赣东北晚三叠世古地理演化及聚煤作用

赣东北晚三叠世含煤岩系形成于受武夷,怀玉和江南山地所限制的咸水、半咸水陆缘近海湖沉积环境。古地理演化、沉积环境明显控制含煤岩系沉积特征及聚煤作用。     

The Jurassic system of China—Main characteristics and recent advances in research

In China, the marine Jurassic is mainly distributed in the Qinghai-Tibetan Plateau, southwestern China and environs including southwestern Xinjiang and western Yunnan. Along the western palaeo-Pacific coast, marine Jurassic deposits, which usually intercalate with nonmarine strata, exist sporadically in eastern Heilongjiang, western Fujian, Hongkong, central Guangdong, western Jiangxi, eastern and southwestern Hunan Province, and probably also in western Taiwan. Nonmarine Jurassic strata are widely distributed in the whole of China except for southern Tibet area. They are commonly intercalated with volcanic rocks and contain volcanic materials in eastern China, and in southern Tibet. Marine strata yield various abundant fossils including ammonites, which were widespread in the Tethyan Realm even all over the world. Consequently, China is a critical region to attempt marine and non-marine Jurassic correlation. Through various investigations, both marine and non-marine Jurassic biozonations or assemblages have been established and by this the marine and non-marine Jurassic stratigraphic system and their correlation in China have been clarified.     

Middle-Late Jurassic marine dinoflagellate cysts from the eastern Qiangtang Basin in the Qinghai-Tibet Plateau, China

Dinoflagellate cysts from two Middle-Late Jurassic sections in the Wenquan and Yanshiping regions of the Qiangtang Basin comprise 24 genera and 36 species including one new taxon of the genus Tenua. Based on their stratigraphic distribution, six assemblage zones are recognized in ascending order as follows: 1) Tubotuberella egemenii Zone, probably Callovian, in the mid-upper part of the Xiali Formation; 2) Pareodinia ceratophora Zone, probably Oxfordian, in the lower part of the Suowa Formation; 3) Batiacasphaera floralis Zone, probably Oxfordian, in the middle part of the Suowa Formation; 4) Amphorula metaelliptica Zone, probably Early Kimmeridgian, in the upper part of the Suowa Formation; 5) Alisocysta spp. Zone, probably Early Kimmeridgian, in the base of the Xueshan Formation; 6) Tenua wenquanensis sp. nov. -Dichadogonyaulax schizoblata Zone, probably Late Kimmeridgian-Tithonian, in the lower part of the Xueshan Formation. Based on our analysis the Jurassic-Cretaceous Boundary in the Wenquan section is placed higher than previously.     

台北凹陷侏罗系储层次生孔隙特征及形成机理

通过台北陷侏罗系储层岩石学特征、孔隙发育特征的分析，得出其原生孔不发育，次生孔隙是主要孔隙类型和油气聚集的主要空间，进而分析了次生孔隙的微观、宏观识别标志以及空间分布特征。通过孔隙水中有机酸和碳酸含量与来源的分析，探讨了次生孔隙的形成机理，认为有机酸对骨架颗粒长石和岩屑的溶解是形成次生孔隙的根本原因。该研究对台北凹陷及至整个盆地株罗系的油气勘探和开发具有重要的现实意义。     

天祝炭山岭盆地侏罗系沉积基本特征

天祝炭山岭盆地侏罗系是一套陆源沉积物,其沉积时为潮湿气候,淡水-微咸水条件,沉积环境为河流→沼泽→湖泊。     

中国东南部晚中生代伸展应力体制的岩石学标志

在中国东南部晚中生代时期（J2－K2），发育着大规模岩墙群、广泛的岩浆混合作用（包括侵入杂岩中的岩浆混合和火山岩中的复合岩流／双峰式火山岩）、大范围玄武岩浆的底侵、巨型链状火山岩带、晶洞花岗岩－A型花岗岩带、变质核杂岩，以及玄武岩的无斑隐晶－细粒结构和花岗岩的均匀块状结构。对它们的研究表明，它们形成于伸展应力体制，是伸展构造的岩石学标志，发生在晚中生代整个地质时期，并认为这一伸展构造由古太平洋库拉板块对欧亚板块的消减作用诱发。     

四川黄龙地区晚泥盆世-早二叠世古群落分析

四川黄龙地区晚泥盆-早二叠世含丰富的生物化石,可划分出6个古生物群落.通过对个体生态、营养结构的分析及围岩和生物组合特征的研究表明:Gigantoproductus gianteus群落和Choristites群落为不成熟群落,环境属台地边缘;Triticites-Pseudoschwagerina群落和Verbeekina群落为成熟生物群落,Parafusulina-Schwagerina群落和Dictyoclostus-Schellwienella群落为较成熟群落,均属开阔台地生态环境.各群落在时间上相互取代主要受控于海水深度、海水持续缓慢变化导致的环境渐变,属缓慢环境变化型取代.结合各群落古生态环境及群落取代关系,建立了生态环境模式.     

贵州关岭晚三叠世邓氏贵州鱼龙（Guizlwuichthyosaurus tangae Cao and Luo in Yin et a1．，2000）的讨论

贵州省关岭县新铺地区晚三叠世法郎组瓦窑段下部的鱼龙标本保存完整、精美，对它们准确而详细的描述将对研究鱼龙类分类、演化和完善其演化谱系具有重要的意义。目前对其中大型鱼龙已有Guizhouichthyosaurus tangae、Typicusichthyosaurus tsaihuae、Guanlingsaurus liangae、Cymbospondylus asiaticus、Panjiangsaurus epicharis等5个命名。在野外调查、室内修理、观察、比较的基础上，补充、修正了Guizhouichthyosaurus tangae的描述，并认为Cymbospondylus asiaticus和Panjiangsaurus epicharis应为Guizhouichthyosaurus tangae的同物异名。     

宁武-静乐盆地永定庄组的发现及其地质意义

通过1：25万岢岚县幅地质调查，认为测区内宁武-静乐盆地存在永定庄组，根据在区内新发现的不整合面、恐龙化石、火山碎屑岩等，认为该组属早侏罗世，并为山西的早侏罗世与冀西一带早侏罗世的对比提供了依据。