检索条件"作者=li Zhong, liU Shaofeng, ZHANG Jinfang & WANG Qingchen1. Institute of Geology and Geophysics, chinese academy of sciences, beijing 100029, china"
Basin-fill sequences of Mesozoic typical basins in the Yanshan area, North china may be divided into four phases, reflecting lithosphere tectonic evolution from flexure (T3), flexure with weak rifting (J1+2), tectonic...
详细信息
Basin-fill sequences of Mesozoic typical basins in the Yanshan area, North china may be divided into four phases, reflecting lithosphere tectonic evolution from flexure (T3), flexure with weak rifting (J1+2), tectonic transition (J3), and rifting (K). Except the first phase, the other three phases all start with lava and volcaniclastic rocks, and end with thick coarse clastic rocks and/or conglomerates, showing cyclic basin development rather than simple cyclic rift mechanism and disciplinary basin-stress change from extension to compression in each phase. Prototype basin analysis, based on basin-fill sequences, paleocurrent distribution and depositional systems, shows that single basin-strike and structural-line direction controlling basin development had evidently changed from east-west to northeast in Late Jurassic in the Yanshan area, although basin group still occurred in east-west zonal distribution. Till Early Cretaceous, main structural-line strike controlling basins just turned to northeast by north in the studied area.
Basin-fill sequences of Mesozoic typical basins in the Yanshan area,North china may be divided into four phases,reflecting lithosphere tectonic evolution from flexure(T),flexure with weak rifting(J),tectonic transitio...
详细信息
Basin-fill sequences of Mesozoic typical basins in the Yanshan area,North china may be divided into four phases,reflecting lithosphere tectonic evolution from flexure(T),flexure with weak rifting(J),tectonic transition(J),and rifting(K).Except the first phase,the other three phases all start with lava and volcaniclastic rocks,and end with thick coarse clastic rocks and/or conglomerates,showing cyclic basin development rather than simple cyclic rift mechanism and disciplinary basin-stress change from extension to compression in each *** basin analysis,based on basin-fill sequences,paleocurrent distribution and depositional systems,shows that single basin-strike and structural-line direction controlling basin development had evidently changed from east-west to northeast in Late Jurassic in the Yanshan area, although basin group still occurred in east-west zonal *** Early Cretaceous,main structural-line strike controlling basins just turned to northeast by north in the studied area.
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