检索结果-南通市图书馆

The recognizing of ca. 1.95 Ga tectono-thermal eventin Kong-ling nucleus and its significance for the evolution of Yangtze Block, South China

引用

Chinese Science Bulletin 2001年第4期46卷 326-329页

作者： LING Wenli GAO Shan ZHANG Benren ZHOU Lian XU Qidong Faculty of Earty Sciences China University of Geosciences Wuhan 430074China Department of Geology Northwest UniversityXi’an 710069China

Some 1.95 Ga metamorphism of high-grade Ar-chean rocks in Kongling terrain, continental nucleus of Yangtze Block, South China, are recognized by Sm-Nd dating. This event is further confirmed by the ages of single zircon SHRIMP U-Pb and K-Ar analyses of TTG and (or) paragneisses, and intrusions of potassic-granitic batholith in the region. The coincidence in period between the high-grade metamorphism in the Kongling area and the creation of major basement rocks of its neighborhoods of the Yangtze Block around the Kongling Archean nucleus makes it a favorable explanation for their tectonic connections that, in the whole Yangtze Block there was some tectono-thermal event of ca. 2.0-1.8 Ga, which resulted in the formation of unitive Yangtze basement.

关键词： Kongling high-grade metamorphic terrain tectono-thermal event Paleoproterozoic unitive basement.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

TERRESTRIAL HEAT FLOW ON THE QING-ZANG PLATEAU AND THE MODELING OF THE tectono-thermal EVOLUTION OF TERRANES IN ITS SOUTHERN PART

引用

Chinese Science Bulletin 1991年第17期36卷 1471-1476页

作者：沈显杰张文仁张菊明杨淑贞 Institute of Geology Academia Sinica Beijing 100029 PRC

Ⅰ. IMPLICATIONS OF THE INTEGRATED STUDY OF THE tectono-thermal EVOLUTIONRef. [1] reported 13 heat flow values along the profile from Yadong to the Qaidam Basin for the first time. After further systematic analysis and verification, these data together with the latitudes and longitudes of the heat flow sites, depth interval of linear sections, tem-

关键词： the Qing-Zang Plateau terrestrial heat flow tectono-thermal evolution modeling.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

^(40)Ar/^(39)Ar age evidence for Altyn fault tectonic activities in western China

引用

Chinese Science Bulletin 2003年第18期48卷 2024-2030页

作者： LIU Yongjiang1, J. Genser2, GE Xiaohong1, F. Neubauer2, G. Friedl2, CHANG Lihua1, REN Shoumai3 & R. Handler2 1. College of Earth Sciences, Jilin University, Changchun 130061, China 2. Institute of Geology and Paleontology, Salzburg University, Salzburg A-5020, Austrilia 3. Statigraphic Research Center for Oil and Natural Gas, Ministry of Land and Resources, Beijing 100034, China Correspondence should be addressed to Liu Yongjiang (e-mail: liuyj@ ***) College of Earth Sciences Jilin University Changchun China Institute of Geology and Paleontology Salzburg University Salzburg Austnlia Statigraphic Research Center for Oil and Natural Gas Ministry of Land and Resources Beijing China

Four 40Ar/39Ar age groups of mica, hornblende and K-feldspar were obtained from Proterozoic and early Paleozoic metamorphic rocks in the Aksay-Dangjin Pass area, western China. The samples away from the middle shear zone of the Altyn fault belt yield two plateau age groups in the range of 461—445.2 Ma and 414.9—342.8 Ma, respec-tively. They represent the tectono-thermal events that had been recorded in the rocks that were displaced by the Altyn strike-slip fault in late Ordovician-early Silurian and Devo-nian, respectively. These two age groups should be related to the closures of Northern and Southern Qilian Oceans. The deformed granitic gneiss from the northern belt gives a pla-teau age group of 178.4—137.5 Ma, which is interpreted as the active age of the Altyn fault in the middle-late Jurassic- early Cretaceous and should be related to the accretion of Lhasa block to the north. The sample from the middle shear zone of the Altyn fault belt yields two plateau ages of 36.4 and 26.3 Ma, respectively, suggesting the strike-slip move-ment with strong metamorphism at greenschist facies along the Altyn fault in the late Eocene. This event occurred in the most areas of the northern Tibet Plateau and should be in response in the north to the collision between Indian and Eurasian continents. The present study demonstrates that the Altyn fault is characterized by multiple pulse-style activi-ties under the tectonic setting of convergence between the Indian and Eurasian continents.

关键词： Altyn fault 40Ar/39Ar age tectono-thermal event western China

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：