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Genetic sequence stratigraphic framework, depositional style, and hydrocarbon occurrence of the Upper Cretaceous QYN formations in the Songliao lacustrine basin, northeastern China

Liangqing Xue and William E. Galloway
Genetic sequence stratigraphic framework, depositional style, and hydrocarbon occurrence of the Upper Cretaceous QYN formations in the Songliao lacustrine basin, northeastern China
AAPG Bulletin (October 1993) 77 (10): 1792-1808

Abstract

The Qingshankou, Yaojia, and Nenjiang (QYN) formations in the Songliao basin of northeastern China can be used to illustrate the application of sequence stratigraphic analysis in a lacustrine setting and to provide a good example of hydrocarbon occurrence in a lacustrine stratigraphic framework. The QYN genetic stratigraphic sequence, bounded by maximum flooding surfaces or beds, is a low-frequency second-order sequence or supercycle in a lacustrine basin with a ramp margin. Use of subaerial unconformity and transgressive surfaces allows further subdivision of the QYN sequence into a progra-dational systems tract, lowstand prograding complex, and retrogradational systems tract. Delta-system styles are dominated by the physiography and relative intensity of fluvial and wave processes. Q1 and N1 maximum-flooding-related deposits used to identify the QYN genetic stratigraphic sequence boundaries are the main petroleum source rocks and regional seals, and play an important role in determining hydrocarbon distribution in the Songliao basin. The Y1 lowstand prograding complex and Y2 & 3 retrogradational systems tract in the northern part of the basin are the most important reservoir and producing intervals within the QYN sequence.


ISSN: 0149-1423
EISSN: 1558-9153
Coden: AABUD2
Serial Title: AAPG Bulletin
Serial Volume: 77
Serial Issue: 10
Title: Genetic sequence stratigraphic framework, depositional style, and hydrocarbon occurrence of the Upper Cretaceous QYN formations in the Songliao lacustrine basin, northeastern China
Affiliation: University of Texas at Austin, Department of Geological Sciences, Austin, TX, United States
Pages: 1792-1808
Published: 199310
Text Language: English
Publisher: American Association of Petroleum Geologists, Tulsa, OK, United States
Accession Number: 1993-035430
Categories: StratigraphyEconomic geology, geology of energy sources
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 4 tables
N46°00'00" - N47°00'00", E125°00'00" - E126°00'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute.
Update Code: 1993
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