三江盆地群城子河组—穆棱组层序地层对比

 根据露头、岩心、测井、地震、古生物和地化分析资料，建立三江、勃利、鸡西和虎林盆地城子河组（包括七虎林组、云山组）至穆棱组（珠山组）层序地层格架。通过海侵事件、煤层、古生物证据及构造事件进行盆地间层序地层对比分析，进一步揭示“统一盆地”概念，其中构造事件和海侵事件引起的区域不整合和海相夹层是主要对比标志。将三江盆地群统一划分为8个层序，层序I～VIII发育遵循由东向西、由南向北逐渐扩展的规律。层序发育主要受控于构造沉降、海平面变化及气候。这是首次将三江地区作为“统一盆地”进行层序分析，对进一步油气勘探具有指导意义。

Sequence Stratigraphy Correlation of Chengzihe-Muleng Formation in Sanjiang Basins

Based on the outcrop, core, logging data, seismic profile, palaeontologica and geochemistry materials, sequence stratigraphic framework of Chengzihe (Qihulin and Yunshan Formation) and Muleng Formation (Zhushan Formation) in Sanjiang, Boli, Jixi and Hulin Basin are established. Contrasting and analyzing among basins according to the marine events, coal bed, palaeontologic fossils and tectonic movements, this paper further indicates that Sanjiang Basins is a "uniform basin". Regional unconformity and marine interbeds caused by tectonic movements and marine events are the key marks of basin comparison, and coal bed and palaeontologic biocoenosis influenced by climate are the additional marks. The "uniform basin" can be divided into 8 sequences. Sequence I to VIII developes gradually from east to west and from south to north. Different basin has different quantity of sequence. Boli basin has all the 8 sequences and the sedimentary centre is in Boli Basin. The sequence distribution characteristics are controlled by tectonic, sea level changes and climate. The sea level changes control the sequence deposition, while tectonic controls sequence relict, and the climate controls the lithologic and palaeontologic cycles. It is the first time to study the sequence stratigraphy taking Sanjiang basins as a unit and it has an important significance to further exploration for petroleum.