上板块位置，预计不会包含高压区域。然而，格陵兰东部榴辉岩的早期报道已经得到证实，该项目将重点确定这些榴辉岩的范围、几何形状和时间，并试图将这一事件与加里多尼德山脉的构造模型相协调。这一结果有望对该造山带的构造历史和演化作出重要的贡献。