【摘要】 在华南丽水一建阳地区作者首次发现蛇绿混杂岩、混杂岩的外来岩块是代表古洋壳碎片的橄榄岩、辉石岩、辉长岩、玄武岩、斜长角闪岩,石榴角闪岩和代表陆壳结晶基底一沉积盖层的斜长片麻岩、花岗岩,石英粉砂岩、灰岩。基质是强烈片理化的深海复理石。混杂岩沿北东向从福建南平一建瓯到浙江龙泉一松阳断续出露。研究发现混杂岩分为陡倾斜的内带和平缓的向北西逆冲的外带,监伴随有强烈的构造变形带、糜棱岩带和碰撞型花岗岩。作者认为这代表二个陆壳地体碰撞的缝合线、碰撞造山运动发生在奥陶纪,并导致二个陆壳地体之间南华海的消亡。更多还原

【Abstract】 A melange complex has been recognized at first time in the Lishui-Jiany- ang of southeast China. Some exotic blocks of melange complex consist of peridotite, pyroxenite, gabbro, basalt, amphibolite and the others are the continent basement and capping rocks, such as plagiogneiss, granite, guartzose-siltstone and marble.The strongly defomed argillite matrix of melange complex consists of pelagic flysch. The melange extends from Nanping-Jianou of Fujian to Longquan-Sunyang of Zhejiang and has been composed of steep dipping inner zone and outer zone thrusting to the northwest, companied with deformed thrust-fold zone, mylonite zone and collision granite zone. Our investigasion shows that the melange zone may represent a fossil collision suture, being a result of the collision of two continent terranes during Ordovician period. The collision orogenic movement led to the closing of Nanhua ocean ocean between two continent terrancs.更多还原