山东国土资源
山東國土資源
산동국토자원
LAND AND RESOURCES IN SHANGDONG PROVINCE
2015年
7期
4-10,18
,共8页
石炭纪%层序地层%含矿性%北祁连阿柔地区
石炭紀%層序地層%含礦性%北祁連阿柔地區
석탄기%층서지층%함광성%북기련아유지구
Sequence stratigraphy%system domain%ore-bearing property%North Qilian mountain
石炭纪地层是该地区分布最广泛的地层之一,因其为一套含煤地层,其沉积特征的研究对煤矿找矿工作非常重要。根据其岩石组合特征划分为2个组即臭牛沟组和羊虎沟组,多受NW—SE向断裂影响,而沿构造方向展布,其顶底一般发育齐全,通过对其层序地层的研究,认为在石炭纪地层发育时期,该区经历了2次较完整的海水入侵及退出的过程,其中的煤矿与第2个海侵体系域发育程度密切相关。
石炭紀地層是該地區分佈最廣汎的地層之一,因其為一套含煤地層,其沉積特徵的研究對煤礦找礦工作非常重要。根據其巖石組閤特徵劃分為2箇組即臭牛溝組和羊虎溝組,多受NW—SE嚮斷裂影響,而沿構造方嚮展佈,其頂底一般髮育齊全,通過對其層序地層的研究,認為在石炭紀地層髮育時期,該區經歷瞭2次較完整的海水入侵及退齣的過程,其中的煤礦與第2箇海侵體繫域髮育程度密切相關。
석탄기지층시해지구분포최엄범적지층지일,인기위일투함매지층,기침적특정적연구대매광조광공작비상중요。근거기암석조합특정화분위2개조즉취우구조화양호구조,다수NW—SE향단렬영향,이연구조방향전포,기정저일반발육제전,통과대기층서지층적연구,인위재석탄기지층발육시기,해구경력료2차교완정적해수입침급퇴출적과정,기중적매광여제2개해침체계역발육정도밀절상관。
Carboniferous strata is one of the most widely distributed strata in this area.It is a set of coal bearing formation,so the study on sedimentary characteristics of coal prospecting work is very important. According to rock association characteristics,the strata in this area can be divided into Chouniugou forma-tion and Yanghugou formation.They are controllded by faults with the trend of NW—SE,and distributed along the direction of the structures.Its top and bottom parts are generally developed completly.Through study on the sequence stratigraphy of Carboniferous strata in this period,it is regarded that this area has experienced two times complete sea water intrusion and exiting periods.Coal deposits have close relation with the degree of the second development of the transgressive system tract.