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一、前言 自盆地西北缘乌尔禾风成城地区的“石炭系” 中钻探出具有工业性的油流后,引起了广大石油地质工作者对盆地石炭系,特别是西北缘地区石炭系研究的极大注目和兴趣,并已列入到我局目前重点勘探目的层之一。由于以往对盆地石炭系的研究较少,特别是生物地层的研究工作开展得就更少,可以说几乎是个空白。故哈拉阿拉特山地区的地层
I. INTRODUCTION After the industrial oil flow was drilled from the “Carboniferous” area of Urhohechengcheng area in the northwestern margin of the basin, the majority of petroleum geologists have caused the petroleum geologists to study the Carboniferous in the basin, especially the Carboniferous in the northwestern margin Great attention and interest, and has been included in the Board of the current focus of exploration one of the layers. Since there have been few researches on Carboniferous in the basin in the past, especially in the study of biostratigraphy, the research work is even less and can be said to be almost blank. Therefore, Halaalatate strata