韩国西南白垩系最下部Kyokpori组的漂砾沉积物研究

韩国西南白垩系最下部Ｋｙｏｋｐｏｒｉ组的漂砾沉积物研究＊Ｓ，Ｂ．Ｋｉｍ等１．引言（扇）三角洲陡坡上粗粒沉积物的水下沉积过程由各种非粘性沉积运动所共同控制，包括无粘性碎屑流、碎屑崩坍和高密集度的浊流（评论，见Ｎｅｍｅｃ，１９９０）。这些推论在很大程度上...     

江苏岸外条子泥二分水滩脊的沉积特征

2000年1月16日在江苏岸外条子泥沙洲二分水滩脊选取三条断面，进行底质沉积物采样及滩面高程测量。共采集样品27个，对其用激光粒度仪进行粒度分析，发现沉积物的粒度参数、粒度组分及其分布均具有一定的变化规律，且与滩面高程变化具有很好的相关性。     

青岛胶州湾3.2级地震构造背景与控震断裂

本文应用构造分析的方法 ,对青岛胶州湾 3.2级地震发生的地震地质背景和构造背景进行分析。结果表明 :胶州湾 3.2级地震主要受 NEE向郝官庄断裂和 NNW向大沽河断裂控制 ,并根据现代活动断裂的标志 ,对上述 2组断裂活动性特征作了阐述     

广州幅（F49）南半幅—海南岛幅（E49）海域新生代沉积盆地分布和油气资源

南海北部陆缘大陆架是新生代含油气盆地的主要分布区，１：１００万广州幅（Ｆ４９）南半幅一海南岛幅（Ｅ４９）范围内包含了北部湾盆地、莺歌海盆地、琼东南盆地、珠江口盆地等。本文是该图幅矿产图及其说明书的基础上系统介绍和油气盆地分布、沉积、油气资源概况，地南海北部陆缘盆地油气资源勘探、远景评价具有重要意义。     

珠江口河流输沙、河口沉积与粒度信息之间的联系

河口三角洲地区泥沙供应充分，是现代沉积速率较高的区域。快速沉积的泥沙包含高分辨率的环境信息。采用放射性同位素测年方法研究了珠江口伶仃洋大铲湾海域6个柱样的现代沉积速率，以2mm的间隔分析了其中2个柱样上部的粒度，并对其平均粒径和珠江流域的年输沙量进行了快速傅里叶变换，以期获取河流泥沙供应、河口沉积速率和沉积物垂向粒度变化的对应关系。结果表明，大铲湾海域的沉积速率为1～3cm／a，受动力条件和泥沙供应条件的影响显著。2个柱样的平均粒径的最显著重现周期与珠江年输沙量的周期性有较好的对应关系，并可能反映了季节的、年的和多年的沉积速率信息。对于每年沉积厚度在厘米级的环境，以毫米级的高分辨率进行粒度分析，有可能揭示出沉积物供应的季节变化和年际变化。本研究亦可为其他河口的相关工作提供借鉴。     

Hydrocarbon Potential of Pre-cenozoic Strata in the North Yellow Sea Basin

The North Yellow Sea Basin ( NYSB ), which was developed on the basement of North China (Huabei) continental block, is a typical continental Mesozoic Cenozoic sedimentary basin in the sea area. Its Mesozoic basin is a residual basin, below which there is probably a larger Paleozoic sedimentary basin. The North Yellow Sea Basin comprises four sags and three uplifts. Of them, the eastern sag is a Mesozoic Cenozoic sedimentary sag in NYSB and has the biggest sediment thickness; the current Korean drilling wells are concentrated in the eastern sag. This sag is comparatively rich in oil and gas resources and thus has a relatively good petroleum prospect in the sea. The central sag has also accommodated thick Mesozoic-Cenozoic sediments. The latest research results show that there are three series of hydrocarbon source rocks in the North Yellow Sea Basin, namely, black shales of the Paleogene, Jurassic and Cretaceous. The principal hydrocarbon source rocks in NYSB are the Mesozoic black shale. According to the drilling data of Korea, the black shales of the Paleogene, Jurassic and Cretaceous have all come up to the standards of good and mature source rocks. The NYSB owns an intact system of oil generation, reservoir and capping rocks that can help hydrocarbon to form in the basin and thus it has the great potential of oil and gas. The vertical distribution of the hydrocarbon resources is mainly considered to be in the Cretaceous and then in the Jurassic.