The metallogenic characteristics of the Wushan deposit are discussed based on its regional geology, mine geology, mineralization
temperature and stable isotopic compositions. The deposit is closely related to granodiorite both spatially and genetically,
thus belonging to intrusive massive sulphidr deposits, which art. different in metallogenic features from that of the volcanogenic
massive sulphidr deposits. 相似文献
To monitor the activity of the Huangzhuang-Gaoliying and Babaoshan faults in their middle sections,a network for leveling,short-side ranging,and gravity and geomagnetic observations at the same time and at the same station was set up.By this network,the time and space distribution and the relation between different observations have been studied.It is considered that the Huangzhuang-Gaoliying fault is in a locked state for rapid strain energy accumulation,while the Babaoshan fault is in a state of creep or unrestrained motion.To do comprehensive monitoring of fault activity by making deformation,gravity,and geomagnetic observations at the same time and at the same station,it would be possible to acquire the microscopic state of fault activity and the data of earthquake preparation; such an approach is considered worth popularizing. 相似文献
Paleomagnetic samples were collected from four localities located in the southern rim of the Tarim basin. The samples were taken from volcanic rocks erupted between Jurassic and Quaternary. Detailed analysis of all samples has been carried out with progressive thermal demagnetization. A characteristic remanence (ChRM) with higher unblocking temperature has been isolated from all samples. The pole position from the middle Jurassic is at 52.5°N, 187.9°E(dp = 3.7°,dm =6.5°); the directions of the ChRM of Cretaceous correspond to a paleopole at 69.7°N, 211.6°E (dp = 9.8°,dm = 15.9°); the Quaternary pole from the Pulu site is at 79. 9°N, 183.1°E(dp = 1.6°.dm =2.4°). On the basis of these new paleomagnetic data, tectonic evolution of Tarim block is presented.