李晓静,刘莹,王东东,刘海燕,刘福胜

• 1:山东科技大学地球科学与工程学院
• 2:中煤地质集团有限公司

摘要(Abstract)：

基于对陆表海盆地含煤沉积中海侵事件沉积、浅水三角洲沉积特征及陆相湖泊细粒沉积旋回特征比较分析,就能源岩系中沉积旋回类型,如异旋回、自旋回以及混合旋回及其对称性问题进行了探讨,认为异旋回多具非对称性特点,而自旋回则多具对称性特点。在沉积旋回识别与分析中,要特别重视事件性沉积分析,尤其是大型事件沉积是盆地或沉积体系外部的重要因素,往往形成非对称性异旋回,可进行盆地范围甚至超出盆地范围的对比和追踪。通过陆相湖泊细粒沉积旋回结构分析,认为高频旋回既有自旋回,也存在异旋回,细粒沉积旋回的成因比较复杂,受构造背景、气候、物源、环境等因素的综合影响,自旋回对异旋回具有改造作用。细粒沉积中的事件沉积具有特殊性和典型性,季风、干旱、洪水等事件,甚至风暴事件等对细粒沉积旋回的形成具有控制性影响,米兰科维奇旋回多为异旋回。

关键词(KeyWords)： 自旋回;异旋回;混合旋回;对称性与非对称性

Abstract:

Keywords:

基金项目(Foundation): 国家基金项目:不同盆地背景下细粒沉积纹层成因机制与演化模式的比较研究(41672096)

作者(Author): 李晓静,刘莹,王东东,刘海燕,刘福胜

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