WITHDRAWN:Prediction of Permian karst reservoirs in the Yuanba gas field, northern Sichuan Basin, China

Hao, Yuxin; Bell, Rebecca; Hu, Dongfeng; Fan, Rui; Wang, Yanghua

doi:10.1016/j.marpetgeo.2023.106160

Cited by 2 publications

(3 citation statements)

References 34 publications

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“…Mengzi Fault and Chitu Fault deflected from NW to NE at the main stream of Shuiluo River. The distribution of these faults within the SRC mainly presents a spatial distribution feature of dense in the central and southern regions and dispersed in the northern regions, and most of these faults are thrust faults with generally strong activity (Hao et al 1990;Tang et al 1993;Xu et al 2016) . Therefore, we speculate that this may be a significant factor in the difference in SRC activity between the central southern region and the northern region (Figs.…”

Section: Tectonicsmentioning

confidence: 99%

Fluvial geomorphic parameters of the Shuiluo River Catchment and their tectonic implications, SE Tibetan Plateau

Yao,

Lyu,

Lei

et al. 2024

Prog Earth Planet Sci

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The Shuiluo River Catchment (SRC) is the front zone of the southeast compression and uplift of the Tibetan Plateau, with intense tectonic activity. In the basin, a series of regional large NW–SE trending active faults are developed. Studying clearly the geomorphic evolution of the SRC is conducive to further understanding the uplift and expansion mechanism of the SE edge of Tibetan Plateau. Our research was based on geographic information system, numerical analysis tool, and digital elevation model data, to extract six geomorpic parameters (hypsometric integral, asymmetry factor, basin shape ratio, valley floor width–valley height ratio, normalized channel steepness index and index of relative active tectonics) in SRC. After eliminating the impacts of climate, catchments area, and glacier, the geomorphic evolution of the SRC is mainly affected by geological structure and differential tectonic uplift movement; in the upstream and midstream (upper part), the shape of valleys and stream longitudinal profile shapes are affected by lithology; affected by geological structure and tectonic uplift, the tectonic activity in the midstream and downstream is relatively strong, and the intensity of activity in the downstream is stronger than that in the midstream, which may suggest that the faults’ activity in the downstream is stronger; the index of relative active tectonics values of the SRC are consistent with the regional seismic intensity, field-work and low-temperature thermochronology which indicates it is reasonable to use the fluvial geomorphic parameters to study the regional geomorphic evolution. The morphological parameters we extracted show different values in different regions of SRC, which may be the result of differential uplift in the southeastern of the Tibetan Plateau.

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Section: Tectonicsmentioning

confidence: 99%

Fluvial geomorphic parameters of the Shuiluo River Catchment and their tectonic implications, SE Tibetan Plateau

Yao,

Lyu,

Lei

et al. 2024

Prog Earth Planet Sci

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“…Faults and fractures are also important factors promoting karst development [10], especially in sedimentary bodies with extremely poor original permeability within the platform, which is crucial for promoting karst processes [10,20]. The fault itself, which communicates to the deep, is a good channel for atmospheric fresh water, promoting the infiltration and dissolution of atmospheric fresh water from the surface to deeper strata through the fault [11,40].…”

Section: Fault and Jointmentioning

confidence: 99%

“…The Sichuan Basin has developed karst landforms in different regions and layers. Currently, research on karst landforms in the Sichuan Basin mainly focuses on morphological description [18] and oil and gas geological significance [11,19,20], with less attention paid to geological spatiotemporal evolution. This study conducted an outcrop geological survey (including cave shape, rock types, sedimentological characteristics, and geologic structures); completed 14 C isotope dating, carried out a carbon and oxygen isotope analysis of stalactite, identified the impact of sedimentation, geologic structures, and climate environment during the development of the Panlongdong karst cave; and established a formation model.…”

Section: Introductionmentioning

confidence: 99%

Geological Environment and Controlling Factors of Panlongdong Karst Cave in Northeastern Sichuan Basin

Tian

Shun

et al. 2023

Energies

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The karst landforms in northeastern Sichuan Basin are widely developed, but the understanding of the geological characteristics, controlling factors, and spatiotemporal evolution process of karst caves is still unclear. The research object of this study is the Panlongdong karst cave in the northeastern Sichuan Basin. An outcrop geological survey was carried out, 14C isotope dating of stalactite was performed, carbon and oxygen isotope analysis was completed, and the formation process was identified. The interior of this cave is covered with karst sediments, and its original rocks are the Permian Wujiaping and Changxing formations, with secondary dissolution that has developed. The rock types, geological structure (fault, joint), and climate are the main factors behind the formation of the Panlongdong karst cave. The sedimentation of biogenic reefs and carbonate rocks is a fundamental geological condition for the development of karst processes. The geological structures provide channels for the dissolution of atmospheric precipitation. From 43.5 ka.B.P., six continuous changes in climate have intensified the formation of karst landforms. Warm, humid, and cold dry climate conditions have repeatedly occurred, and carbonate rocks have experienced varying degrees of karstification under the influence of climate. Through the four stages of structural breakup and surface dissolution, secondary cranny dissolution, selective dissolution, and detachment of rock mass and karst sediment formation, the Panlongdong karst cave was ultimately formed. The formation process of the Panlongdong karst cave is of great significance for understanding the evolution of the paleoenvironment in the northeastern Sichuan Basin.

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WITHDRAWN:Prediction of Permian karst reservoirs in the Yuanba gas field, northern Sichuan Basin, China

Cited by 2 publications

References 34 publications

Fluvial geomorphic parameters of the Shuiluo River Catchment and their tectonic implications, SE Tibetan Plateau

Fluvial geomorphic parameters of the Shuiluo River Catchment and their tectonic implications, SE Tibetan Plateau

Geological Environment and Controlling Factors of Panlongdong Karst Cave in Northeastern Sichuan Basin

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