The Yunkai Area is located at the southern South China Block and is part of the Qinzhou Bay-Hangzhou Bay Metallogenic Belt, which is a famous polymetallic mineralization belt. The Xinhua Pb–Zn–(Ag)deposit is located...The Yunkai Area is located at the southern South China Block and is part of the Qinzhou Bay-Hangzhou Bay Metallogenic Belt, which is a famous polymetallic mineralization belt. The Xinhua Pb–Zn–(Ag)deposit is located in the western part of Yunkai Area, with an abundance of Pubei batholiths. Zircon U–Pb geochronology of Pubei batholiths shows that crystallization age ranges from 251.9 ± 2.2 to 244.3 ± 1.8 Ma, thus belonging to Indosinian orogeny. Geochemistry and Sr isotopic compositions of the Pubei batholiths show that it is derived from the partial melting of large scale crustal melting during the stage of exhumation and uplifting of the lower-middle crust. In addition, strontium isotope of sphalerite from the Xinhua Pb–Zn–(Ag) deposit, has limited ranges in ^(87)Rb/^(86)Sr and ^(87)Sr/^(86)Sr, ranging from 0.4077 to 1.0449, and 0.718720 to 0.725245, respectively. The initial ^(87)Sr/^(86)Sr ratios of sphalerite ranges between 0.718720 and 0.725245, which is higher than that of upper continental crust and lower than that of the Pubei batholiths, illustrating the fluid might be derived from the mixing of Pubei pluton and upper continental crust.展开更多
ln the research, problems of land use and management in development zone were concluded, and analysis was made on the causes in order to draw lessons from land use and management in development zones. Furthermore, enl...ln the research, problems of land use and management in development zone were concluded, and analysis was made on the causes in order to draw lessons from land use and management in development zones. Furthermore, enlight-enment to implementation of ＂construction up to the mountains＂ strategy in the ar-eas similar to Yunnan was explored, which provides references for developing of＂construction up to the mountains＂ strategy and protecting of highly-qualified cultivat-ed lands in dam regions.展开更多
The purposes of this research were： （1） to create a training package to prepare secondary school students in northeastern of Thailand toward ASEAN （Association of Southeast Asian Nations） Community; （2） to comp...The purposes of this research were： （1） to create a training package to prepare secondary school students in northeastern of Thailand toward ASEAN （Association of Southeast Asian Nations） Community; （2） to compare the knowledge of secondary school students toward ASEAN before and after use training package; and （3） the expectations of the students in the northeast of their own preparation for the ASEAN community. Experimental research was used in this research. The subject was including 2,000 students who were randomly divided into groups of seven provinces. The statistics used in data analysis were percentage, average, standard deviation, and T-test. The research results showed that： （1） a training package to prepare secondary school students in northeastern of Thailand toward ASEAN Community, the effectiveness index （E.I.） was .57, according to the established criteria; （2） a comparison of pretest and post-test results found the use of cognitive training may vary, statistically significant at the .05 level; （3） an expectation of the secondary school students in the preparation of role into ASEAN Community found that the students who participated in a concept reflect that the knowledge and attitudes to prepare themselves for the ASEAN community.展开更多
基金supported by grants by the National Natural Science Foundation of China (No.41272097)the China Geological Survey Project (No.12120114016601)+1 种基金the Special Fund for Basic Scientific Research of Central Colleges, China University of Geosciences (Wuhan) (No.CUG120702)the Teaching Laboratory Foundation of China University of Geosciences (Wuhan) (No.SKJ2013085,SKJ2014010)
文摘The Yunkai Area is located at the southern South China Block and is part of the Qinzhou Bay-Hangzhou Bay Metallogenic Belt, which is a famous polymetallic mineralization belt. The Xinhua Pb–Zn–(Ag)deposit is located in the western part of Yunkai Area, with an abundance of Pubei batholiths. Zircon U–Pb geochronology of Pubei batholiths shows that crystallization age ranges from 251.9 ± 2.2 to 244.3 ± 1.8 Ma, thus belonging to Indosinian orogeny. Geochemistry and Sr isotopic compositions of the Pubei batholiths show that it is derived from the partial melting of large scale crustal melting during the stage of exhumation and uplifting of the lower-middle crust. In addition, strontium isotope of sphalerite from the Xinhua Pb–Zn–(Ag) deposit, has limited ranges in ^(87)Rb/^(86)Sr and ^(87)Sr/^(86)Sr, ranging from 0.4077 to 1.0449, and 0.718720 to 0.725245, respectively. The initial ^(87)Sr/^(86)Sr ratios of sphalerite ranges between 0.718720 and 0.725245, which is higher than that of upper continental crust and lower than that of the Pubei batholiths, illustrating the fluid might be derived from the mixing of Pubei pluton and upper continental crust.
基金Supported by National Natural Science Foundation of China(41261018)~~
文摘ln the research, problems of land use and management in development zone were concluded, and analysis was made on the causes in order to draw lessons from land use and management in development zones. Furthermore, enlight-enment to implementation of ＂construction up to the mountains＂ strategy in the ar-eas similar to Yunnan was explored, which provides references for developing of＂construction up to the mountains＂ strategy and protecting of highly-qualified cultivat-ed lands in dam regions.
文摘The purposes of this research were： （1） to create a training package to prepare secondary school students in northeastern of Thailand toward ASEAN （Association of Southeast Asian Nations） Community; （2） to compare the knowledge of secondary school students toward ASEAN before and after use training package; and （3） the expectations of the students in the northeast of their own preparation for the ASEAN community. Experimental research was used in this research. The subject was including 2,000 students who were randomly divided into groups of seven provinces. The statistics used in data analysis were percentage, average, standard deviation, and T-test. The research results showed that： （1） a training package to prepare secondary school students in northeastern of Thailand toward ASEAN Community, the effectiveness index （E.I.） was .57, according to the established criteria; （2） a comparison of pretest and post-test results found the use of cognitive training may vary, statistically significant at the .05 level; （3） an expectation of the secondary school students in the preparation of role into ASEAN Community found that the students who participated in a concept reflect that the knowledge and attitudes to prepare themselves for the ASEAN community.
