Study on a Terrestrial Permian-Triassic Boundary Section-Zhejue Section, Weining County, Guizhou

来源 :Journal of China University of Geosciences | 被引量 : 0次 | 上传用户:xiaoxiao1946
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The Zhejue Section is an excellent terrestrial Permian Triassic boundary (TPTB) section not only for its convenient accessibility and good outcrop, but also for its abundant fossils. In addition, there are two claystone beds that were formed by events across the Permian Triassic boundary (PTB) at this section. The claystones provide a bridge for high resolution correlation between marine and terrestrial PTBs. Another advantage is that the PTB at the Zhejue Section can be correlated with that of littoral and neritic facies by tracing westwards. Synthesized stratigraphic studies, including biostratigraphy, eventostratigraphy (susceptibilities and carbon isotopes across the TPTB, and microspherules found in the boundary claystones) and sequence stratigraphy, are carried out at this section. The Zhejue Section is an excellent terrestrial Permian Triassic boundary (TPTB) section not only for its convenient accessibility and good outcrop, but also for its abundant fossils. In addition, there are two claystone beds that were formed by events across the Permian Triassic boundary ( PTB) at this section. The claystones provide a bridge for high resolution correlation between marine and terrestrial PTBs. Another advantage is that PTB at the Zhejue Section can be correlated with that of littoral and neritic facies by tracing westwards. Synthesized stratigraphic studies, including biostratigraphy, eventostratigraphy (susceptibilities and carbon isotopes across the TPTB, and microspherules found in the boundary claystones) and sequence stratigraphy, are carrying out at this section.
其他文献
我县地处里下河下游,地势低洼,易涝易溃。70年代和80年代初兴建的500多座轴流泵站,基本上都是用的20ZLB-70型泵,由于扬程低(都在2.0以下),泵站装置效率普遍不高,一般在35%~40%
1、罗马尼亚近年来建筑的土石坝罗马尼亚于1953~1982年期间,曾修建了综合利用的大坝达101座,其中大多数为土石坝.兹举出堆石坝8座,其中4座为混凝土面板坝,4座为不透水心墙坝.
小型水电站在经济和技术方面的优点,常不被人们真正了解,其原因是评价方法有时侯不恰当。作者提出一种更好的评价小水电价值的方法。小型水电站和大型水电站装机容量之间的
AIM:To study the expression of survivin,an inhibitor ofapoptosis protein,in human gastric carcinomas and gastriccarcinoma models of rats.METHODS:With the metho
李四光地质科学荣誉奖获得者 :叶连俊 中国科学院地质与地球物理研究所研究员、中国科学院院士杨 起 中国地质大学 (北京 )教授、中国科学院院士张彭熹 中国科学院青海盐
Flash动画制作是一门以上机操作为主、实践性很强的一门学科,是中职学校的主干课程是职业中专生源文化基础相对薄弱,在教学中采用异质分组合作学习,解决了大班额教学困难的情
在80年代后期的“泡沫经济”以前,日本的电动工具生产大约有60%面向出口,其余40%满足国内消费,然而随着经济泡沫的破裂,出口所占比重持续下降,到1994年,出口仅占生产的40%,国内
班级管理是学校管理的基础,班主任工作的目的就是要全面贯彻党和国家的教育方针,贯彻落实学校的工作计划和教学计划,加强对学生的管理,创建和谐的班集体;充分调动科任教师的工作积极性和学生的学习积极性,培养学生良好的品德,营造良好的班风、教风和学风;全面推进素质教育,全面提高教育质量,把学生培养成为社会主义现代化建设的合格者和接班人。因此,班主任工作在学校工作中起着举足轻重的作用。在长期的班主任工作中,我
With wax content of 1.62%, heavy oil has been produced from the sandstone reservoirs of Neogene Guantao Formation (Ng1m). In the GC and GC-MS RIC profiles of it
CAD(英文Computer Assistant Design的缩写,意为计算机辅助设计)技术是综合了计算机软/硬件的最新成就,即图形技术、数据库技术、智能摸拟技术,而形成的现代化设计工具。它