CAJ | 학술논문

大城勘查区揭露岩浆岩的钻孔共计11个，查明岩浆岩的发育特点可以为煤炭储量的计算、煤类划分及矿井水防治提供依据，还对开采工作面的合理布置具有重要的指导意义，同时为大城勘查区附近其它区域的矿产勘查工作提供参考。岩浆岩出露层位位于12煤至基岩之间，且以10煤层位最多，通过化验鉴定岩浆岩类型为基性煌斑岩。从分布范围来看，岩浆岩呈北北东带状分布；从揭露厚度方面看，5号、6号钻孔中最为发育，根据岩浆岩发育特点推断其产状以岩墙、岩脉及岩床的形式存在；通过分析对比河北区域各个时期的岩浆岩发育特点，最终判定其为古近纪时期的岩浆岩。
대성감사구게로암장암적찬공공계11개，사명암장암적발육특점가이위매탄저량적계산、매류화분급광정수방치제공의거，환대개채공작면적합리포치구유중요적지도의의，동시위대성감사구부근기타구역적광산감사공작제공삼고。암장암출로층위위우12매지기암지간，차이10매층위최다，통과화험감정암장암류형위기성황반암。종분포범위래간，암장암정북북동대상분포；종게로후도방면간，5호、6호찬공중최위발육，근거암장암발육특점추단기산상이암장、암맥급암상적형식존재；통과분석대비하북구역각개시기적암장암발육특점，최종판정기위고근기시기적암장암。
There are 11 boreholes exposed magmatite in Dacheng exploration area,making the characteristic of magmatite clear con-tribute to counting the reserve of coal,coal classification and water con-trolling ,it is also important to make arrangements for coal mining, meanwhile it could provide references for the mineral exploration work in other areas.The magmatite exist between NO.12 mine and the bedrock, and the NO.10 coal seam holds the most.The type of mag-matite belongs to basic lamprophyre by the identification of the test . From the point of revealing and distribution range, magmatite is widespread in NO.5 and NO.6 borehole, which exists in the form of dykes ,dikes and sills, showing in NNE zonal distribution on the whole. Based on the comparison of magmatic development in Hebei each peri-od, the magmatite in Dacheng area are finnally decided to Paleogene period of magmatite .