CAJ | 학술논문

准噶尔盆地东部地区基底主要是中石炭统的安山岩和玄武岩,近年来在该区发现了多个火山岩油气藏,该区现已成为重要的油气产区.2008年在准噶尔盆地东部地区进行了野外地质踏勘,共实测地质剖面4条,分别为白碱沟、双井子、金山沟、沙尔布拉克,并确定了火山口的准确位置,文章论述了这些火山口的类型及地表特征.该区火山口划分为放射状火山口、环状火山口和半环状火山口3种类型.对不同类型的火山口分析后,归纳出5种火山口的识别标志:①侵出相珍珠岩;②火山岩岩性、岩相的环带状分布;③硫磺矿沉积;④大面积热液侵染;⑤大规模隐爆角砾岩和堆砌结构.最后讨论了火山口存在的重要意义.
준갈이분지동부지구기저주요시중석탄통적안산암화현무암,근년래재해구발현료다개화산암유기장,해구현이성위중요적유기산구.2008년재준갈이분지동부지구진행료야외지질답감,공실측지질부면4조,분별위백감구、쌍정자、금산구、사이포랍극,병학정료화산구적준학위치,문장논술료저사화산구적류형급지표특정.해구화산구화분위방사상화산구、배상화산구화반배상화산구3충류형.대불동류형적화산구분석후,귀납출5충화산구적식별표지:①침출상진주암;②화산암암성、암상적배대상분포;③류광광침적;④대면적열액침염;⑤대규모은폭각력암화퇴체결구.최후토론료화산구존재적중요의의.
Eastern basements of Junggar Basin mainly are andesite and the basalt of the Middle Carboniferous. In recent years, many volcanic rock oil and gas fields have been discovered in this area which become the important oil-producing area. The craters' accurate positions were determined in preliminary survey of field geology in Eastem Junggar Basin in 2008, authors elaborated these craters' types and the surface characteristics. Four actual geologic cross-sections were surveyed which are Bai Jiangou, Shuangjingzi, Jinshangou and Shaerbulake. Authors divided these craters into three different types-radiated craters, the ring-like crater and half ring-like crater, and summarized five kind of crater identification sign according to these three different type's craters: ①the pearlite of intrusive facies; ②the ring-like belt-shaped distribution of volcanic rock lithologic character and facies; ③the deposition of sulfur ore; ④the big area of hydrothemaal dissemination; ⑤large-scale cryptoexplosion breccias and packing structure. Finally the importance of crater discovery is discussed.