Fluid inclusion petrography

Fluid inclusion petrography
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DOI:
10.1016/s0024-4937(00)00037-2
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发表时间:
2001
期刊:
影响因子:
3.5
通讯作者:
A. Kerkhof;U. Hein
A. Kerkhof;U. Hein
中科院分区:
地球科学2区
文献类型:
--
作者:
A. Kerkhof;U. Hein

文献摘要

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提出了流体包裹体研究的程序,重点是选择流体包裹体进行详细(显微测温和光谱)分析的标准。概述了单晶体和块状岩石中流体包裹体的描述性和成因分类,旨在进一步区分常用术语“原生”和“次生”流体包裹体。解释了流体包裹体改性的一些原理。使用光学高功率 CL 显微镜和配备 CL 探测器的电子显微探针对石英进行阴极发光 (CL) 研究,对“流体岩相学”有重要帮助。 CL 纹理可细分为原生纹理、生长纹理和各种次生微观纹理,这些纹理部分是由流体包裹体引起的。后者分为指示局部较低晶体顺序(增加缺陷结构)的纹理和指示局部石英愈合(减少缺陷结构)的微观纹理。显示流体包裹体与宿主矿物之间的成因关系的微观结构提供了有关流体包裹体可能的截留后变化的信息,从而证明了它们的地质相关性。
A procedure of fluid inclusion studies is proposed with emphasis on the criteria of selecting fluid inclusions for detailed (microthermometry and spectroscopic) analysis. An overview of descriptive and genetic classifications of fluid inclusions in single crystals and in massive rocks is given with the intention of further differentiating the commonly used terms ‘primary’ and ‘secondary’ fluid inclusions. Some principles of fluid inclusion modification are explained. Cathodoluminescence (CL) studies of quartz with the optical high-power CL-microscope and the electron microprobe provided with a CL detector are an important help in ‘fluid petrography’. CL textures are subdivided in primary, growth textures and a wide variety of secondary microtextures, which are in part induced by fluid inclusions. The latter is grouped in textures indicative of local lower crystal order (increasing defect structures) and microtextures indicative of local quartz healing (reduction of the defect structures). Microtextures showing the genetic relationship between fluid inclusions and the host mineral provide information about the possible post-entrapment changes of fluid inclusions and therewith testify their geological relevance.