琼东南盆地陆坡体系发育特征及其控制因素Depositional Characteristics and Controlling Factors of Continental Slope System in the Qiongdongnan Basin
何云龙;解习农;李俊良;张成;苏明;
摘要(Abstract)：
琼东南盆地位于南海北部大陆边缘,是发育于前古近系基底之上的裂陷盆地,自中新世以来进入裂后沉降期。10.5Ma以来,随着盆地演化进入加速沉降阶段,盆地水深迅速增大,陆坡体系开始发育。根据陆坡体系的外部形态及其内部沉积构成特征,在空间上自西向东可以将其划分为3段,盆地西部陆坡以快速进积的陆坡楔状体为主要特征;盆地中部陆坡以陡倾的陆坡角度,大量的陆坡峡谷、沟谷和大规模的沉积物重力流等陆坡沉积为特征;盆地东部陆坡以宽缓的陆坡形态为主要特征。研究表明,沉积物供给和断裂活动对陆坡体系的发育都具有重要的控制作用;同时,陆坡发育时期所经历的沉积过程、古地貌形态和相对海平面变化对陆坡体系的发育也具有一定的控制作用。
关键词(KeyWords)： 陆坡体系;控制作用;琼东南盆地;南中国海
基金项目(Foundation): 国家重点基础研究发展计划“973”项目(2007CB411705-06);; 中国地质大学构造与油气资源教育部重点实验室开放研究基金课题(TRP-2009-17)
作者(Author): 何云龙;解习农;李俊良;张成;苏明;
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DOI:
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