CAJ | 학술논문

鄂尔多斯盆地西南部宝鸡-环县地区侏罗纪-早白垩世发育一套盆缘沉积,地层之岩石组合、沉积构造、厚度等与相应的层型剖面有较大差别,地层划分对比一直存在分歧.通过系统的地质填图和详细的路线地质调查,结合钻探与地球物理测井成果,依据地层成因及分布特征、相变关系及测井标志,建立了该区侏罗纪-早白垩世地层序列.指出富县组、芬芳河组和宜君组在陕、甘、宁接壤地带均有分布;基于聚煤条件和聚煤期后沉积与构造条件分析,提出彬县-合水区、崇信-环县区的庆阳矿区具有建设大型现代化矿井的地质资源条件,崇信-环县区内永陇矿区煤炭资源开发有较大风险,华亭-彭阳区适合于建设中小型煤矿.
악이다사분지서남부보계-배현지구주라기-조백성세발육일투분연침적,지층지암석조합、침적구조、후도등여상응적층형부면유교대차별,지층화분대비일직존재분기.통과계통적지질전도화상세적로선지질조사,결합찬탐여지구물리측정성과,의거지층성인급분포특정、상변관계급측정표지,건립료해구주라기-조백성세지층서렬.지출부현조、분방하조화의군조재협、감、저접양지대균유분포;기우취매조건화취매기후침적여구조조건분석,제출빈현-합수구、숭신-배현구적경양광구구유건설대형현대화광정적지질자원조건,숭신-배현구내영롱광구매탄자원개발유교대풍험,화정-팽양구괄합우건설중소형매광.
In the Baoji-Huanxian area, southwestern Ordos Basin has developed a set of basin margin deposits with rather large differ-ences to corresponding stratotype section on aspects of strata rock association, sedimentary structure, thickness etc. Divergences in stratigraphic division and correlation are existed all along. Through systematic geological mapping and detailed route geological investi-gation, combined with drilling and geophysical logging results, according to strata genesis and distribution, facies change and well log-ging indications, established Jurassic to early Cretaceous stratigraphic sequence in the area. The paper pointed out that the Fuxian, Fen-fanghe and Yijun formations have distributed in Shaanxi, Gansu and Ningxia bordering area. Based on coal accumulation condition, post coal accumulation age deposits and structural condition analysis, considered that the Binxian-Heshui district and Qingyang min-ing area in the Chongxin-Huanxian district have geological and resource conditions to construct large modern coalmines;the Yonglong mining area in Chongxin-Huanxian district should has greater risk during coal resources exploitation;while the Huating-Pengyang dis-trict is propitious to construct medium to small typed coalmines.