1 Introduction Sanjiang tectonic-magma belt is one of the most potential resources’metallogenic belts in China.Cenozoic alkali-rich porphyry-type gold polymetallic mineralization system is a significant characteristi...1 Introduction Sanjiang tectonic-magma belt is one of the most potential resources’metallogenic belts in China.Cenozoic alkali-rich porphyry-type gold polymetallic mineralization system is a significant characteristic of thisbelt.Chenghai-Binchuan tectonic belt,located in the western margin of the Yangtze block,is an important part展开更多
In this paper the fine structure of crust mantle transition zone in Western Yunnan Province is analysed and discussed based on the reflection phases from Moho discontinuity in Project Western Yunnan 86～87. ...In this paper the fine structure of crust mantle transition zone in Western Yunnan Province is analysed and discussed based on the reflection phases from Moho discontinuity in Project Western Yunnan 86～87. It shows that in two points: in the north 27.64 km from shot point Jinggu and south 58.74 km from shot point Zhiti, there are transition zones of group of thin layers with inverse velocity.These two reflection points are both situated in the lower velocity anomaly zone in the top of upper mantle. The crust of this region is more seismicity. Maybe the unusual structure of this transition zone is related with the characteristics of this region. This paper discusses the possible geological interpretation model for this transition zone, and also makes suggestion about its application in earthquake prediction.展开更多
Objective To analyze the predictors of the abundance of small mammals’parasitic fleas in households of Western Yunnan Province.Methods Eight hundred households of 40 natural villages from 10 counties in Western Yunna...Objective To analyze the predictors of the abundance of small mammals’parasitic fleas in households of Western Yunnan Province.Methods Eight hundred households of 40 natural villages from 10 counties in Western Yunnan Province were selected as study subjects.Five live-traps were placed in each household for展开更多
基金financially supported by the geological survey program of China Geological Survey(1212011120607)the basic research program of Yunnan Nonferrous Metals Geological Bureau(20131300001)
文摘1 Introduction Sanjiang tectonic-magma belt is one of the most potential resources’metallogenic belts in China.Cenozoic alkali-rich porphyry-type gold polymetallic mineralization system is a significant characteristic of thisbelt.Chenghai-Binchuan tectonic belt,located in the western margin of the Yangtze block,is an important part
文摘In this paper the fine structure of crust mantle transition zone in Western Yunnan Province is analysed and discussed based on the reflection phases from Moho discontinuity in Project Western Yunnan 86～87. It shows that in two points: in the north 27.64 km from shot point Jinggu and south 58.74 km from shot point Zhiti, there are transition zones of group of thin layers with inverse velocity.These two reflection points are both situated in the lower velocity anomaly zone in the top of upper mantle. The crust of this region is more seismicity. Maybe the unusual structure of this transition zone is related with the characteristics of this region. This paper discusses the possible geological interpretation model for this transition zone, and also makes suggestion about its application in earthquake prediction.
文摘Objective To analyze the predictors of the abundance of small mammals’parasitic fleas in households of Western Yunnan Province.Methods Eight hundred households of 40 natural villages from 10 counties in Western Yunnan Province were selected as study subjects.Five live-traps were placed in each household for
