济阳坳陷不整合结构划分及矿物组合特征
Classification of Unconformity and Mineral Assemblage Characteristics in Jiyang Depression
DOI: 10.12677/ag.2025.158112, PDF,    国家科技经费支持
作者: 齐陆宁, 滕 飞, 胡 奇：中国石化胜利油田分公司海洋采油厂，山东 东营；黄文：中国石化胜利油田分公司海洋采油厂，山东东营
关键词: 济阳坳陷；不整合结构；地层不整合；风化壳；风化特征；Jiyang Depression； Unconformity； A Geological Interruption or Discontinuity； Weathered Crust； Characteristics of Material Erosion and Breakdown
摘要: 本文针对济阳坳陷的不整合结构层开展了系统研究，综合运用取心观察、矿物学分析、元素地球化学分析以及镜下鉴定等方法，识别出三种主要的不整合结构类型：Ⅰ型粘土风化壳不整合、Ⅱ型半风化岩石不整合和Ⅲ型无风化壳不整合。研究显示，各个风化带结构层的矿物成分及其元素地球化学特征均表现出明显差异。随着风化过程的加强，岩石中较为稳定的矿物，例如石英和黏土，其比例逐渐上升。在强烈风化影响下的黏土层中，高岭石等黏土矿物的比例显著超过半风化岩层，与此同时，长石等不稳定矿物的含量大幅下降。
Abstract: In this study, the unconformities within the Jiyang Depression are systematically investigated, and three primary types of unconformities are identified through core observation, mineralogical analysis, elemental geochemical analysis, and microscopic identification: Type I clay weathered crust unconformities, Type II semi-weathered rock unconformities, and Type III non-weathered crust unconformities. It is observed that the structural layers across different weathering zones exhibit significant variations in mineralogical composition and elemental geochemistry. As the degree of weathering intensifies, the relative abundance of stable minerals (such as quartz and clay minerals) in the rock progressively increases. In the most intensely weathered clay layers, the concentration of clay minerals (particularly kaolinite) is markedly higher compared to semi-weathered rocks, whereas the content of unstable minerals such as feldspar is substantially reduced.
文章引用：齐陆宁, 滕飞, 胡奇, 黄文. 济阳坳陷不整合结构划分及矿物组合特征[J]. 地球科学前沿, 2025, 15(8): 1202-1209. https://doi.org/10.12677/ag.2025.158112

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