潞安矿区构造-热演化特征

发布时间：2018-06-14 15:41

  本文选题：潞安矿区 + 构造　； 参考：《煤田地质与勘探》2016年06期

【摘要】：通过对潞安矿区区域地质背景研究,在镜质体反射率测试分析的基础上,对研究区多个井田含煤地层的埋藏史及其热史进行了恢复。结果表明,早三叠世—侏罗纪,研究区构造运动强烈,埋深增大至3 500 m左右,经历较高古地温(120~135℃),热流达到第一个峰值(76~89 m W/m2);侏罗纪晚期—早白垩世,受燕山期火山运动及深层侵入岩影响,研究区含煤地层温度骤升至160~180℃并伴随出第二个古热流峰值(90~99 m W/m2)。通过比对,认为沁水盆地东南缘潞安矿区所处构造 热演化程度较沁水盆地中部偏高。
[Abstract]:Based on the analysis of vitrinite reflectance, the burial history and thermal history of coal-bearing strata in several coalfields in Luan mining area were recovered. The results show that during the early Triassic-Jurassic period, the tectonic movement in the study area was strong, the buried depth increased to about 3 500 m, the heat flow reached the first peak value of 7689 m W / m2, and the depth of burial increased to about 3 500 m, and the heat flow reached the first peak value, from late Jurassic to early Cretaceous. Under the influence of Yanshanian volcanic movement and deep intrusive rocks, the temperature of coal-bearing strata in the study area has risen sharply to 160 ~ 180 鈩，

本文编号：2017974