CAJ | 학술논문

利用煤田钻孔资料，对内蒙古海拉尔盆地下白垩统含煤岩系层序地层格架及聚煤规律进行研究。根据区域不整合面、下切谷砂砾岩体底面、古生物组合突变面及沉积相转换面等层序界面，将海拉尔盆地下白垩统含煤岩系划分为6个三级层序。铜钵庙组是盆地初始断陷阶段的产物；南屯组一段、二段是盆地快速沉降阶段，大磨拐河组一段、二段是盆地稳定拉张阶段，伊敏组是断陷萎缩阶段。盆地早白垩世含煤地层的煤层发育表现为东、北部好，中部次之，西南部差的特点；聚煤作用主要发生在伊敏组及南屯组二段，这2个时期构造沉降表现出间歇性、震荡性及多旋回性，保证了可容空间增加速率与泥炭堆积速率之间的平衡关系，从而形成了区域性的厚煤层。
이용매전찬공자료，대내몽고해랍이분지하백성통함매암계층서지층격가급취매규률진행연구。근거구역불정합면、하절곡사력암체저면、고생물조합돌변면급침적상전환면등층서계면，장해랍이분지하백성통함매암계화분위6개삼급층서。동발묘조시분지초시단함계단적산물；남둔조일단、이단시분지쾌속침강계단，대마괴하조일단、이단시분지은정랍장계단，이민조시단함위축계단。분지조백성세함매지층적매층발육표현위동、북부호，중부차지，서남부차적특점；취매작용주요발생재이민조급남둔조이단，저2개시기구조침강표현출간헐성、진탕성급다선회성，보증료가용공간증가속솔여니탄퇴적속솔지간적평형관계，종이형성료구역성적후매층。
Sequence stratigraphy and coal accumulation pattern of the Early Cretaceous coal measures in Hailar Basin have been studied using outcrop and borehole data in this paper.Based on the regional un-conformity surface,the erosional base of incise valley filled by sandstone and conglomerates,the vertical facies reversal surface and paleontological discontinuous surface,6 third-order sequences were divided in Hailar Basin.Tongbomiao Formation was developed at the initial subsiding stage.Nantun Formation was developed during the rapid subsiding stage.Damoguaihe Formation was formed in the strong extension stage and Yimin Formation was developed during the basin shrinkage stage.The distribution of the Early Creta-ceous coal measures showed best in the eastern and northern,middle part come secondly,and southwest worst.Coal accumulated in the Yimin Formation and the second member of Nantun Formation,where the tectonic subsidence was showing the characters of intermittence,concussion and multi-cyclicity,providing the balance between the increasing rate of accommodation space and the peat accumulating rate favored the accumulation of the regional thick coal seams.