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首页> 外文会议>Annual Indonesian Petroleum Association convention and exhibition >RECOGNITION OF PROGRADATIONAL SHELF DEPOSITS IN THE MIDDLE MIOCENE OF KUTAI BASIN
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RECOGNITION OF PROGRADATIONAL SHELF DEPOSITS IN THE MIDDLE MIOCENE OF KUTAI BASIN

机译：Kutai盆地中部内部探究探究式货架沉积物

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A succession of middle Miocene rocks is exposed in section near Samarinda, East Kalimantan. The succession is characterized by massive sandstone rich in carbonaceous materials at the bottom of the section. The middle part of the section is dominated by mass flows as well as thin bedded sandstones showing Bouma divisions. The abundant coal and organic materials within turbidite sandstones are important for generating hydrocarbons. Bioturbated thin-bedded sandstones occupy the upper part of the section. The sandstones and shales in the lower part of the succession are interpreted as deposited by turbidity currents in slope to basin floor setting. The whole section is then capped by the carbonate Air Putih in the form of patch reefs interpreted here as to have been grown at the shelf-edge. Above the carbonate Air Putih three shallow marine Para sequences are observed. These parasequences show a coarsening-upward trend with very fine sandstones and shales in the bottom grading to coarser-grained sandstone with low angle planar cross-stratification in the upper section. The uppermost part of the section is highly bioturbated and capped by reefal carbonates. The geometrical disposition of different sand layers shows a wedge-like prism, i.e. they are thinner on the west side of the outcrops and thicker to the east. The wedge geometry can be attributed to the increase of accommodation space towards the slope. Sands deposited at the shelf-edge filled the space available at the head of the slope forcing the shelf-edge to prograde eastward. These shallow marine parasequences and reefal carbonates are interpreted as representing a prograding shelf and shelf-edge setting respectively.
机译：一系列中间内部岩石在萨马林达东部萨马兰达州萨马林达附近暴露。继承的特点是含有富含碳质材料的砂岩。该部分的中间部分由大规模流量的主导，以及显示BOUMA部门的薄层砂岩。浊度砂岩内丰富的煤和有机材料对于产生碳氢化合物很重要。生物干扰薄层砂岩占据了该部分的上半部分。连续的下半部分的砂岩和Shales被解释为斜坡上的浊度电流沉积到盆地地板。然后通过碳酸盐空气Putih以贴片礁的形式覆盖整个部分，其在这里被解释为在搁板边缘处生长。在碳酸盐空气PutiH之上观察到三个浅海洋对照序列。这些假设曲线展示了较粗糙的砂岩趋势，底部分级中的砂岩和Shales，以较粗糙的砂岩，在上部，低角度平面横向分层。该部分的最上部是高度生物化的并且通过含碳酸盐覆盖。不同砂层的几何形状显示出楔形棱镜，即它们在露头的西侧较薄，向东厚。楔形几何形状可归因于朝向坡度的容纳空间的增加。沉积在搁板边缘的沙子填充了斜坡头部的可用空间，迫使搁板边缘向东地铺设。这些浅海洋解剖和refal碳酸盐分别被解释为代表促置搁板和搁板边缘设置。

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