Maturity and thermal evolution differences between two sets of Lower Palaeozoic shales and its significance for shale gas formation in south‐western Sichuan Basin, China

Wang, Ye; Qiu, Nansheng; Xie, Xiaomin; Ma, Zhongliang; Li, Longlong; Feng, Qianqian; Liu, Yang; Shen, Baojian; Borjigin, Tenger; Ni, Tao

doi:10.1002/gj.4121

Cited by 9 publications

(2 citation statements)

References 100 publications

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“…The Luzhou area is located in the southeastern part of Sichuan, on the outskirts of the Sichuan Basin in the north and the gently sloping Yunnan-Guizhou Plateau in the south, and thus has both basin and hilly topography. During the study, it was also found that a paleo uplift trend began to evolve in southeastern Sichuan from the Indo-Chinese period onwards (Wang et al 2021), providing an excellent dynamic basis for the subsurface and surface resources (Potter 2018) of the later Luzhou region. The Luzhou region has developed topographic features of high south and low north, as well as various landform types and agrotypes, because of the continuous change and coupling of land masses.…”

Section: Ecological Environment Analysis In Luzhou Regionmentioning

confidence: 82%

Investigate the mystery of Baijiu production region - Environmental factors for Luzhou (Sichuan, China)

Qingyan,

Yurun,

Fan

et al. 2023

Czech J. Food Sci.

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With a long tradition of brewing history, Chinese strong-flavour Baijiu (SFB) developed prosperously in the southwest, especially in Luzhou, and has existed for more than 300 years building craftwork and brewing techniques. As a product of the distillation of fermented grains, its production involves many microbial communities. During this time, microbial communities within production have burgeoned and evolved throughout the development history, enhancing unique texture and flavour. Meanwhile, environmental factors are critical constituents in the production, which provide the optimal conditions for processing procedures and various microorganisms, including externally controlled macro-environment and micro-environment of fermentation. By studying the correlation with environmental factors from macro and micro perspectives, we illustrated the bond with environmental symbiotic and holistic patterns of the intrinsic microbial community and fermentation characteristics. This review is essential to study and control the whole ecological conditions of the Baijiu fermentation process, aiming to gain insight into the dynamics of the microorganisms and ensure a traditional fermentation environment for quality control.

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Section: Ecological Environment Analysis In Luzhou Regionmentioning

confidence: 82%

Investigate the mystery of Baijiu production region - Environmental factors for Luzhou (Sichuan, China)

Qingyan,

Yurun,

Fan

et al. 2023

Czech J. Food Sci.

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show abstract

“…However, it is difficult to accurately distinguish the OM particles in high-over thermal evolution shales due to their small size and similar optical properties. Liu et al [35] and Wang et al [42] carried out Raman spectroscopy experiments on different macerals in shales at the high-over-mature stage, but no significant difference was found in the results of different macerals. The consistency of results confirms that for the high-over-mature samples, Raman spectroscopy performed on kerogens can provide rapid estimates of equivalent vitrinite reflectance, and there is no need to distinguish different organic macerals.…”

Section: Introductionmentioning

confidence: 99%

Characteristics and Differences Analysis for Thermal Evolution of Wufeng–Longmaxi Shale, Southern Sichuan Basin, SW China

et al. 2022

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The marine shale of the Upper Ordovician Wufeng Formation–Lower Silurian Longmaxi Formation is the main source rock and the target of shale gas exploration in the southern Sichuan Basin. The maturity of organic matter (OM) is a vital indicator for source rock evaluation. Due to the lack of vitrinite, the organic matter maturity of the Wufeng–Longmaxi Formations in the southern Sichuan Basin is difficult to accurately evaluate. In total, 33 core samples of the Wufeng–Longmaxi Formations in the southern Sichuan Basin were selected to observe the optical characteristics of solid bitumen and graptolites and measure their random reflectance. Simultaneously, Raman spectroscopic parameters of kerogen were also used to quantitatively analyze the change in maturity. By using Raman spectroscopic parameters as mediators, conversion equations between graptolite random reflectance (GRor) and equivalent vitrinite reflectance (EqVRo) were established. Taking the calculation results of EqVRo as constraints, the tectono-thermal evolution history of Wufeng–Longmaxi Shale in the southern Sichuan Basin is constructed through basin modelling. The results show that the maturity of Wufeng–Longmaxi Shale in the western Changning, Luzhou-western Chongqing, eastern Changning and Weiyuan areas decreases successively. The EqVRo falls in the ranges of 3.61%~3.91%, 2.92%~3.57%, 3.08%~3.25%, 2.41%~3.12%, and the average EqVRo is 3.73%, 3.30%, 3.18% and 2.80%, respectively. Thermal evolution in western Changning was controlled by the thermal effect of the Emeishan mantle plume and paleo-burial depth, while the thermal evolution of other areas was mainly controlled by paleo-burial depth. This study provides a reliable parameter for the evaluation of thermal maturity and makes a more accurate calibration of the maturity of the Wufeng–Longmaxi Formations in the southern Sichuan Basin; it also expounds the factors for the differences in thermal evolution in different parts of the area.

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Clumped isotopes of paired dolomite and calcite constraining alteration histories of ancient carbonate successions

Zou

Wang

et al. 2023

Chemical Geology

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Maturity and thermal evolution differences between two sets of Lower Palaeozoic shales and its significance for shale gas formation in south‐western Sichuan Basin, China

Cited by 9 publications

References 100 publications

Investigate the mystery of Baijiu production region - Environmental factors for Luzhou (Sichuan, China)

Investigate the mystery of Baijiu production region - Environmental factors for Luzhou (Sichuan, China)

Characteristics and Differences Analysis for Thermal Evolution of Wufeng–Longmaxi Shale, Southern Sichuan Basin, SW China

Clumped isotopes of paired dolomite and calcite constraining alteration histories of ancient carbonate successions

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