摘要
秦岭─大别造山带的发展演化与全球联合古陆的形成与裂解十分相似。显生宙以来，古中国板块裂解为华北、扬子古板块，秦岭有限洋盆的时期为中晚奥陶世。而聚合拼贴形成的中国板块和中秦岭造山带与联合古陆的形成时期同为石炭、二叠纪。中生代以来新形成的秦岭造山带、华北和扬子地块是与全球联合古陆的解体相同，是裂解的结果。中生代时期秦岭─大别的花岗岩是裂解而不是碰撞俯冲的产物，含柯石英、金刚石的榴辉岩和超基性岩是深部岩片沿造山带走向从深处向表层抽拉－逆冲时带至地表的。
The development and evolution of Qinling-Dabie orogenic belt is quite similar to the formation and splitting of the Pangea since Phanerozoic eon.The China paleo-plates splitted into North China and Yangtze paleo-plates and Qinling limited ocean basin in middleOrdovician Epoch.The North China and Yangtze paleo-plates coalesced to form China plate and middle Qinling orogenic belt in Carboniferous-Permian times. Since the Mosozoic the newly-formed China plate has once more become splitted.The granites in Qinling-Dabie orogenic belt formed since Mesozoic are the result of splitting rather than the sysmbol of plate convergence and collision.The eclogites containing coesite and diamond and the ultrabasic rocks were brought to eatrh's surface by deep sheets moving upward along the strike of the orogenic belt.
出处
《地质力学学报》
CSCD
1995年第3期38-45,共8页
Journal of Geomechanics
基金
地矿部"八五"秦巴重点科技攻关项目
30届国际地质大会项目
国家自然科学基金
关键词
古秦岭
造山带
发展演化
演化阶段
paleo-Qinling orogenic belt
middle-Qiniing orogenic belt
neo-Qinling orogenicbelt
