摘要
典型的前陆盆地一般位于造山带和稳定克拉通之间的狭长槽地,而南黄海盆地则主要为华北—扬子地块陆陆碰撞及后期太平洋系构造运动叠加形成的"再生"陆内前陆盆地,因此具有其"特殊性"。虽然南黄海前陆盆地经过多期构造运动叠加改造及破坏,但仍然保存了比较完整的楔顶、前渊、前隆及隆后各带,故划分了各带分布的位置,认为其楔顶沉积带位于千里岩隆起、前渊带位于北部坳陷东北凹、前隆带位于其乳山凸起、隆后沉积带位于乳山凸起与中部隆起间;并从地震、沉积、构造3方面分析了各带的结构构造和沉积特征。
Typical foreland basinsare generally located in the narrow trough between the orogenic belt and the stable craton. The South Yellow Sea Basin, however, is rather special. It is a ＂reactivated＂ foreland basin, formed by continental collision between North China and the Yangtze and superimposed later by the post Pacific Tectonic movement. Even if it is altered and destroyed by multiple tectonic movements later on, it still keeps relatively complete wedge-top, foredeep, forebulge and backbulge. We defined in this paperthe locations of various depositionalzones. The wedge-top depositional zone is located in the Qianliyan uplift, theforedeep depositional zone located in the northeast depression, the forebulge depositional zone located in the Rushan bulge, and the back-bulge depositional zone located between the Rushan bulge and the central uplift. From three aspects of earthquake, sedimentation and tectonics, we analyze the tectonic and depositional characteristics of each zone of the system.
出处
《海洋地质前沿》
2015年第4期35-41,共7页
Marine Geology Frontiers
基金
中国地质调查局项目(GZH201200510)
国家重点基础发展研究计划(973计划)(2012CB956004)
国家自然科学基金(41106064
49206061)
关键词
前陆盆地系统
构造
沉积
南黄海
foreland basin system
structure
sedimentation
characteristic
the South Yellow Sea
