A retreating fan-delta system in the Northwestern Junggar Basin, northwestern China—Characteristics, evolution and controlling factors

Jia, Haibo; Zhang, Liang; Li, Xinwei; Zhou, Hang; Wang, Linsheng; Gao, Yan

doi:10.1016/j.jseaes.2016.04.004

Cited by 40 publications

(25 citation statements)

References 30 publications

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“…The coarse‐grained succession of the lower Triassic developed along the piedmont in a lacustrine basin with weak oxidation and reduction (Li et al, ; Tang, Xu, Qu, Meng, & Zou, ). The deposits in Baikouquan Formation are fan‐delta genesis, which is a reasonable and consistent interpretation obtained by previous studies (Jia et al, ; Kuang et al, ; Tan et al, ; Tan et al, ; Yu et al, ; Zhang et al, ; Z. Zou, Li, Xu, Yu, & Meng, ; N. Zou et al, ). According to facies analysis from the cores and thin sections, combined with the particular characteristics from the well logs and seismic reflection, three sedimentary facies associations were identified in the coarse‐grained fan‐delta system: upper fan‐delta plain, lower fan‐delta plain, and fan‐delta front.…”

Section: Sedimentary Characteristicssupporting

confidence: 90%

“…The depositional process, facies association, sequence stratigraphy, depositional model, and evolution of fan‐deltas developed in distinct tectonic and climate settings have been documented widely based on outcrops and subsurface data (Blair & McPherson, ; Horton & Schmitt, ; Hwang, Chough, Hong, & Choe , ; Jia et al, ; M. Lopez‐Blanco, Marzo, Burbank, et al, ; M. Lopez‐Blanco, Marzo, & Pina, ; McPherson , Shanmugam, & Moiola, , ; Patranabis‐Deb & Chaudhuri, ). However, the dominant controlling mechanisms on the origin and evolution of fan‐deltas are still controversial, and analysing tectonic, climate, and eustasy factors as controlling mechanisms is required (Dart, Collier, Gawthorpe, Keller, & Nichols, ; Gawthorpe & Colella, ; Gawthorpe, Fraser, & Collier, ; Ori, Roveri, & Nichols, ; Poulimenos, Zelilidis, Kontopoulos, & Doutsos, ; Ulicny, ).…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, hydrocarbon exploration in conglomeratic fan‐delta deposits with rapid lateral and vertical variations is particularly difficult. Therefore, more detailed investigations of the architecture and evolution are needed (Jia et al, ; Ori et al, ; Patranabis‐Deb & Chaudhuri, ; Tan et al, ).…”

Section: Introductionmentioning

confidence: 99%

“…The hydrocarbon exploration is mainly controlled by the facies distribution and reservoir characteristics of the coarse‐grained depositional system (Kuang et al, ; Lei et al, ). Previous works on the depositional system mainly focused on the local oil‐producing field within a limited area (Jia et al, ; Li et al, ; Zhang et al, ; N. Zou et al, ). This study is the first to present a detailed study of sedimentology of the fan delta system for the entire Mahu Depression.…”

Section: Introductionmentioning

confidence: 99%

“…distinct tectonic and climate settings have been documented widely based on outcrops and subsurface data (Blair & McPherson, 2008;Horton & Schmitt, 1996;Hwang, Chough, Hong, & Choe, 1995;Jia et al, 2016;M. Lopez-Blanco, Marzo, Burbank, et al, 2000;McPherson, Shanmugam, & Moiola, 1987, 1988Patranabis-Deb & Chaudhuri, 2007).…”

mentioning

confidence: 99%

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Sedimentary characteristics and controls of a retreating, coarse‐grained fan‐delta system in the Lower Triassic, Mahu Depression, northwestern China

