公婆泉勘查区含煤地层时代研究

Research on Age of Coal-bearing Strata in Gongpoquan Exploration Area

甘肃省肃北县公婆泉勘查区含煤地层,由于地质工作程度低,古生物资料比较缺乏,对含煤地层时代认识尚不一致。为解决含煤地层时代及探讨找煤前景,在勘查区选择钻孔采集了孢粉样品。孢粉样品经分析获得了较为丰富的化石,经研究对比确定当前组合时代为早白垩世早期,大致于晚Berriasian至早Valanginian期间。

The understanding of coal bearing strata is not consistent due to the low level of geological work and the paleontological data is lack for Gongpo spring exploration area of Subei County in Gansu Province. To solve the problem of the age of coa-bearing strata and study prospect of looking for coal, pollen samples were collected in selection drilling of exploration area. Through the analysis and comparisons of pollen samples, abundant fossils were obtained, and the combination age is the Early Cretaceous age,roughly in the late Berriasian to early Valanginian period.