Inversion structure features and their dynamic significances in Early Neogene strata at continental margin of the northeast South China Sea

SHANG Ji-hong; LI Jia-biao

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SHANG Ji-hong, LI Jia-biao. Inversion structure features and their dynamic significances in Early Neogene strata at continental margin of the northeast South China Sea[J]. Haiyang Xuebao, 2009, 31(3): 73-83.

Citation:

SHANG Ji-hong, LI Jia-biao. Inversion structure features and their dynamic significances in Early Neogene strata at continental margin of the northeast South China Sea[J]. Haiyang Xuebao, 2009, 31(3): 73-83.

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Inversion structure features and their dynamic significances in Early Neogene strata at continental margin of the northeast South China Sea

Key Laboratory of Submarine Geosciences of State Oceanic Administration, Second Institute of Oceanography, State Oceanic Administration;Hangzhou 310012, China

Received Date: 2008-03-03
Rev Recd Date: 2008-12-05

Abstract

Abstract

Combing with regional well-log data,the complicated tectonic movements were explored atcontinental margin of the northeast South China Sea(SCS) such as rifting at Early Cenozoic,phasic extrusion at Late Miocene and stable thermal sedimentation after Pliocene by analy zing high resolution multi-channel seismic profiles acquired in the national "973" project.Therein,the typical extruding inversion structures such as anticlines and reversed faults existing at Mid-Lower Miocene strat a especially in back of to tally rifting evolutionary conditions manifested the phasic extruding tectonic movement occurred at about Late Miocene in the nort heast SCS.Analyzed results show that the inversion structure is the external performance of Dong sha movement.And its dynamic origin is related to the northwest movement of Philippine Sea Plate.
- continentalmarg in of northeast SCS,
- Manila subducting zone,
- anticline,
- fold,
- extrusion,
- unconformity

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References

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