Thermomechanical Development of the Internal Zone and Linkage with the Fold and Thrust Belt, Central Brooks Range, Alaska

阿拉斯加州中央布鲁克斯山脉内部带的热机械发展及其与褶皱和冲断带的联系

基本信息

  • 批准号:
    9405560
  • 负责人:
  • 金额:
    $ 19.55万
  • 依托单位:
  • 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:
    1994-07-01 至 1998-06-30
  • 项目状态:
    已结题

项目摘要

9405560 Patrick The Brooks Range of Alaska is a major collisional belt that contains a metamorphic core of high pressure/low temperature rocks. It is thought that these blueschist and greenschist facies rocks in the metamorphic core resulted form a mid-Mesozoic collision between a north-facing island arc and an older passive continental margin. The P.I.'s recent work in the area has shown that a proposed major thrust in the schist belt of the Central Brooks Range is in fact a stratigraphic contact and there is evidence to suggest that the bulk deformation was mostly contractional, rather than extensional as proposed by other workers. This project will examine the petrology, structure and geochronology of the transition between the internal metamorphic zone and the external zone of the Brooks Range. It will investigate the links between the internal and external zones and examine the contributions of extension and contraction during the collisional orogenic event. The results of this work will be broadly applicable to all major orogenic belts.
9405560帕特里克 阿拉斯加的布鲁克斯山脉是一个主要的碰撞带,其中包含一个高压/低温岩石的变质核。 认为变质核中的蓝片岩相和绿片岩相岩石是中中生代北向岛弧与古老的被动大陆边缘碰撞的产物。 私家侦探最近在该地区的工作表明,在中央布鲁克斯山脉的片岩带中提出的主要逆冲断层实际上是地层接触,并且有证据表明,整体变形主要是收缩的,而不是其他工作者提出的伸展变形。 该项目将研究布鲁克斯山脉内部变质带和外部变质带之间过渡的岩石学、结构和地质年代学。 它将研究内部和外部带之间的联系,并检查碰撞造山事件期间的拉伸和收缩的贡献。 这项工作的结果将广泛适用于所有主要造山带。

项目成果

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Brian Patrick其他文献

Brian Patrick的其他文献

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{{ truncateString('Brian Patrick', 18)}}的其他基金

COLLABORATIVE RESEARCH: Tectonothermal Evolution during Collisional Orogenesis: Blueschist to Granulite facies Metamorphism in the Kigluaik Mountains, Alaska
合作研究:碰撞造山作用期间的构造热演化:阿拉斯加基格鲁艾克山脉的蓝片岩到麻粒岩相变质作用
  • 批准号:
    9118394
  • 财政年份:
    1992
  • 资助金额:
    $ 19.55万
  • 项目类别:
    Standard Grant
Acquisition of a New Electron Microprobe
获得新的电子显微探针
  • 批准号:
    9204792
  • 财政年份:
    1992
  • 资助金额:
    $ 19.55万
  • 项目类别:
    Standard Grant
Structural and Metamorphic Evolution of the Walker Lee Lake Arrigetch Peaks Region, Central Brooks Range, Alaska
阿拉斯加布鲁克斯山脉中部沃克李湖阿里吉奇峰地区的结构和变质演化
  • 批准号:
    9196088
  • 财政年份:
    1991
  • 资助金额:
    $ 19.55万
  • 项目类别:
    Standard Grant
Structural and Metamorphic Evolution of the Walker Lee Lake Arrigetch Peaks Region, Central Brooks Range, Alaska
阿拉斯加布鲁克斯山脉中部沃克李湖阿里吉奇峰地区的结构和变质演化
  • 批准号:
    9004270
  • 财政年份:
    1990
  • 资助金额:
    $ 19.55万
  • 项目类别:
    Standard Grant
Petrologic Transects Through the Western Alps
穿过西阿尔卑斯山的岩石断面
  • 批准号:
    8702688
  • 财政年份:
    1987
  • 资助金额:
    $ 19.55万
  • 项目类别:
    Standard Grant

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