黑龙江省东部白垩纪含煤地层简介  

ON THE CRETACEOUS COAL-BEARING STRATA IN EASTERN HEILONGJIANG

作　　者：朴太元 蔡华伟[2] 姜宝玉[3] 

机构地区：[1]黑龙江省煤田地质局108地质队,黑龙江鸡西158100 [2]中国科学院南京地质古生物研究所,江苏南京210008 [3]南京大学地球科学系,江苏南京210012

出　　处：《地层学杂志》2005年第B11期589-595,共7页Journal of Stratigraphy

基　　金：本研究得到中国科学院知识创新工程方向性项目(KZCX2-SW-129);中国科学院国际合作重点项目(GJHZ0522);国家自然科学基金(No.40372008)的资助。

摘　　要：黑龙江省东部早白垩世含煤地层的分布特点是西部含煤层多、厚度大,向东含煤层数量减少、厚度减薄,大型矿区也主要分布在西部。该区的含煤盆地多为向斜盆地,含煤情况比较好的大型矿井都在向斜的北翼,而向斜南翼基本没有形成较好的煤层。在含煤盆地内,距断陷中心较远且沉降幅度不大的地区通常具有较好的聚煤条件,而在沉降幅度较大、沉积地层较厚的沉降中心地带反而没有形成良好的可采煤层。含煤地层的分布特点反映了本区成煤期构造、古地理和古气候的演化历史。根据生物地层学证据,可将鸡西群和龙爪沟群进行对比,它们的时代无疑应为早白垩世。The Early Cretaceous coal-bearing strata in eastern Heilongjiang are with more coal beds and higher thickness of the coal bed in the western part than in the eastern part. The main diggings also distribute only in the western part of eastern Heilongjiang. The coal-bearing basins of the study area are mostly syncline basins with main coal mine located in the north wing of the syncline, and almost no good coal beds in the south wing. Within the coal-bearing basins, good coal beds usually appear close to the areas that are far from the center of subsidence and with less extent of subsidence. The distribution pattern of coal-bearing strata illustrates the evolution history of the tectonic construction, palaeogeography, and palaeoclimate during the forming of coal beds in the study area. Moreover, the Jixi and Longzhaogou Groups, with the age of the Early Cretaceous undoubtedly, can be correlated based on the present biostratigraphic references.

关 键 词：黑龙江 含煤地层 早白垩世 鸡西群 龙爪沟群 

分 类 号：P534.53[天文地球—古生物学与地层学]