Migrated Sequence Stratigraphic Architecture and Its Geological Significance in Huizhou Depression,Pearl River Mouth Basin
Liu Haoran
Zhu Hongtao
Shi Hesheng
Shu Yu
Fu Xin
Liu Yimeng
Abstract：Migrated sequence stratigraphic architecture represents a special type in continental lacustrine rift basin.However,its character-istics and main controlling factors are unclear yet.Lower Wenchang Formation (PSQ1-PSQ4)is mainly distributed at south of Huizhou de-pression,while upper Wenchang Formation (PSQ5-PSQ7)is distributed at northern part.It is found in this study that sequences in Wen-chang Formation migrate from southeast to northwest across Huizhou depression.Migration of sequence is generally caused by different stages of episodic tectonic activity.In rifted stage IA,tectonic activities of southern depression strengthen largely and sequences configura-tion show as Type T,which mostly develops lower Wenchang Formation.However,as for rifted stage IB,northern tectonic activities be-come stronger,which results in migration of depocenter and subsidence center from north to south.And sequences configuration show as Type H which mainly develops upper Wenchang Formation.Moreover,migration of sequence stratigraphic unit generates multi-block along the direction of migration and also a combination of multi-stage oil and gas reservoirs,which are all of great potential for exploration.
Keywords：migrated sequence stratigraphic architectureepisodic tectonic activityWenchang FormationHuizhou depressionpetroleum geologystratigraphy
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：11( 840-850 )