DOI: 10.1306/07061514236
Scopus记录号: 2-s2.0-84949468882
论文题名: The fluvial and lacustrine sedimentary systems and stratigraphic correlation in the Upper Triassic Xujiahe Formation in Sichuan Basin, China
作者: Xu C. ; Gehenn J.-M. ; Zhao D. ; Xie G. ; Teng M.-K.
刊名: AAPG Bulletin
ISSN: 0149-1450
EISSN: 1558-9180
出版年: 2015
发表日期: 2015
卷: 99, 期: 11 起始页码: 2023
结束页码: 2041
语种: 英语
Scopus关键词: Lithology
; Rocks
; Sandstone
; Sedimentology
; Seismology
; Shale
; Shale gas
; Stratigraphy
; Well logging
; Classification scheme
; Coarse-grained sediments
; Exploration strategies
; Litho-stratigraphic
; Reservoir sandstones
; Sedimentary structure
; Sedimentary systems
; Stratigraphic correlation
; Sedimentary rocks
; breccia
; calcarenite
; conglomerate
; lacustrine deposit
; lithostratigraphy
; sandstone
; sediment analysis
; sedimentary structure
; shale
; siliciclastic deposit
; source rock
; stratigraphic correlation
; stratigraphy
; Triassic
; China
; Longmen Mountains
; Sichuan Basin
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: The calcarenites and siliciclastic sandstones in the Upper Triassic Xujiahe Formation are key targets of the unconventional gas exploration in Sichuan Basin. To resolve the long-debated stratigraphic correlation of the interfingering lithostratigraphic members between the different exploration blocks, a facies classification scheme integrating sedimentary structures in borehole images (BHI) and lithology from wireline logs is calibrated in the cored wells and extrapolated into the noncored wells. Three major sedimentary systems are recognized in Xujiahe by mapping the facies trends and paleocurrent directions in the coarse-grained sediments. One system may dominate over the others at different times and/or locations in the foreland basin in response to the oro-genic movements in the surrounding mountains. The Longmen Shan in the northwest of the study area is the main source provenance for the carbonate conglomerates and calcarenites. Meanwhile, the systems in the northeast and southeast deposited the sandstone wedges. Alternating lacustrine, swamp, and fluvial sediments are penetrated in both proximal and distal areas in the basin, although there is no indication of a basinwide lake in the Xujiahe period. Abundant sandy shale-breccia conglomerates containing large shale breccias, plant materials, and contorted shale blocks in association with thick foreset-bedded sandstones suggest subaqueous gravity flows possibly because of the collapse of a multistoried delta front. Characterization of these dynamic sedimentary systems through multidisciplinary interpretation of the seismic data, cores, BHI, and wireline logs is not only fundamental to the sedimentary analysis, but also the exploration strategy in the areas with optimal juxtaposition of reservoir sandstones and coaly source rocks. Copyright © 2015. The American Association of Petroleum Geologists. All rights reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84949468882&doi=10.1306%2f07061514236&partnerID=40&md5=422e6e5b9507733c1cd6355ce7e9f2ca
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13021
Appears in Collections: 过去全球变化的重建 影响、适应和脆弱性 科学计划与规划 气候变化与战略 全球变化的国际研究计划 气候减缓与适应 气候变化事实与影响
There are no files associated with this item.
Recommended Citation:
Xu C.,Gehenn J.-M.,Zhao D.,et al. The fluvial and lacustrine sedimentary systems and stratigraphic correlation in the Upper Triassic Xujiahe Formation in Sichuan Basin, China[J]. AAPG Bulletin,2015-01-01,99(11)