多伦地区晚侏罗世火山活动节律研究  

A Study on the Rhythm of the Late Jurassic Volcanic Activities in Duolun Region

作　　者：赵国春[1] 邓晋福[1] 白志达[1] 顾德林[1] 徐德斌[1] 孙恺荪[1] 田明中[1] 赵海玲[1] 罗照华[1] 李永华[1] 

机构地区：[1]中国地质大学,北京100083

出　　处：《地质论评》1999年第S1期508-516,共9页Geological Review

基　　金：国家攀登专项(编号SSER-Ⅲ-2);国家自然科学基金项目(编号49772155);国土资源部"九五""多伦地区5 幅1:50000区域地质调查及填图"项目的成果之一

摘　　要：多伦地区的晚侏罗世火山岩地层,可划分为满克头鄂博、玛尼吐、白音高老三个火山活动小旋回,通过对其岩石组成、岩相、结构构造及其变化的研究,从地球历史演化的阶段性、周期性和不可逆性的角度,探讨了该区晚侏罗世火山活动节律特征,进而从时空尺度对火山活动节律的级别和特征进行了划分和厘定,并探讨了不同级别节律的成因。The Late Jurassic volcanic stratigraphy in Duolun area are divided into volcanic activities micro -cycles of Manketou Obo , Manit and Bayangol. This paper deals with characteristics of the volcanic activities rhythm in the region from the stages, periods and irreversible of the evolve of the earth's history, which is based on the study of the rock association, lithofacies, tectonic and structure and their changes. Furthermore, the hierarchy and characteristics of the volcanic activities rhythm are classified from the space-time. The formation of different hierarchy is discussed.

关 键 词：火山活动节律 旋回 岩相 

分 类 号：P317[天文地球—固体地球物理学]