检索结果-南通市图书馆

Biostratigraphy of Triassic Marine Reptiles in Southwest guizhou and Its Adjacent Area

Acta geologica Sinica(English Edition) 2001年第4期75卷 349-353页

作者： WANG Liting, LI Jinling, WANG Xinjin, LI Chun,WU Tianzhuang and LIU Jun bureau of geology and mineral exploration and development of guizhou provinceGuiyang 550004 Institute of Vertebrate Palaeontology and Palaeoanthropology,Chinese Academy of Sciences, Beijing 100044 guizhou Museum, Guiyang 550004 bur geol & mineral explorat & dev guizhou provinc Guiyang 550004 Peoples R China Chinese Acad Sci Inst Vertebrate Paleontol & Paleoanthropol Beijing 100044 Peoples R China guizhou Museum Guiyang 550004 Peoples R China

This paper briefly reviews the Triassic marine reptile fossils in guizhou province, especially the fossils that have been recently found in the Guanling area. Based on three sections at Guanling and Xingyi, guizhou province and Luoping, Yunnan province, four horizons with vertebrate fossils are recognized in the Middle and Upper Triassic of this area; They are from bottom to top: Member I and Member II of the Guanling Formation, and the Zhuganpo Member and the Wayao Member of the Falang Formation.

关键词： Southwest guizhou Middle and Upper Triassic marine reptiles Guanling Formation Falang Formation

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

Particles carried by ascending gas flow at the Tongchanghe copper mine,guizhou province,China

引用

Science China Earth Sciences 2010年第11期53卷 1647-1654页

作者： Cao JianJin Liu Chang Xiong ZhiHua Qin TingRong Sun Yat Sen Univ Dept Earth Sci Guangzhou 510275 Guangdong Peoples R China guizhou Nonferrous Met geol explorat bur Gen Team 2 Liupanshui 553004 Peoples R China

We collected and analyzed, using transmission electron microscopy, the particles carried by ascending gas flow in soil above the concealed orebody of the Tongchanghe copper mine, guizhou province. Particles of native copper, native copper-iron alloy, and native chromium-iron-copper alloy particles in the ascending gas flow were first discovered. Commonly, they were aggre- gations of relatively small particles. Individual particles within aggregations were subcircular, elliptical, regularly polygonal, or elongate and from 5 to 40 nm in size. The aggregations were subcircular or elliptical and 20-150 nm in size. Chloride, oxide, sulfate, and hydroxide particles containing ore-forming metals in the ascending gas flow were also discovered. The elements of the particles were commonly in a high valence state, suggesting that they were formed in a near-surface oxidizing environment. Discovery of the particles extracted from the ascending gas flow above the Tongchanghe copper mineprovided a powerful tool for exploration for deep concealed orebodies. Our study also showed that native copper, native copper-iron alloys, native chromium-iron-copper alloys, as well as chloride, oxide, sulfate, and hydroxide compounds containing ore-forming metals can be transported in particle form by ascending gas flow below the Earth's surface.

关键词： Tongchanghe copper mine ascending gas flow particles prospecting migration

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

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

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：