华北板块与扬子板块的碰撞与地体拼贴效应

EFFECTS OF TERRANE COLLAGE DURING COLLISION OF THE YANG TZE AND NORTH CHINA PLATES

本文按 D.G.Howell 等人关于地体的定义,将华北板块与扬子板块之间划分为三个地体。初步认为,上述二板块的碰接,实质上是先行并贴于该两大陆边缘的诸地体间再拼贴。由此引发的一系列地质效应中,主要的构造效应有:体间滑动、层间滑动、热构造事件以及叠缩作用等。

In the between of the Yangtze and North China plates,three terranes have been distinguished following the definition of terrane given by Howell et al.Preliminary study suggestes that the col lision and connection of the Yangtze and North China plates are, in fact,the re collision and collage of the terranes that were already attached to the margins of these plates,which resulting in a series of geological effects,among them,the major structural ef fects are:1.interterrane slip:2.interlayer slip:3.heating structur- al events and 1.superimposed reduction.