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Giant sublacustrine landslide in the Cretaceous Songliao Basin, NE China
Pan, Shuxin1,2; Liu, Caiyan1,2; Li, Xiangbo1,2; Liang, Sujuan1,2; Chen, Qilin1,2; Zhang, Wenting1,2; Zhang, Shuncun3
2019-12-01
Source PublicationBASIN RESEARCH
ISSN0950-091X
Volume31Issue:6Pages:1066-1082
AbstractMass failure deposits in lacustrine settings are some of the most understudied facies associations in the ancient or modern rock record. We integrated seismic data and well logs to investigate the external morphology, internal architecture and deformation and reservoir distribution of the sublacustrine landslides in the Cretaceous Nengjiang Formation of the Songliao Basin (SLB). A large-scale sublacustrine landslide, named the Qi-Jia sublacustrine landslide (QJSL), has been identified in the Nengjiang Formation of the SLB. The QJSL is currently the largest known sublacustrine landslide in the world. This landslide covers an area that exceeds 300 km(2), with an estimated volume of 30 km(3). Seismic imaging and mapping reveal that the QJSL can be recognized by several distinguishing seismic characteristics: discontinuous and internal chaotic seismic facies, compressional structures in the downslope region, irregular top and basal surfaces and erosional grooves in basal shear surfaces. The QJSL is 20-200 m thick, and is composed of a succession of fine-grained deposits. Sandy layers are present but sparse and thinner than 16 m, and form reservoirs of the petroleum discoveries in this area. Our analyses show that the mechanism that triggered the collapse of the QJSL is attributed to rapid deposition and deltaic progradation. This study demonstrates that sand-rich sublacustrine landslides formed at delta front slope can serve as conventional reservoirs in the lake centre, and provide a new target for subaqueous hydrocarbon exploration and development.
Keywordsublacustrine landslide the Cretaceous the Nengjiang Formation the Songliao Basin
DOI10.1111/bre.12357
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS KeywordMASS-TRANSPORT COMPLEXES ; SUBMARINE LANDSLIDES ; SEISMIC INTERPRETATION ; NORTHEAST CHINA ; EVOLUTION ; DEPOSITS ; LAKE ; EXAMPLES ; SYSTEM ; TSUNAMI
Language英语
Funding ProjectNational Natural Science Foundation of China[41872116] ; National Natural Science Foundation of China[41772099]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000495163000003
PublisherWILEY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/95771
Collection兰州油气中心
Corresponding AuthorPan, Shuxin
Affiliation1.PetroChina, Res Inst Petr Explorat & Dev Northwest, Lanzhou, Gansu, Peoples R China
2.CNPC, Key Lab Reservoir Descript, Lanzhou, Gansu, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Lanzhou, Gansu, Peoples R China
Recommended Citation
GB/T 7714
Pan, Shuxin,Liu, Caiyan,Li, Xiangbo,et al. Giant sublacustrine landslide in the Cretaceous Songliao Basin, NE China[J]. BASIN RESEARCH,2019,31(6):1066-1082.
APA Pan, Shuxin.,Liu, Caiyan.,Li, Xiangbo.,Liang, Sujuan.,Chen, Qilin.,...&Zhang, Shuncun.(2019).Giant sublacustrine landslide in the Cretaceous Songliao Basin, NE China.BASIN RESEARCH,31(6),1066-1082.
MLA Pan, Shuxin,et al."Giant sublacustrine landslide in the Cretaceous Songliao Basin, NE China".BASIN RESEARCH 31.6(2019):1066-1082.
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