山东煤炭科技2025，Vol.43Issue(4)：147-151,5.DOI:10.3969/j.issn.1005-2801.2025.04.030
甘肃省金塔县金塔盆地天泉寺一带含煤地层时代浅析
Brief Analysis of the Age of Coal Bearing Strata in the Tianquan Temple Area of Jinta Basin in Jinta County of Gansu Province
鲜红兵 1杨熙1
作者信息
- 1. 甘肃煤田地质局一四五队,甘肃 张掖 734500
- 折叠
摘要
Abstract
The Tianquan Temple area in Jinta Basin has typical coal sedimentary characteristics of the northwest region and is an important area for coal resource occurrence.However,due to technical limitations such as single early geological work,geological exploration means and so on,there is controversy over the division of coal bearing strata in the area.Based on the systematic collection of achievement data on Jinta Basin and its coal bearing strata within the area,a detailed description of the coal bearing strata is carried out through field surveys,combined with means such as the basic survey items of drilling strata division,sporopollen fossil sample analysis and testing and others implemented in this area of Gansu Province in 2022,as well as the coal forming sedimentary environment and paleogeographic environment in the area.The age of coal bearing strata in the Tianquan Temple area of Jinta Basin is identified as belonging to the Mesozoic Cretaceous.In the identification of sporopollen composite sample,gymnosperm pollen is found to have a higher content in the composite sample,accounting for an average of 84.63%,while fern spore content is relatively low.The Classopolis content is generally low,and Cicatricosisporites minor and Ephedripites(Spiralipites)spp.are found.Therefore,it is speculated that the output stratigraphic age of the sporopollen combination in this group may be the Early Cretaceous.关键词
金塔盆地/侏罗世/白垩世/孢粉样Key words
Jinta Basin/Jurassic/Cretaceous/sporopollen sample分类
地质学引用本文复制引用
鲜红兵,杨熙..甘肃省金塔县金塔盆地天泉寺一带含煤地层时代浅析[J].山东煤炭科技,2025,43(4):147-151,5.
