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首页> 外文期刊>Geological Journal >Development and controlling factors of Upper Oligocene-Lower Miocene carbonate platforms and reefs in the Liyue Basin, South China Sea
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Development and controlling factors of Upper Oligocene-Lower Miocene carbonate platforms and reefs in the Liyue Basin, South China Sea

机译：南海李岳盆地上部寡烯碳酸酯平台和珊瑚礁的开发和控制因素

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摘要

The architecture and distribution of Late Oligocene-Early Miocene carbonate platforms and reefs are studied for the first time, using reprocessed 2D seismic data in the Liyue Basin, southern South China Sea. The reef complexes developed at higher positions of fault block platform and horst platform. Fault block platforms are the most important for reef development. In addition, most reefs developed in the Northern I Sag, and a few developed in the Middle Uplift. The growth processes of reefs on the platform were subdivided into six reef-building units and two building stages. The first stage, including units 1-3, displayed slow backstepping and rapid keep up. The second stage was a rapid backstepping process that included the reef-building units 4-6. Palaeogeomorphology, sea-level fluctuations, and later volcanic activities were the main controls for reef occurrence. Palaeogeomorphology provided the initial topography for reef growth, and sea-level fluctuations in combination with tectonic activity influenced reef development including growth and changing facies. Later volcanoes have strongly destroyed the pre-existing carbonate platforms and reefs. By comparing with the carbonate reservoirs properties of adjacent regions, it is considered there is great potential for oil and gas exploration in the Liyue Basin.
机译：第一次研究了晚寡烯 - 早期碳酸酯平台和珊瑚礁的建筑和分布，使用了南海南海李悦盆地的后处理2D地震数据进行了研究。珊瑚礁复合物在故障块平台和霍斯特平台的较高位置开发。故障块平台对REEF开发最重要。此外，大多数珊瑚礁在北部落下开发的珊瑚礁，以及在中隆起的一些发展。平台上的珊瑚礁的生长过程被细分为六个珊瑚礁建设单位和两个建筑阶段。第一阶段，包括1-3单位，表现出慢速缓慢，快速跟上。第二阶段是一个快速的反向插入过程，包括珊瑚礁构建单元4-6。古神经形态，海平面波动，后来的火山运动是珊瑚礁发生的主要控制。古神经形式提供了珊瑚礁生长的初始形貌，海平面波动与构造活动相结合，影响了珊瑚礁发展，包括增长和变化的相。后来火山强烈摧毁了预先存在的碳酸盐平台和珊瑚礁。通过与邻近地区的碳酸盐储层性能进行比较，认为李悦盆地的石油和天然气勘探具有很大的潜力。

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