| 准噶尔盆地玛湖凹陷百口泉组相对湖平面升降规律研究 |
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| 引用本文： | 张坦,张昌民,瞿建华,朱锐,袁瑞,潘进,陶金雨.准噶尔盆地玛湖凹陷百口泉组相对湖平面升降规律研究[J].沉积学报,2018,36(4):684-694. |
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| 作者姓名： | 张坦 张昌民 瞿建华 朱锐 袁瑞 潘进 陶金雨 |
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| 作者单位： | 1.长江大学地球科学学院, 武汉 430100; |
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| 基金项目： | 国家科技重大专项(2016ZX05027-02-007)，国家自然科学基金项目(41302096) |
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| 摘 要： | 准噶尔盆地三叠系百口泉组相对湖平面升降规律认识不清，制约了对百口泉组沉积体系分布与演化的分析。在高分辨率层序地层学理论指导下，综合钻井、测井等资料，采用传统定性分析与定量的测井小波变换分析相结合的方法，对准噶尔盆地玛湖凹陷斜坡区三叠系百口泉组进行高精度层序地层划分，将百口泉组定量划分为1个长期层序，4个中期层序，16个短期层序，126个超短期层序；对126个超短期层序进行Fisher图解的定量分析，结果显示百口泉组沉积时期湖平面升降总体表现出持续上升的特征，内部又可划分为多个次级湖平面升降旋回，百口泉组一段（T1b1）、百口泉组二段（T1b2）、百口泉组三段（T1b3）与三次湖平面持续上升过程相对应，百口泉组三段（T1b3）湖平面达到百口泉组时期的最大规模。通过对比前人研究成果和钻井地质信息，认为相对湖平面升降曲线具有很高的可信度。
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| 关 键 词： | 相对湖平面升降 高分辨率层序地层 测井小波变换 Fisher图解 百口泉组 准噶尔盆地 |
| 收稿时间： | 2017-06-23 |
A Research on Relative Lacustrine Level Changes of the Lower Triassic Baikouquan Formation in Mahu Sag of Junggar Basin |
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| ZHANG Tan,ZHANG ChangMin,QU JianHua,ZHU Rui,YUAN Rui,PAN Jin,TAO JinYu.A Research on Relative Lacustrine Level Changes of the Lower Triassic Baikouquan Formation in Mahu Sag of Junggar Basin[J].Acta Sedimentologica Sinica,2018,36(4):684-694. |
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| Authors: | ZHANG Tan ZHANG ChangMin QU JianHua ZHU Rui YUAN Rui PAN Jin TAO JinYu |
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| Institution: | 1.College of Geoscience, Yangtze University, Wuhan 430100, China;2.Research Institute of Exploration and Development, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China |
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| Abstract: | The Triassic Baikouquan Formation in Junggar Basin has not been clear about the characteristics of relative lake level changes, which restricts the analysis of their distribution and evolution of the sediments. This formation can be divided into one long-term sequence cycle, four mid-sequence cycles, 16 short-term sequence cycles, 126 super short-term sequence cycles on the high-resolution sequence stratigraphic division method combined with traditional qualitative analysis and quantitative logging wavelet transform analysis,under the guidance of high-resolution sequence stratigraphy theory, comprehensive drilling, logging and other information. The 126 super short-term sequence cycles were Fisher plots. Analysis of the Fisher plots shows the characteristics of relative lacustrine level changes. The Baikouquan Formation relative lacustrine level change is a continuous lacustrine transgression process.T1b1, T1b2 and T1b3, respectively, corresponds to a large-scale lacustrine transgression process, and each the large lacustrine transgression process contains several times of the lake level rise and fall cycle, and at T1b3 lake level reached the largest area. Compared with previous results and drilling geological information, we find that the lake curve has high reliability. |
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