摘要
东海陆架盆地属大陆边缘裂陷盆地,具有构造活动多期、反转构造明显和盆地动力背景复杂的特点。太平洋板块向欧亚板块的俯冲、深部地幔柱的活动是陆架盆地形成的主要动力;印度板块向欧亚大陆楔入造成的远程影响是导致构造应力场反转、触发和促进盆地裂陷作用的重要动力来源;盆地晚期自东向西的挤压力是第三位的构造力。根据可容纳空间的概念,从控制层序构型的影响因素,即海平面变化、构造沉降、沉积补给等方面讨论了东海陆架盆地第三系沉积构造动力背景。
The East China Sea shelf basin belongs to continental marginal
rifting basin. It underwent several tectonic events and shows the characteristics of obvious
inversions and complex geodynamic settings. It is the main dynamics that Pacific plate
underthrusts beneath Eurasian plate and the activities of mantle plume between upper and
lower mantle. The effect produced by which India plate thrust into Eurasian plate was the
important dynamic source to result in the inversion of tectonic stress field and triggering and
promoting basin rifting. The compressive force from east to west in the late period was the third
tectonics stress. According to the concept of accommodation, the Tertiary sedimentary dynamic
setting is discussed from the elements controlling the architecture of sequence, which are sea
level changes, tectonic subsidence and sedimenary supply.
出处
《现代地质》
CAS
CSCD
北大核心
1999年第2期157-161,共5页
Geoscience
基金
国家自然科学基金
国家重点科技攻关项目
关键词
构造背景
沉积动力
第三系
东海
陆架盆地
geodynamics,
sedimentary dynamics, Tertiary, East China Sea shelf basin