The depositional evolution and controlling factors of the Lower Triassic Baikouquan Formation, Northern Mahu Slope, Junggar Basin, NW China,Geological Journal

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The depositional evolution and controlling factors of the Lower Triassic Baikouquan Formation, Northern Mahu Slope, Junggar Basin, NW China
Geological Journal ( IF 1.4 ) Pub Date : 2020-12-21 , DOI: 10.1002/gj.4064
Kun Yang ₁ , Diao Zhou ₁ , Bo Yang ₁ , Jingshu Tong ₁ , Shuai Luo ₁ , Yanhui Chen ₂ , Naixiang He ₃ , Hailong Liu ₃ , Peng Luo ₃

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Significant hydrocarbon discoveries that resulted from conglomerate reservoirs in the Baikouquan Formation have been found in the last few years in Mahu Sag, Junggar Basin. Many studies have been conducted to describe the sedimentological complexity of reservoirs. However, few of them have been focused on the depositional characteristics and associated controlling factors in Baikouquan Formation. In this study, analysis of cores, thin sections, wireline logs, and seismic volume were carried out obtain detailed descriptions and interpretations of sedimentary microfacies, depositional evolution, and associated controlling factors. The results indicate that seven sedimentary microfacies are identified in Baikouquan Formation. Furthermore, depositional evolution of fan delta systems from bottom to top of Baikouquan Formation shows retrogradation in general. Tectonic activities along the northwestern fault zone, rising lake levels, arid climate, and high temperature together exert the controls on depositional evolution of fan delta systems in Baikouquan Formation.

中文翻译：

西北准Jung尔盆地北马虎斜坡下三叠统百口泉组沉积演化及控制因素

近年来，准kou尔盆地麻湖凹陷白口泉组砾岩储集层发现了重要的烃类发现。已经进行了许多研究来描述储层的沉积学复杂性。然而，很少有人关注白口泉组的沉积特征和相关的控制因素。在这项研究中，对岩心，薄片，电缆测井和地震体积进行了分析，以获得对沉积微相，沉积演化及相关控制因素的详细描述和解释。结果表明，在白口泉组中发现了七个沉积微相。此外，扇口三角洲系统从白口泉组的底部到顶部的沉积演化总体上显示为逆行。西北断裂带的构造活动，湖泊水位上升，干旱气候和高温共同控制了百口泉组扇三角洲系统的沉积演化。

更新日期：2020-12-21

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