课题基金 / 基金详情

Deformation and the Mechanisms of Ar Loss in Mylonite Zones

Deformation and the Mechanisms of Ar Loss in Mylonite Zones
糜棱岩带变形及Ar损失机制
批准号:
9506063
负责人:
Kip Hodges
金额:
$12.56万
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
1995
资助国家:
美国
项目状态:
已结题
起止时间:
1995-07-01 至 1998-06-30

项目摘要

项目成果

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中文摘要
翻译
构造研究的基本目标之一是确定地质构造和相关变形构造的形成年代。该项目将尝试将氩测年技术应用于糜棱岩,糜棱岩的年龄受到独立手段的严格限制。工作涉及激光微探针40Ar/39Ar年龄测定和标准电子微探针和TEM方法。研究结果有望更好地理解与糜棱化有关的结构缺陷发育和再结晶对变形岩石中氩损失机制的影响。这些信息对于开发一种可靠和有用的糜棱岩地质年代测定方法是必需的。
英文摘要
One of the fundamental goals of tectonic research is to age date the formation of geologic structures and associated deformation fabrics. This project will attempt to apply the argon dating technique to a mylonite, whose age is tightly constrained by independent means. The work involves laser microprobe 40Ar/39Ar age determinations and standard electron microprobe and TEM methods. Results are expected to provide a better understanding of the way in which structural defect development and recrystalization associated with mylonitization affects Argon loss mechanisms in deformed rocks. Such information is required to develop a reliable and useful geochronometric method for mylonite events.
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