华南碳酸盐岩型铀矿床中有机质及其与铀成矿的关系

华南碳酸盐岩铀矿床,分布广泛,产于泥盒—二叠纪的各地层中。矿床受岩相、构造、水文地球化学等多种条件控制。矿化与有机质关系密切,而有机质的分布受泻湖相带控制。经研究对比,与成矿有关的有机质属于腐泥型,来源于海相微体生物和藻类。铀在各地层中的含量不均匀,富里酸和腐殖酸是含铀的主要有机质。     

Crustal Growth Rate of the North China Platform：a Method of Estimating Mass Equilibrium between Crust and Mantle

The following equation is proposed in this paper to estimate the crustal growth rate of the North China Platform on the basis of mass equilibrium between the crust and the mantle:

塔里木板块周缘晚古生代以来的构造演化

塔里木板块在晚古生代以来,经历了一系列碰撞和拼合事件,受北侧哈萨克斯坦－准噶尔板块碰撞的影响,南天山石炭纪再生洋盆于早二叠世末隆起,并导致天山山前陆盆地形成。这一时期塔木西部强烈的热活动事件,反映了一次地壳开裂活动,并导致天山山前的前陆盆地形成,这一时期里木西部强烈的热活动事件,反映了一次地壳开裂活动,同时进一步推动了塔里木向天山下插的陆内俯冲活动及前陆盆地的形成,中生代时期,特提斯洋盆的活动及先     

Tectonic Evolution of China and Its Control over Oil Basins

This paper is a brief review of the tectonic frame and crustal evolution of China and their control over the oil basins. China is subdivided into three regions by the Hercynian Ertix-Almantai(EACZ) and Hegenshan (HGCZ) convergent zones in the north, and the Indusinian Muztagh-Maqen(MMCZ) and the Fengxiang-Shucheng (FSCZ) convergent zones in the south. The northern region represents the southern marginal tract of the Siberian platform. The middle region comprises the SinoKorea (SKP), Tarim (TAP) platforms and surrounding Paleozoic orogenic belts. The southern region includes the Yangtze platform (YZP), the Cathaysia (CTA) paleocontinent and the Caledonides between them in the eastern part, and the Qinghai-Tibet plateau composed of themassifs and Meso-and Cenozoic orogenic belts in the western part. The tectonic evolutions of China are described in three stages: Jinningian and pre-Jinningian, Caledonian to Indusinian, and post-Indosinian. Profound changes occurred at the end of Jinningian (ca. 830 Ma) and the Indusinian (ca. 210 Ma) tectonic epochs, which had exerted important influence on the formation of different types of basins. The oil basins distribute in four belts in China, the large superimposed basins ranging from Paleozoic to Cenozoic(Tarim and Junggar) in the western belt, the large superimposed basins ranging from Paleozoic to Mesozoic (Ordos and Sichuan) in the central belt, the extensional rift basins including the Cretaceous rift basins (Songliao) and the Cenozoic basin (Bohaiwan) in the eastern belt, and the Cenozoic marginal basins in the easternmost belt in offshore region. The tectonic control over the oil basins consists mainly in three aspects: the nature of the basin basement, the coupling processes of basin and orogen due to the plates interaction, and the mantle dynamics, notably the mantle upwelling resulting in crustal and lithuspheric thinning beneath the oil basins.     

拉巴河地区金、铜成矿条件及找矿远景初探

拉巴河地区位于准噶尔微板块玛依勒早古生代沟弧带内，西准噶尔铬、金成矿带和阿拉套钨、钼、锡、金成矿带结合部位．1：5万化探普查圈出以Au，Cu为主的综合异常66处，找矿远景区8处异常沿达尔布特大断裂及其次级构造、岩体外接触带分布，具规模大、强度高、高值点集中、成片分布特点，有近NS、NE、NW向3条异常富集带，     

闸河矿区张庄井田二叠纪石盒子组碳酸盐岩沉积环境探讨

在闸河矿区张庄井田钻探施工过程中，在早二叠世晚期石盒子组下段上部发现浅海相碳酸盐岩沉积。这在闸河矿区、两淮煤田乃至华北石炭二叠系聚煤区都是首次发现，其地质意义重大。笔者通过对碳酸盐岩沉积特征的观察和研究，尝试对其沉积环境进行探讨。     

塔河油田碳酸盐岩缝洞型储层的测井识别与评价方法研究

塔河油田奥陶系以碳酸盐岩为主，油气的主要储渗空间为裂缝和溶蚀孔洞，具有很强的非均质性．本文利用常规及成像测井资料，对碳酸盐岩缝洞型储层的识别与评价方法进行研究．为了综合各种测井方法识别裂缝，建立了综合裂缝概率模型，计算综合裂缝概率指示裂缝的发育程度．利用地层微电阻率扫描成像测井资料进行裂缝和溶蚀孔洞的定性、定量解释．定量计算的裂缝参数为：裂缝密度、裂缝长度、裂缝平均宽度、平均水动力宽度、裂缝视孔隙度；定量计算的溶蚀孔洞参数有：面孔率、孔洞密度．根据缝洞型储层孔隙空间类型及其中子孔隙度、补偿密度、声波、双侧向电阻率的测井响应物性特征，建立缝洞型碳酸盐岩储层复杂孔隙介质解释模型，用于确定裂缝、溶蚀孔洞孔隙度和评价储层．     

湖南省保靖县城供水水文地质条件及建井

湖南省湘西地区山高谷深、碳酸盐岩广布，干旱缺水问题十分突出，如何解决是个难点。在典型岩溶地区保靖县城附近开展勘查工作，查明了该地水文地质条件，找到了单井涌水量5000m^3／d的优质地下水，并建井2口，一举解决了保靖县城的现状供水问题。这项勘查成果不仅解决了当地的实际问题，而且对岩溶石山地区的水文地质研究、勘查和找水建井等奠定了基础。