Liu

Tan

et al. 2018

Geological Journal

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In recent years, enriched hydrocarbon reservoirs have been largely founded in the Lower Triassic Baikouquan Formation, in the Mahu Depression of Junggar basin, northwestern China. Accordingly, the sedimentologic complexity of associated deposits has been extensively studied, though most of them focused on local oil‐producing fields separately. In this research, a detailed sedimentary study of the entire Mahu Depression has been conducted, which include several aspects of sedimentary characteristics, sediment provenance, evolution, and controls of the coarse‐grained fan‐delta system. According to facies features recognized from cores, thin sections, well logs, and seismic data, three sedimentary facies associations were identified: upper fan‐delta plain, lower fan‐delta plain, and fan‐delta front. Furthermore, four depositional systems (Xiazijie, Haungyangquan, Karamay, and Xiayan fan‐delta) around the Mahu Depression were recognized by the distribution of heavy mineral assemblages and change of ZTR index (percentage of Zircon, Tourmaline, and Rutile in the total transparent heavy mineral assemblage). Based on the analysis of facies and sediment provenance, the temporal and spatial distribution of the fan‐delta system were reconstructed associated with the variation of net/gross ratio. As characterized by decreasing‐upward of net/gross ratios and fining‐upward trend of grain size, the evolution of the fan‐delta succession showed an overall retreating pattern which was mainly controlled by lake level rising and rapid tectonic subsidence. Within the retreating pattern, hydrocarbons were trapped in the middle deposits with reservoir space produced by fan‐delta front and lower fan‐delta plain, which were encased between the top transgressive lacustrine mudstones and the bottom debris‐flow deposits produced by upper fan‐delta plain. These findings of the research throw light on the phenomena that the stratigraphy trap for hydrocarbon accumulation could be constructed by retreating, coarse‐grained fan‐delta systems.

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Section: Sedimentary Characteristicssupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Sedimentary characteristics and controls of a retreating, coarse‐grained fan‐delta system in the Lower Triassic, Mahu Depression, northwestern China

Liu

Tan

et al. 2018

Geological Journal

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Controls of a Triassic fan‐delta system, Junggar Basin, NW China

Jia

Zhang

Wang³

et al. 2018

Geological Journal

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Both sedimentology and sequence stratigraphy variability in the deltaic area are distinguished in the fan‐delta system of the Northwestern Junggar Basin. Sediment supply plays a significant role in controlling the fan‐delta petrology, evolution, and depositional processes and the delivery of sediment into deeper parts of the basin. The results of this study show that variations in the lithology of the sediment supply control the fan‐delta petrology and spatial and temporal variations in sediment supply influence the location and shifting of depocentres. A fining‐upward fan‐delta succession developed as accommodation rates outpaced the sediment supply rate. Frequent flood events were mostly recorded by sediment gravity flow deposits, which in turn influenced the geometry of the sandstone bodies and their reservoir quality. Hyperpycnal flow was a significant delta front process and an important mechanism for sediment delivery into deeper waters, favoured by the combination of denudation of coastal ranges and the fresh waters of the receiving basin. This study highlights that a detailed understanding of variations in sediment supply is essential to accurately predict sediment partitions in a delta system and the delivery of coarse‐grained sediments into deeper parts of lacustrine basins.

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Sedimentary characteristics and internal architecture of a river-dominated delta controlled by autogenic process: implications from a flume tank experiment

et al. 2019

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Autogenic processes are widely found in various sedimentary systems and they play an important role in the depositional evolution and corresponding sedimentary architecture. However, autogenic processes are often affected by changing allogenic factors and are difficult to be identified and analyzed from modern and ancient records. Through the flume tank experiment under constant boundary conditions, the depositional process, evolution principles, and the sedimentary architecture of a river-dominated delta was presented, and a corresponding sedimentary architecture model was constructed. The evolution of river-dominated delta controlled only by autogenic process is obviously periodic, and each autogenic cycle can be divided into an initial progradational stage, a middle retrogratational stage, and a late aggradational–progradational stage. In the initial progradational stage, one feeder channel incised into the delta plain, mouth bar(s) was formed in front of the channel mouth, and small-scale crevasse splays were formed on the delta plain. In the middle retrogradational stage, the feeder channel was blocked by the mouth bar(s) which grew out of water at the end of the initial stage, and a set of large-scale distributary splay complexes were formed on the delta plain. These distributary splay complexes were retrogradationally overlapped due to the continuous migration of the bifurcation point of the feeder channel. In the late aggradational–progradational stage, the feeder channel branched into several radial distributary channels, overlapped distributary channels were formed on the delta plain, and terminal lobe complexes were formed at the end of distributary channels. The three sedimentary layers formed in the three stages constituted an autogenic succession. The experimental delta consisted of six autogenic depositional successions. Dynamic allocation of accommodation space and the following adaptive sediments filling were the two main driving factors of the autogenic evolution of deltas.

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A retreating fan-delta system in the Northwestern Junggar Basin, northwestern China—Characteristics, evolution and controlling factors

Cited by 40 publications

References 30 publications

Sedimentary characteristics and controls of a retreating, coarse‐grained fan‐delta system in the Lower Triassic, Mahu Depression, northwestern China

Sedimentary characteristics and controls of a retreating, coarse‐grained fan‐delta system in the Lower Triassic, Mahu Depression, northwestern China

Controls of a Triassic fan‐delta system, Junggar Basin, NW China

Sedimentary characteristics and internal architecture of a river-dominated delta controlled by autogenic process: implications from a flume tank experiment

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