Carbonate Platforms in the Reed Bank Area, South China Sea: Seismic Characteristics, Development and Controlling Factors
Carbonate Platforms in the Reed Bank Area, South China Sea: Seismic Characteristics, Development and Controlling Factors
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DOI：
10.1260/0144-5987.32.1.243
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发表时间：
2013-12
影响因子：
2.7
通讯作者：
W. Ding;Jiabiao Li;Congzhi Dong;Yinxia Fang;Yong Tang;J. Fu
中科院分区：
文献类型：
--
作者：
W. Ding;Jiabiao Li;Congzhi Dong;Yinxia Fang;Yong Tang;J. Fu
根据220多km长的多道地震反射剖面，识别了南海礼乐滩碳酸盐岩台地和其他类型生物礁的地震特征。晚渐新世-早中新世碳酸盐台地发育，台地顶部为高振幅连续反射，台地内部为低振幅平行反射。礁碳酸盐的积累继续在构造高点几乎到中新世中期，甚至在里德银行目前。碳酸盐岩台地和生物礁的发育受构造运动和海平面变化的综合控制。在南海漂移阶段，芦苇滩地区处于相对稳定的状态。长期的浅海环境和较低的沉积物输入有利于碳酸盐台地的形成。早中新世南海停止开放后的突然热沉降和海平面的持续上升使碳酸盐台地淹没死亡。Reed Bank盆地是一个非常有前景的勘探领域。
We identify the seismic characteristics about the carbonate platform and other types of reefs in the Reed Bank area, South China Sea, based on a more than 220 km long multi-channel seismic reflection profile. From the Late Oligocene to Early Miocene, carbonate platforms were well developed featured with high-amplitude continuous reflections at the top and low-amplitude parallel reflections within. Reefal carbonate build-ups continued in structural highs almost up to the Middle Miocene, and even to present in the Reed Bank. The development of carbonate platforms and reefs were controlled by the tectonics and sea level changes in the study area synthetically. During the drifting stage of SCS the Reed Bank area was in a relatively stable condition. An everlasting shallow marine environment and low sediments input favored the formation of carbonate platforms. A sudden thermal subsidence after the cessation of SCS's opening in the Early Miocene and the continue rising of sea level made the carbonate platform drown and die. Reed Bank basin is a very promising area for further exploration work.