Criteria for differentiating microbial-caddisfly bioherms from those of marine polychaetes in a lacustrine setting: Paleocene second member, Funing Formation, Subei Basin, East China

Zhou, Xuewen; Jiang, Zaixing; MacEachern, James A.

doi:10.1016/j.palaeo.2020.109974

Cited by 6 publications

(2 citation statements)

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“…The Qaidam Basin exhibited high‐quality source rocks within the Ganchaigou Formation and Dameigou Formation, whereas the Nanxiang Basin contained them within the Hetaoyuan Formation. Last, the Jianghan Basin featured high‐quality source rocks within the Qianjiang Formation and Xingouzui Formation (Li Qiqi et al, 2021; Song et al, 2019; Wang et al, 2020; Zhang et al, 2019; Zhou et al, 2020).…”

Section: Sedimentary Characteristics Of the Saline Lacustrine Basinmentioning

confidence: 99%

Organic matter enrichment mechanism in saline lacustrine basins: A review

Wang

Bai³

et al. 2023

Geological Journal

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Organic‐rich shale in saline lacustrine basins holds significant importance as a source rock for conventional hydrocarbon exploration and has emerged as a prominent target for unconventional hydrocarbon exploration and development in recent years. Based on saline lacustrine basins, this paper provides a summary of the organic matter enrichment mechanisms in saline lacustrine basins, considering sedimentary characteristics, biological activities, factors for the organic matter enrichment and consumption, and hydrocarbon generation. The implications for these factors are discussed in relation to the distribution prediction of high‐quality lacustrine shale district settings and the exploration and development of shale oil. Saline lacustrine basins undergo distinct evolutionary stages, each corresponding to different sedimentary stages involving carbonate minerals, sulphate minerals, and alkaline minerals. Moreover, these basins exhibit diverse biological types and experience extensive biological activities. The prosperity of organisms and the accumulation of sedimentary organic matter are ensured by halophilic organisms. Organic matter enrichment in saline lacustrine basins is influenced by two main aspects: the primary productivity of organic matter, which is promoted by the proliferation of halophilic organisms, and the efficient preservation of organic matter facilitated by the strong reducing environment resulting from promoted water salinity stratification. The organic matter consumption in saline lacustrine basins involves bacterial sulphate reduction (BSR) in the early stages, thermochemical sulphate reduction (TSR) in the late stages, and dilution of salt minerals with higher depositional rates. of the presence of salt beds and saline minerals positively influences hydrocarbon generation and expulsion in organic‐rich shale within saline lacustrine deposition. Consequently, continental saline lacustrine basins in China offer favourable conditions for the formation of organic‐rich shale and present broad prospects for the exploration of shale oil and gas resources.

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Section: Sedimentary Characteristics Of the Saline Lacustrine Basinmentioning

confidence: 99%

Organic matter enrichment mechanism in saline lacustrine basins: A review

Wang

Bai³

et al. 2023

Geological Journal

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“…The Palaeogene consists of Funing Formation, Dainan Formation, and Sanduo Formation (Figure 2). Among them, Funing Formation possesses primary source rocks (Li, Zhu, Liu, Zhu, & Li, 2021; Liu et al, 2020; Liu, He, et al, 2021; Liu, Jiang, et al, 2021; Liu, Jin, et al, 2021; Quaye, Jiang, & Zhou, 2018; Zhou, Jiang, & MacEachern, 2020). In contrast, Dainan Formation and Sanduo Formation act as the main reservoirs (Zhang et al, 2016; Zhou et al, 2018).…”

Section: Geological Settingsmentioning

confidence: 99%

The quantitative evaluation of fault sealing during the Cenozoic in Gaoyou Depression, Subei Basin

2022

Geological Journal

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The quantitative evaluation of fault sealing is conducted based on comprehensive analysis of mechanism and type analysis of fault seal, fault seal evaluation, and case study analysis. The results indicate that the properties of fault sealing are the interaction of fault order, net-to-gross ratio, fault activity, mud distribution on fault walls, fault dip, and buried depth. In addition, there are three types of fault sealing, including juxtaposition seal, fault rock seal, and cementation seal. Furthermore, the opening and closing of faults play an essential role in controlling hydrocarbon migration and accumulation. Finally, the fault sealing plays a controlling role in reservoir preservation.

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