中生代大杨树盆地火山岩特征及岩浆活动规律  

Characteristics of volcanic rock and the law of magma activity of Mesozic Dayangshu Basin

作　　者：佟卉[1] 李桂范[2] 金会苓[3] 田庆丰[4] 

机构地区：[1]大庆石油学院石油工程学院,黑龙江大庆163318 [2]中国地质大学地球科学与资源学院,北京100083 [3]大港油田钻采院,天津大港300280 [4]辽河石油职业技术学院,辽宁盘锦124013

出　　处：《大庆石油学院学报》2008年第3期114-115,141,共2页Journal of Daqing Petroleum Institute

基　　金：国家自然科学基金项目(40272057)

摘　　要：为查明大杨树盆地中生代火山岩特征,采集了48个火山岩样品,进行了全岩化学分析.结果表明,大杨树盆地中生代形成的火山岩类型多样,主要为安山岩、玄武岩、粗面安山岩和英安岩,其次为流纹岩、玄武质粗面安山岩和玄武安山岩,少见粗面岩、粗面玄武岩和碱玄岩.从大兴安岭及周边地区的火山岩发育特征来看,大杨树盆地发育时期,大兴安岭超壳断裂带对大兴安岭及周边地区的岩浆活动具有明显的控制作用.并且岩浆活动,在垂向上,表现为强—弱—强的演化规律,在横向上,大兴安岭断裂带附近岩浆活动强,远离该断裂方向岩浆活动逐渐变弱.There are various type volcanic rock formed in Mesozic Dayangshu Basin, mainly andesite, basalt, trachyandesite, dacite, rhyolite, basaltic trachyandesite, basaltic andesite, little trachyte, trachy basalt and tephrite. The characteristics of volcanic rock and its distribution indicate that the magma activity is obviously controlled by Daxinganling deep faulted zone in Mesozic Dayangshu Basin and its surrounding area, and the orderliness are strong-weak-strong of magma activity in vertically, and magma activity stronger near the Daxinganling deep faulted zone and died down in the direction away from the faulted zone in horizon.

关 键 词：大杨树盆地 中生代 火山岩 岩浆活动 

分 类 号：TE121.3[石油与天然气工程—油气勘探]