CAJ | 학술논문

层序地层学是分析聚煤规律的一种有效方法.层序地层学应用于含煤地层的分析始于20世纪90年代,Diessel 最先在经典层序地层格架中建立了煤层的聚集模式;之后,Bochacs 和 Stuer通过讨论可容纳空间的变化速率和泥炭聚集速率之间比值的变化,具体分析了不同可容纳空间的煤层厚度、连续性及形态.通过对层序地层中煤层发育和分布的研究,多数煤田地质学家们认为,厚煤层主要发育于低位体系域晚期至海侵体系域早期及海侵体系域晚期至高位体系域早期.由于巨厚煤层往往是许多次级层序及界面的复合体,因此巨厚煤层不能简单地作为成因层序地层的界面,但可以通过煤岩学和地球化学方面的指标对其进行精细划分确定.我国煤田地质学家通过对国内海相煤层的研究,提出了海侵事件聚煤和海相层滞后时段聚煤等观点,从而大大促进了含煤岩系层序地层学的发展.
층서지층학시분석취매규률적일충유효방법.층서지층학응용우함매지층적분석시우20세기90년대,Diessel 최선재경전층서지층격가중건립료매층적취집모식;지후,Bochacs 화 Stuer통과토론가용납공간적변화속솔화니탄취집속솔지간비치적변화,구체분석료불동가용납공간적매층후도、련속성급형태.통과대층서지층중매층발육화분포적연구,다수매전지질학가문인위,후매층주요발육우저위체계역만기지해침체계역조기급해침체계역만기지고위체계역조기.유우거후매층왕왕시허다차급층서급계면적복합체,인차거후매층불능간단지작위성인층서지층적계면,단가이통과매암학화지구화학방면적지표대기진행정세화분학정.아국매전지질학가통과대국내해상매층적연구,제출료해침사건취매화해상층체후시단취매등관점,종이대대촉진료함매암계층서지층학적발전.
It is beneficial for exploitation and exploration of coal resources and resources relating to coal to analyze developing strata and distribution of coal seam in sequence stratigraphy. The time that sequence stratigraphy began to use in coal strata was 90's of last century, Diessel firstly established coal accumulation model in classical se-quence stratigraphy framework, then Bochacs and Stuer discussed the change of ratio of accommodation rate/peat production rate and concretely analyzed thickness, continuity, configuration of coal seam in different accommoda-tion. Based on studied development and distribution of coal seam in sequence stratigraphy, most coal geologists think that thick coal seams were mostly developed during late low stand-early transgression and late transgres-sion-early high stand periods. Extremely thick coal seam is composed of many para-sequence and interface of para-sequence, so we can not easily believe extremely thick coal seam is interface of genetic stratigraphy, but we can use index of coal petrology and geochemistry to finely divide extremely thick coal seam and to confirm inter-face of genetic stratigraphy. In China, coal geologists studied paralic coal seam and raised ideas of coal formation in the transgressive event and coal accumulation during a lag time of marine limestone beds, and that let idea of coal accumulation in sequence stratigraphy to develop.