摘要
通过对陇南煤田已知煤矿点有关资料的分析 ,研究了该区侏罗纪煤系的沉积特征和古构造展布特征。结果表明 ,陇南煤田的古构造对含煤沉积的控制作用 ,主要是通过对古河流展布和古气候的控制而体现的。不同层位的煤层 ,其下面普遍有河流相沉积 ,说明煤层是在古河流基础上发展起来的 ;适于成煤的气候自早侏罗世至晚侏罗世 ,具有由西向东迁移的特点 ,因此 ,陇南煤田的找煤勘探应沿古武都河的西北—东南延伸方向开展。
The Jurassic sedimentary characteristics and palaeo-structure distribution of Longnan coalfield are researched based on the data analysis of study area. The research indicated that the palaeo-structure control the coal-bearing deposits through its controlling the distribution of water system and climates. The layers under coal seams in the study area generally containing fluvial sediments suggested that the coal developed in fluvial system. From early to middle Jurassic the coal-forming climate is characterized by migrating from west to east. Therefore, the direction of Wudu palaeo-river is the suitable direction for coal exploration.
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
2004年第5期12-14,共3页
Coal Geology & Exploration
关键词
含煤沉积
地质特征
侏罗纪
陇南煤田
Jurassic
coal-bearing deposit
palaeo-structure
character
Longnan coalfield
