| 摘要: |
| 人工重矿物组份的研究,在变质岩地区是一种经常使用的工作方法。因为它对变质岩地区的地层划分与对比、确定母岩区等是十分有效的。此外,在变质岩地区进行沉积相和再造古地理的研究中,它也有不可忽视的作用。这是由于变质岩区的许多原始沉积构造标志大多遭受改造和破坏。有些标志虽尚能辩认,但毕竟有其一定的局限性。而人工重矿物的研究,可以对沉积相观察和分析的结果进行检验和补充。西秦岭大陆边缘沉积学专题组,在对厂坝矿区王家山组的一套浅变质岩系沉积相观察中,利用了人工重砂组份的研究,三年来已取得了不少的成果。 |
| 关键词: |
| DOI： |
| 附件 |
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| 基金项目:地矿部秦巴项目资助 |
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| ARTIFICIAL HEAVY MINERAL ANALYSIS: APPLICATIONS TO THE STUDY OF SEDIMENTARY FACIES AND PALAEOGEOGRAPHY,WITH AN EXAMPLE FROM LOW-GRADE METAMORPHIC SUCCESSIONS OF THE WANGJIASHAN FORMATION IN THE CHANGBA DISTRICT,CHENGXIAN,GANSU |
| Cai Xiongfei, Huang Siji, Xiao Jindong, Qin Xiaoling |
| (China University of Geosciences, Wuhan) |
| Abstract: |
| This paper deals with the theory and method of artificial heavy mineral analysis in the lowgrade metamorphic successions. The study of the terrigenous clastic rocks in the low-grade metamorphic successions of the Wangjiashan Formation in the Changba district, Chengxian County, Gansu Province shows that artificial heavy mineral analysis will be of great significance in palaeogeographic reconstruction. |
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