塔里木盆地巴楚隆起断裂差异活动特征及成因演化

巴楚隆起是塔里木盆地重要的含油气构造单元,因其断裂构造特征与演化异常复杂,严重制约了对该地区构造特征及演化的认识和油气勘探工作。本文通过对地震资料精细构造解释,并结合塔里木盆地构造演化背景及最新的钻井、露头等资料,阐明了巴楚隆起断裂活动具有明显的分期差异性和分区、分带、分段及分层差异性。巴楚隆起断裂构造主要经历了4期差异活动,即加里东早期发育张扭性断裂、海西晚期断裂挤压反转、喜马拉雅山中期断裂强烈压扭逆冲与分区差异变形、喜马拉雅山晚期西南缘断裂带分段分层差异改造与叠加。断裂演化主要受控于加里东早期、海西晚期和喜马拉雅山中-晚期构造运动及对应时期塔里木古陆周缘洋盆开合与造山作用,喜马拉雅山中期是巴楚隆起断裂活动关键期,因受西昆仑和西南天山强烈挤压,隆起西段发生“屈服型”冲断隆升与走滑旋转,东段相应发生“受限型”弧形逆冲与向南掀斜,喜马拉雅山晚期断裂主要活动表现在隆起西北缘和西南缘,特别在西南缘断裂带发生了强烈的分段、分层差异叠加改造,其成因与西昆仑强烈隆升和向北挤压密切相关。     

Simulation of frozen ground distribution in northeast China based on a surface frost number model

Journal of Geographical Sciences - Against the background of global warming, environmental and ecological problems caused by frozen ground degradation have become a focus of attention for the...     

阳江地区显著地震前小震引潮力触发异常的研究

在国内外引潮力触发地震近期一些研究进展的基础上,利用基于区域应力场资料的加卸载响应比时空扫描方法、Schuster检验低p值时程扫描及水平引潮力方位角优势分布来研究阳江地区显著地震前小震引潮力触发异常的问题。     

广东省两次流体宏观异常的落实

从外界干扰因素排除、区域构造活动异常鉴别、地下流体动力学等方面对广东省内出现的两次流体宏观异常进行了分析．讨论了引起异常的原因,从而排除了地震前兆的可能,对汶川地震后老百姓的“恐震”心理起到了安定作用。     

Abiogenic hydrocarbons in commercial gases from the Songliao Basin, China

This paper discusses the kinetic fractionation, composition and distribution characteristics of carbon and hydrogen isotopes for various alkane gases formed in different environments, by different mecha- nisms and from different sources in nature. It is demonstrated that the biodegradation or thermode- gradation of complex high-molecule sedimentary organic material can form microbial gas or thermogenic gas. The δ 13C1 value ranges from -110‰ to -50‰ for microbial gases but from -50‰ to -35‰ (even heavier) f...     

利用等位移原则估计高层结构的非弹性地震反应(二)

通过高层结构弹性和非弹性地震时程反应分析,研究了两者的位移反应关系。结果表明：结构在不同地震作用下非弹性总位移角反应的平均值与弹性反应十分接近,基本符合等位移原则,可以用后者分析结果直接估计前者;结构最大层间位移角反应的平均值在弱和中等非线性阶段亦与弹性反应十分接近,在强非线性阶段则大于弹性反应,经数据拟合,初步提供了一个在此阶段由弹性最大层间位移角反应估计非弹性反应的近似公式。     

石英和碳酸钙表面位的FDIR谱学研究

本文采用漫反射红外光谱（ＦＤＩＲ）方法对石英、方解石、合成碳酸钙和孔雀石等矿物表面位（基团）作了研究。随着溶液ｐＨ值的升高,由于表面基团间氢键的影响,石英表面位〉Ｓｉ－Ｏ和〉Ｓｉ－Ｏ－Ｓｉ的吸收峰向高频方向漂移,即〉Ｓｉ－Ｏ非对称伸缩振动吸收峰由１０３６ｃｍ＾－１→１０４５ｃｍ＾－１→１０４７ｃｍ＾－１,〉Ｓｉ－Ｏ－Ｓｉ对称伸缩振动吸收峰由７７７ｃｍ＾－１→７８２ｃｍ＾－１→７８８ｃｍ＾－１,而〈     

用硫化物矿物处理电镀厂废水技术研究

大多数环境工程材料是通过表面作用（ 吸附或共沉淀） 来清除水中的有毒有害物质的,这就要求材料本身具有高表面活性。在搞清硫化物固／ 液界面行为机理的基础上,本文采用高表面活性的硫化物作为吸附剂,以重金属污染大户———电镀厂的酸性废水作为处理对象,研制了一种低成本、高效益、以废治废、简便易行的重金属污染物处理技术———硫化物矿物→鼓气搅动→ＣａＯ 调ｐＨ 值。废水经处理后,完全可以达到国家规定的排放标准。该技术的研制,对保护和净化环境具有重要的现实意义,同时具有广阔的应用前景。     

Discovery and Significance of High CH4 Primary Fluid Inclusions in Reservoir Volcanic Rocks of the Songliao Basin, NE China

Comparing compositions of the fluid inclusions in volcanic rocks to the contents and isotopes of the gases in corresponding volcanic reservoirs using microthermometry, Raman microspectroscopy and mass spectrum analysis, we found that： （1） up to 82 mole% methane exists in the primary inclusions hosted in the reservoir volcanic rocks; （2） high CH4 inclusions recognized in the volcanic rocks correspond to CH4-bcaring CO2 reservoirs that are rich in helium and with a high ^3He/^4He ratio and which show reversed order of 813C in alkane; （3） in gas reservoirs of such abiotic methane （〉80%） and a mix of CH4 and CO2, the enclosed content of CH4 in the volcanic inclusions is usually below 42 mole%, and the reversed order of δ^13C in alkane is sometimes irregular in the corresponding gas pools; （4） a glassy inclusion with a homogeneous temperature over 900℃ also contains a small portion of CH4 although predominantly CO2. This affinity between gas pool and content of inclusion in the same volcanic reservoirs demonstrates that magma-originated gases, both CH4 and CO2, have contributed significantly to the corresponding gas pools and that the assumed hydrocarbon budget of the bulk earth might be much larger than conventionally supposed.     

A Large Therizinosauroid （Dinosauria： Theropoda） from the Early Cretaceous of Northwestern China

We herein describe an associated partial postcranial skeleton of a theropod dinosaur discovered in the Lower Cretaceous Xinminpu Group of the Yujingzi Basin, in the Jiuquan area of Gausu Province, northwestern China. Features of its humerus, such as strongly expanded proximal and distal ends, a well developed medial tuberosity, distal condyles expressed on the humeral cranial surface, and a hypertrophied entepicondyle, definitively establish the therizinosauroid affinities of the specimen. It differs from other therizinosauroids in having a shallow, poorly demarcated glenoid fossa with a prominent rounded and striated tumescence on the dorsomedial surface of its scapular portion, and a pubis with a strongly concave cranial margin. It represents a new taxon, Suzhousaurus megatherioides gen. et sp. nov. Cladistic analysis recovers Suzhousaurus as the sister taxon of Nothronychus mckinleyi from the mid-Cretaceous of western North America; together, they are basal members of the Therizinosauroidea, more derived than the Early Cretaceous Falcarius and Beipiaosaurus but less derived than Alxasaurus and the Therizinosauridae. Along with ＂Nanshiungosaurus＂ bohlini from possibly coeval beds in the Mazongshan area of northern-most Gansu, Suzhousaurus represents one of the largest-known Early Cretaceous therizinosauroids, demonstrating that this clade attained considerable body size early in its evolutionary history.