项目名称： 煤系细粒沉积微细结构及其演化机制

项目编号： No.41502151

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 天文学、地球科学

项目作者： 李莹

作者单位： 山东省煤田地质规划勘察研究院

项目金额： 22万元

中文摘要： 本项目拟选择鲁西及邻区石炭—二叠纪煤系细粒沉积岩为研究对象，运用沉积学、储层地质学、煤地质学、高分辨率层序地层学等多学科交叉的方法和思路，采用现代测试分析、精细沉积细层刻画与微观定量表征、最优化测井解释等方法和技术，将煤系中细粒沉积的所有参数综合成一个多维地质信息集合体，进行煤系细粒沉积的微细结构及其演化机制研究。本研究首先分析煤系细粒沉积类型、微序列旋回、微相类型及其组合序列；在此基础上，根据煤系细粒沉积转化条件与过程特点，泥炭及植物碎屑注入规律、含有机质丰度、沉积构造以及小型水动力学界面等研究，深入探究细粒沉积与有机质演化、聚集的耦合关系，建立煤系细粒沉积的微细结构模型。最后，研究煤系细粒沉积的动力学机制与水域体制特点，建立不同结构类型细粒沉积的成因模式。本研究紧密结合聚煤盆地演化与泥炭堆积过程中的构造—沉降—沉积充填动力学特点，揭示细粒沉积与泥炭聚集耦合作用过程中的沉积动力学机制。

中文关键词： 煤系；海陆交互相沉积；微细结构；细粒沉积；定量表征

英文摘要： Based on the methods and ideas of sediment logy, reservoir geology, coal geology, high-resolution sequence stratigraphy , and the multidisciplinary, the research will take Luxi and its adjoining areas for a typical example to study the microstructures of fine-grained sediments and its evolution mechanism of Carboniferous-Permian coal-bearing succession by adopting modern test analysis, fine sedimentary fine layer portrayed and micro quantitative characterization, optimal log interpretation and other methods and technologies, Integrateall parameter of fine-grained sediments in coal series into an aggregation of multidimensional geological information. This research first analysis coal fine-grain sedimentary types, micro-sequence cycles, micro-facies types and their combination sequence; Then according to the characteristics of coal fine-grained sedimentary transformation conditions and process, peat and the plant debris inject law, organic substance abundance, sedimentary structure, and small hydrodynamic interface and other studies, the relationship of fine-grain deposition, organic matter evolution, and gathered of coupling will deeply investigated and microstructures model of coal fine-grain sediment will be established.Finally, coal fine-grain sediment dynamics mechanism and characteristics of water system will be studied in order to establish genetic models of fine-grain sediments of different structure types. This study will closely integrate the tectonic-subsidence-sedimentary filling dynamics characteristics of coal-accumulation basin evolution and peat accumulation process, which reveal the sediment dynamics during fine-grained sediment sand peat accumulation coupling process.

英文关键词： coal series;deposits with marine and continental interaction ;micro-fine structures;fine-grain sediment;quantitative characterization