中酸性侵入岩包体的类型、鉴别、研究实例及其地质意义  

Enclaves in Mid-acid Intrusive Rocks: Types, Discriminations, Studied Examples and Its Geological Significance

作　　者：陈安国[1] 周珣若[2] 郑济林[3] 

机构地区：[1]河北地质学院 [2]中国地质大学 [3]南京地质矿产研究所

出　　处：《河北地质学院学报》1993年第4期345-356,共12页

摘　　要：中酸性侵入岩中的包体是其寄主岩浆生成、演化、定位、冷凝的忠实记录者,因而对它的研究是探讨岩石成因的重要途径之一。本文论述了中酸性岩中包体的研究现状。根据其来源可把包体划分为源区包体、同源包体及异源包体;根据其颜色可划分为暗色包体及浅色包体(包括富云包体)。对不同类型的包体,可按其形态、分布、结构构造、矿物成分、岩石化学、地球化学以及与寄主岩的关系等特征,予以鉴别。此外,对福建漳州复式岩体中的包体及浙江山头郑火山喷发中心侵入体中的包体特征和类型进行了研究和分析。最后,探讨了包体的地质意义。The enclaves in mid-acid intrusive rocks are reliable recorders about their host magma's forming, envduting, emplacing and cooling. Therefore, studying about it is one of the important ways to probe into the cause of the formation of rocks. This paper discusses the present situation of studying enclaves in mid-acid intru- sive rocks According to their resources, three types of enclaves have been classified. They are the resource-area enclave, the homoeogene enclave and the enallogene enclave According to their color, two types of enclaves have been classified, eg. dark-colored enclave and light-colored enclave (includes surmicaceous enclave). These different types of enclaves have been discriminated from their shape, distribution, fabric, mineral component, petrochemistry. geochemistry and relation to their host rocks. Besides, au- thors have studied and analysed the characteristics and types of enclaves in Zhangzhou granitic complex, Fujian province and Shantouzheng intrusive rock situated at the centre of volcanic eruption, Zhejiang province, respectively. At last, we probe into the important geological significance to study enclaves

关 键 词：侵入岩 矿物包体 类型 地质意义 

分 类 号：P588.12[天文地球—岩石学]