| 电子探针微区紫外阴极荧光分析系统及在沉积碎屑岩分析中的应用 |
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| 引用本文： | 冻能松,杨勇.电子探针微区紫外阴极荧光分析系统及在沉积碎屑岩分析中的应用[J].地球科学,2003,28(3):357-360. |
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| 作者姓名： | 冻能松 杨勇 |
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| 作者单位： | [1]中国地质大学地球科学学院，湖北武汉430074 [2]华中科技大学激光院，湖北武汉430074 |
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| 基金项目： | 国家青年自然科学基金项目 (No .495 0 30 46 ) . |
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| 摘 要： | 在JCXA—733电子探针上采用一种实用的微区紫外一可见阴极荧光的探测方案，可以分析样品表面微区的不可见和可见的荧光．荧光的波长和强度特性与物质的成分、结构、缺陷，物质的形成条件、经历、所处环境条件等密切相关．相对于常规的可见阴极荧光测试技术，探测紫外和红外阴极荧光可以在更宽的波段上获取更多更新的样品内在信息．用此方法对河北唐山石英砂岩及其微小次生加大边进行阴极荧光分析，发现它们具有不同的紫外荧光特征，还有对应波长为287nm的辐射损伤色心，由此可以推测至少有两期胶结作用，且石英碎屑来源复杂．这为分析胶结作用期次和碎屑物物源提供了新的技术方法，对于沉积盆地分析和油气储集具有重要的实用意义．
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| 关 键 词： | 电子探针 阴极荧光 形成条件 胶结作用期次 碎屑物物源 沉积盆地 油气储集 沉积碎屑岩 |
| 文章编号： | 1000-2383(2003)03-0357-04 |
An EPMA Ultraviolet Cathodoluminescence Micro-Area Measuring System and Its Application to Petrogenetic Analysis for Clasolites |
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| YANG Yong ,CHEN Neng-song.An EPMA Ultraviolet Cathodoluminescence Micro-Area Measuring System and Its Application to Petrogenetic Analysis for Clasolites[J].Earth Science-Journal of China University of Geosciences,2003,28(3):357-360. |
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| Authors: | YANG Yong CHEN Neng-song |
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| Institution: | YANG Yong 1,2,CHEN Neng-song2 |
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| Abstract: | A practical detection scheme with JCXA-733 EPMA-based micro-ultraviolet visible cathodoluminescence has been constructed to analyze both invisible and visible luminescence phenomena for the micro-area surface of solid samples. The wavelength and intensity of the luminescence depend largely on composition, crystal structure and crystal defection of the materials, and also on the growth conditions, growth processes and the environmental conditions where occur the materials. Ultraviolet and ultra-infrared detection of samples will yield more inherent information over broad waveband. Application of this method to the analysis of the source for quartz detritus and of the generation relation between micro rims of secondary enlargement quartz in glauconite-bearing quartz sandstone from Tangshan region, Hebei Province, reveals both the distinct features of ultraviolet luminescence and the radiate-damnification-induced color center at 287 nm wavelength. Hence, it can be deduced that this sandstone experienced two generations of cementation and that its quartz detritus were derived from complex sources. This technique provides a new tool for the investigation into the detritus sources and cementation histories for clasonites and shows a great significance for the analysis of sedimentary basins, oil and gas reservoir. |
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| Keywords: | cathodoluminescence (CL) micro-area analysis ultraviolet (UV) spectrum |
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