ANALYSIS OF TENSE-SHEARING CHARACTERISTICS OF HUIZHOU PALEOGENE FAULT DEPRESSION IN PEARL RIVER MOUTH BASIN

Tense-shearing characters of the Huizhou Paleogene Fault Depression in the Pearl River Mouth Basin has been proved by analyses of rift construction,tectonic characteristics and comparing with physical simulation results.Sub-sags,low uplifts and faults are usually en echelon-distributed in the Huizhou Paleogene Fault Depression,which is the typical character of tense-shearing rift.It is mainly formed by oblique intersecting between principal extensional stress and base structural strike.When principal extensional stress is oblique with base structural strike,strike-slipping is produced and tense-shearing characters of fault basin are formed.