摘要
滇东南锡矿带是燕山构造-岩浆旋回为主体形成的构造-岩浆-锡矿带。通过滇东南锡矿带矿床时空分布特征的研究,揭示了锡矿分布模式。结合锡矿床产出地质环境、矿物共生组合、矿床特征、锡的赋存状态及其他有关资料,拟建了以花岗岩作用为成矿根本因素的“岩、位、带、层”成矿模式。
The tin ore belt of southeast Yunnan is a tectonicmagmatic-tin metallization belt formed in the Yanshan tectonic cycle. The tin belt as a unique system trends in NWW direction and acrosses a number of tectonic elements.The formation of tin ore deposit was characterized by the succession of polyphase mineralization and the enrichment was reached by the compounding and superposing metallogensis in Late Yanshanian. In later metallogeni period the tin ore formation was characterized by cassiterite-sulfide type. In space, the tin-polymetal metallized area is consistent with folding-uplift structure, geophysical and geochemical anomalies and the ring image shown by remote-sensing.A metallogenic model is suggested to indicate the multisource and the processes of mobilization, transpotation, precipitation and oreformation. In this model, it is also suggested that the intrusion of the granite is a main control in the ore-formation.
出处
《地质科学》
CAS
CSCD
北大核心
1990年第2期137-148,共12页
Chinese Journal of Geology(Scientia Geologica Sinica)
关键词
锡矿
时空分布
成矿模式
tin-ore belt of southeast Yunnan, timespace distribution, granite, metallo genic model
