广西上二叠统层序地层格架

在详细研究广西上二叠统碳酸盐岩、硅质岩和陆源碎屑岩沉积体系的基础上，通过高分辨等时地层界面的追踪和层序地层对比，建立了不同相区沉积体系在等时地层格架内的空间配置，进而识别出１个二级层序和５个三级层序，每个层序的形成都同时受到全球海平面升降，盆地基底沉降、沉积物充填的控制，在层序发展的不同阶段，受控的主导因素有别，从而形成不同样式的层序构成。     

非热带浅海碳酸盐岩研究的新进展

本文从碳酸盐岩中颗粒、灰泥成因、矿物学、地球化学及沉积构造几方面,通过与(亚)热带碳酸盐岩比较,介绍了国外特别是80年代以来对非热带碳酸盐岩及沉积物的研究成果,并对一些沉积特点在判别非热带碳酸盐岩中的作用进行了讨论。     

关于glendonite等词的汉译名及其它

关于ｇｌｅｎｄｏｎｉｔｅ等词的汉译名及其它颜佳新（中国地质大学，武汉４３００７４）在《英汉地质词典》中，ｇｌｅｎｄｏｎｉｔｅ，ｔｈｉｎｏｌｉｔｅ，ｔｈｉｎｏｌｉｈｃｆｕｆａ，ｊａｒｒｏｗｉｔｅ和Ｐｓｅｕａｏａｒｙｌｕｓｓｉｔｅ五词分别被译为“钙芒硝状...     

应用化石群落生态学研究分析黄石地区栖霞组沉积环境

湖北省黄石地区栖霞组出露良好，化石丰富，是化石古生态分析的理想地区。通过化石统计、化石形态功能分析、埋藏学分析和围岩沉积学研究，本区栖霞组中共识别出五个化石群落（从下往上）：①Ｃｒｕｒｉｔｈｙｒｉｓ－Ｏｒｔｈｏｔｅｔｉｎａ（ＣＯ）群落；②Ｓｃｈｕｃｈｅｒｔｅｌｌａ－Ｓｐｏｎｇｅ（ＳＳ）群落；③Ｈａｙａｓａｋａｉａ（Ｈ）群落。④Ｓｐｏｕｓｅ（Ｓ）群落和⑤Ｔｙｌｏｐｌｅｃｔａ－Ｐａｒａｃａｎｉｎｉａ（ＴＰ）群落。化石群落及岩相特点在纵向上和横向上的一致变化，表明本区栖霞组形成于一南高北低的缓坡沉积环境，整个栖霞组为一大的海侵序列构成，各种化石群落和岩相的发展演化均是在这一缓坡沉积背景下形成的。     

造山带沉积地质学研究的新进展

造山带沉积地质学是造山带研究的一个重要方面。随着板块学说和活动论思想在大陆造山带研究中的应用和深化，造山带沉积地质学领域出现了政府和方法论上的重大革新和突破。本文从造山带非史密斯地层学、沉积盆地分析、大地构造相分析、造山带层序地层学、造山带古海洋学、造山带动力沉积学及造山带沉积地质研究内容和技术路线等诸方面扼要介绍了造山带沉积地质学的新进展。     

Sequence Stratigraphic Delineation and Correlation of the Dongying Formation in the Nearshore and Adjacent Sea Areas, Bohai Bay Basin

Based on the analysis of well logs, seismic data, core studies, the Dongying (东营) into three third-order sequences from base to top: namely, sequences SQ1, SQ2 and SQ3. The three sequences have different wireline (SP) log responses, showing triple-section characteristics with SQ1 being characterized by primarily flat baseline with intercalation of relatively low spontaneous potential, SQ2 generally exhibiting weak or moderate amplitude spontaneous potential with finger-shaped peaks, and SQ3 having relatively high spontaneous potential with funnel-shaped log curves. On the basis of the triple-section characteristics, the stratigraphic sequences can be correlated consistently throughout the entire study area. A stratigraphic and sedimentary model for sequences SQ1 to SQ3 of the Dongying Formation in the study area has been proposed. The accommodation space change in the two sides of the asymmetrical basin was examined and the asymmetrical basin has the feature of the asymmetrical accommodation space change. The asymmetrical physiography is a vital factor to influence the accommodation changes in additional to the lake level change, tectonism and sediment supply. This may have important implications to similar basins in other parts of China or elsewhere.     

Depositional and Ecological Features of Permian Oxygen Deficient Deposits at Shangsi Section, Northeast Sichuan, China

Because oxygen deficient conditions enhance the preservation of depositional organic matter, analysis on paleooxygenation conditions of depositional environments becomes a routine work in evaluations of potential hydrocarbon source rocks. The article focuses on depositional and ecological features relating to oxygen deficient shelfal environments at the Shangsi (上寺) Section, as a part of multidiscipline collaboration to reevaluate the hydrocarbon potential of the Middle and Upper Permian, Guangyuan (广元), Northeast Sichuan (四川) Province. Icbnofabric Zoophycos, sepioilte-bearing limestones (SBL) were interpreted as indicators of dysaerobic environments. Laminated calcareous and/or siliceous mudstones with pelagic ammonites and radiolarians were believed to be the deposits of anaerobic environments. When rhythmic succession was considered, average strategy was adopted for the oxygenation explanation of a given intervaL The anaerobic condition in this Permian section was observed in the upper part of the latest Permian Dalong (大隆) Formation, in which siliceous mudstones with ammonite, radiolarians develop in association with lower U/Mo ratio, lower biomarker ratio of Pr/Ph, and the highest TOC content. The topmost Maokou (茅口) Formation, featured by thin-bedded calcareous and siliceous mudstones with ammonite, thin-shelled bivalves, and laminations would be deposits of the quasianaerobic condition. The middle part of the Members and Ⅲ of the Chihsia Formation is proposed to be dysaerobic condition as indicated by occurrences of SBL and ichnofabric features, with the Member Ⅲ being the severe dysaerobic condition.     

贵州遵义深溪大型隐伏锰矿床的发现及成因探讨

贵州遵义地区锰矿自发现以来,开展了不同程度的勘查和科研工作,探明了以铜锣井大型锰矿床为代表的大小矿床10余个,并对锰矿的区域地质背景,矿床地质特征、沉积环境、矿床成因等方面进行了一定研究,取得了很多重要的进展,是我国重要锰矿成矿区,也是贵州省重要的锰矿资源基地。     

湖北省巴东栖霞组沉积成岩作用地球化学特征研究

在详细的沉积作用、成岩作用研究基础上,利用多元统计分析方法重点对湖北省巴东水布垭剖面栖霞组碳酸盐岩地球化学特征进行了分析。研究表明,该组碳酸盐岩中 CaO 、Al₂O₃ 、K₂O 、Fe₂O₃ 、P、Ba 和 Mn的含量主要与沉积环境或原岩岩性有关,地层中SiO₂、MgO 、Sr 和 Na 的含量主要与成岩作用有关。建立了栖霞组沉积成岩作用地球化学模式。该研究合理地解释了本组岩石特殊的地球化学特征,深化了对该组岩石形成环境,特别是成岩环境的认识,区分了沉积作用和成岩作用对该组岩石地球化学特征的影响,对合理地选取有关地球化学参数研究该组岩石及类似地层的沉积作用和成岩作用具参考价值。