十万大山地区构造演化和含油气评价

十万大山盆地地构造演化过程为：在华夏被动大陆边缘发育的弧间洋盆基础上,经东吴、印支和燕山期碰撞造山运动,形成晚古生代－中生代前陆盆地,又经过短暂的弧后陆内裂谷阶段,形成了喜马拉雅期右列张扭性盆地。共原型盆地经历了镀嵌、交错、披盖、再镶、交错、披盖、再镶嵌等四个叠置过程。其构造发展由正反转向负反转变化,以多次构造运动叠加后保留的基底部分卷入的冲断－推覆构造形成占主导,并发育典型的楔状前陆盆地、斜坡带     

鲁西茌平背斜构造带的演化及其古生界原生油气勘探前景

鲁西茌平背斜构造带被夹持在东侧寿张凹降和西侧监清坳陷的莘县凹陷之间,处于“凹中之隆”的有利勘探位置。该构造带的演化受西侧兰聊断裂活动的严格控制,晚三叠世,该断裂的产生接开背斜带演化的序幕。兰聊断裂的燕山期具右旋平移性质,使区内北北东向次级正断层发育,构造带基本定型。该带是相邻两凹限油气运移的主要指向地区,两凹陷内含下古生界开阔（局限）海相烃源岩和上古生界煤系源岩;带内下古生介顶部风化壳为良好储层;     

河西内陆河春季流量变化特征的分析和预测

利用昌马、莺落峡、九条岭３个水文站四十余年的月平均流量资料,分析河西地区３条主要内陆河春季流量的长期变化特征,并用均生函数模型对流量进行了预报,为河西地区水资源的研究和利用提供参考依据     

东海陆架盆地伸展率和压缩率及构造跃迁

东海陆架盆地位于欧亚板块的东南缘和西太平洋活动大陆边缘,本文选取了东海陆架盆地主要凹陷的17条地震剖面,采用平衡剖面技术,计算了主要凹陷新生代不同演化阶段的伸展率和压缩率。分析表明,东海陆架盆地构造演化总体由西向东跃迁。晚白垩世至晚古新世东海陆架盆地裂陷中心在西部坳陷带,始新世东迁至东部坳陷带,上新世东迁至东海陆架盆地东侧的冲绳海槽盆地。古新世中后期东海陆架盆地西部坳陷带北侧昆山凹陷反转;中新世东部坳陷带的西湖凹陷反转。东海陆架盆地西部坳陷带与东部坳陷带构造演化不同,证明了东海陆架盆地的东西分带。西部坳陷带北部的长江坳陷和南部的台北坳陷构造演化不同,东部坳陷带北部的西湖凹陷和南部的钓北凹陷构造演化不同,证明了东海陆架盆地的南北分块。     

Cenozoic folding in the Cumuruxatiba basin,Brazil: An approach to the deformation trigger by the Abrolhos magmatism

The Cumuruxatiba basin is located in the central portion of the eastern Brazilian margin surrounded by Cenozoic magmatic highs that belong to the Abrolhos Magmatic Complex. This basin was formed by rifting, in the Neocomian followed by thermal subsidence during late Cretaceous like other basins along the Eastern Brazilian margin. In the Cenozoic, the Abrolhos magmatism took place as sills and dykes intruded the sedimentary section, primarily during the Paleogene. In that time, there was a strong NS contractional deformation in the basin represented by folds related to reverse faults coeval with Abrolhos magmatism activity. The structural restorations of regional 2D seismic sections revealed that most of the contractional deformation was concentrated at the beginning of the Cenozoic with maximum peak at the Eocene (up to 33% of total shortening and rate of 6 km/Ma). The Post-Eocene period was marked by a decrease in the strain rate that continues to the present day (around 4 km/Ma to less than 1). 3D structural modelling exhibited a major, well-developed E–W to NE–SW fold belt that accommodated most of the contractional Cenozoic deformation between Royal Charlotte and Sulphur Minerva magmatic highs. Volcanic eruptions and magmatic flows from the Abrolhos complex resulted in differential overburden on edge of the basin, acting as a trigger for halokinesis and the subsequent formation of fault-related folds. In general, such structures were developed close to adjacent magmatic highs, commonly exhibiting vergence towards the centre of the basin. Some magmatic features formed coeval with Cenozoic syn-deformation sediments clearly indicate that Abrolhos magmatism activity and contractional deformation development were associated. The study of the thickness variation of the syn-deformation section in relation to fault-related folds on deformation maps and maximum strain diagrams revealed that most folds were activated and re-activated several times during the Cenozoic without a systematic kinematic pattern. This lack of systematic deformation might be related to the variation of the magmatic pulse activity of adjacent magmatic highs resulting in a complex interference pattern of Cenozoic folds. These structural interpretations of the timing of fault-related folds that are potential Cenozoic traps in the Cumuruxatiba basin play a fundamental role in petroleum systems and exploration of low-risk hydrocarbon prospects.     

