新疆地质
新疆地質
신강지질
XINJIANG GEOLOGY
2014年
2期
261-265
,共5页
准东煤田%五彩湾%西山窑组%层序地层学%聚煤规律
準東煤田%五綵灣%西山窯組%層序地層學%聚煤規律
준동매전%오채만%서산요조%층서지층학%취매규률
Eastern Junggar coalfield%Wucaiwan prospecting area%Xishanyao formation%Sequence stratigraphy%Coal-accumulating
以钻井岩心描述和勘探成果资料为基础,运用沉积学、煤田地质学和层序地层学相关理论和技术方法,对新疆准东煤田五彩湾矿区西山窑组含煤地层进行层序地层学及聚煤规律研究。将西山窑组划分为2个三级层序,确定层序内部体系域和准层序构成。下部层序为含煤层序,主要可采煤层发育于湖扩体系域和高位体系域,这些煤层合并形成巨厚煤层,最厚达80余米。厚及巨厚煤层的形成与该区西山窑组沉积相对慢的基底沉降速率和少的物源碎屑供给,及可容空间增加速率与泥炭沼泽的增长速率保持长时间的平衡有关。
以鑽井巖心描述和勘探成果資料為基礎,運用沉積學、煤田地質學和層序地層學相關理論和技術方法,對新疆準東煤田五綵灣礦區西山窯組含煤地層進行層序地層學及聚煤規律研究。將西山窯組劃分為2箇三級層序,確定層序內部體繫域和準層序構成。下部層序為含煤層序,主要可採煤層髮育于湖擴體繫域和高位體繫域,這些煤層閤併形成巨厚煤層,最厚達80餘米。厚及巨厚煤層的形成與該區西山窯組沉積相對慢的基底沉降速率和少的物源碎屑供給,及可容空間增加速率與泥炭沼澤的增長速率保持長時間的平衡有關。
이찬정암심묘술화감탐성과자료위기출,운용침적학、매전지질학화층서지층학상관이론화기술방법,대신강준동매전오채만광구서산요조함매지층진행층서지층학급취매규률연구。장서산요조화분위2개삼급층서,학정층서내부체계역화준층서구성。하부층서위함매층서,주요가채매층발육우호확체계역화고위체계역,저사매층합병형성거후매층,최후체80여미。후급거후매층적형성여해구서산요조침적상대만적기저침강속솔화소적물원쇄설공급,급가용공간증가속솔여니탄소택적증장속솔보지장시간적평형유관。
This paper discuss the sequence stratigraphy and coal-accumulating of Xishanyao Formation in Wuchaiwan prospecting area of Eastern Junggar coalfield, based on the discription of cores and the data of prospecting results,apply-ing the theories and the methods of the sequence stratigraphy,sedimentary,coal geology. Xishanyao Formation is dividied two third-grade sequences,and the system tracts and the parasequences were identified The lower sequence is the coal-bearing sequence,in which main workable coal seams were formed in the EST and HST,The formation of thick and huge thick coal seam attributed to the sustained banlance between the growth speed of the admitted space and the peat accumu-lating which produced by relatively slow subsidence of the basin basement and the relatively poor supply of clastic source.