摘要
简要论述了西秦岭造山带显生宙以来的构造演化和格局,讨论了西秦岭造山带的性质。西秦岭造山带自800Ma左右以来,经历了超大陆裂解、洋陆演化、碰撞造山、板内伸展和陆内叠覆造山后才形成现今的西秦岭造山带。在不同的构造演化阶段,西秦岭有着完全不同的构造体制和格局。在洋陆演化阶段属板块构造体制,以多陆块洋为特征的洋陆格局;在板内伸展阶段属板内裂谷和裂陷盆地体制,以板内伸展盆地体系为特征的海陆格局;在陆内叠覆造山阶段属陆内盆山体制和陆内盆山格局。西秦岭造山带是一个"碰撞—陆内型"复合造山带。
In this paper tectonic evolution,framework and nature of the West Qinling Orogenic Belt after Phanerozoic Phhave been discussed Since about 800 MaPB,the West Qinling Orogenic Belt underwent breakup of supercontinent,evolution of ocean and continent,collisional orogeny,withinplate stretching and incontinental overprinted orogeny,and presentday West Qinling Orogenic Belt has been eventually completed During diffirent tectonic evolutional stages,the West Qinling Orogenic Belt has various tectonic style and framework In the evolution stage of ocean and continent,its tectonic style belongs to plate tectonics,and it is charecterized by framework of ocean and continent In withinplate stretching stage,its tectonic style belongs to a withinplate rift and faultsubsiding basin,and it is charecterized by a framework of sea and continent In incontinental overpritined orogenic stage,its tectonic style belongs to incontinental basinmauntain style,it is charecterized by an incontinental basinmountain framework Therefore the West Qinling Orogenic Belt is a 'collisionincontinental type'complex orogenic belt
出处
《西北地质》
CAS
CSCD
2003年第1期1-10,共10页
Northwestern Geology
基金
国土资源部"九五"前沿科技项目(项目编号:9501126)研究成果
关键词
西秦岭造山带
显生宙
构造演化
构造格局
造山带性质
the West Qinling Orogenic Belt
since Phanerozoic Ph.
tectonic evolution
tectonic framework
nature of orogenic belt