扬州市江都区地热资源前景分析

江都区位于宁通隆起与苏北坳陷接合部,具有良好的地热地质开发利用前景。地热资源主要为传导型,分为孔隙型和岩溶裂隙型2个地热系统。根据地热地质条件分为北部、中部及南部3个地热资源分区。北部以孔隙型为主,中部、南部以构造裂隙型为主。预测可采地热水资源总量约11.18万m3/d,地热水温度40～68℃。     

经验模态分解和独立分量分解在航磁数据处理中的应用

以东天山1∶20万航磁数据为例,利用经验模态分解(EMD)方法对航磁数据进行分解,然后利用独立分量分析(ICA)方法对分解出的固有模态函数(IMF)数据进行重构。分解出来的从高频到低频IMF与地质体的分布具有一定的相关性,不同频率的IMF代表了一定的地质意义。经过ICA重构后的独立分量(IC)能够对异常IMF函数从盲源分离的角度进行有效的重构,其结果可以在一定程度上解释不同的地质事件对磁异常的贡献,并对构造识别和构造区域划分具有一定的指示意义。     

Structural Characteristics of the Andaman Forearc Inferred from Interpretation of Multichannel Seismic Reflection Data

The Andaman Forearc Basin(AFB) is asymmetric in configuration and filled with a ~6 kmthick pile of Neogene to Recent sediments(~4 s in two-way travel time:TWT) with distinct zonation.It shows gradual thinning up to ~3 km(0.8 s in TWT) towards the eastern end with a seabed gradient of 1:30.Thick deformed sediments ~2 s(TWT) of the Outerarc are associated with intense faulting and occasional folding caused by recent tectonics.Development of a series of faults within the upwarped sedimentary column of Oligocene top to Recent is observed with a rotated fault block.These features are manifestations of Recent igneous intrusion,and reveal the presence of a mild N–S compressional regime.Its effect on the AFB resulted in further uplift of sediments,which can now be seen as the Invisible Bank.Forward gravity modelling supporting our seismic interpretation reveals that it is associated with igneous intrusion from the Moho(~9 km depth),and also suggests that continental crust underlies the AFB.Strong Bottom Simulating Reflector(BSR)-like features in the Miocene sediments of Outerarc and Forearc basin at a depth of 0.6 s below the seabed suggest the inferred probable occurrence of gas hydrates in the AFB.     

铁炉子断裂带侧旁地质体的构造解析及找矿方向研究

本文以构造变形为主线,将沿铁炉子断裂带侧旁的地质体划分为不同的构造均匀区段。解析了不同区段内的变形特征,总结了包括矿体就位方式和后期改造在内的综合地质事件演化序列。指出了铅锌矿的找矿方向及其它金属矿产的找矿线索。     

基于结构水文地质学的采掘诱发高势能突水溃砂主动防控

在谷德振先生“水文地质结构”学术思想指引下,本文提出建立结构水文地质学的设想,论述了其基础理论框架。从方法论角度将矿山水害防控分为被动防控和主动防控两种方法。以结构水文地质学指导煤矿高势能突水溃砂防控,分析了被动防控可能产生突水溃砂灾害的机理; 提出了主动地质工程防控的原理,包括地质材料性质改造、结构隔水性能重构、赋存水动力环境改造、减轻采掘诱发覆岩破坏等具体方法。抛砖引玉,以期催生符合中国矿山防治水实践需要的创新理论和方法。