Textures and Structures in the Eastern Hongliuguou-Lapeiquan Tectonic Melange Zone of Northern Altyn Area

The Early Paleozoic Hongliugou- Lapeiquan ophiolite melange zone is an important tectonic boundary in northern Altyn area. It is a key area for studying the subduction boundaries, tectonic evolution and regional framework reconstruction because of complex compositions, rich structures and frequent magmatism. During the 1:50 000 regional geological survey in Annanba of northern Altyn area, the spatial extension, material composition, textures and structures of the Hongliugou- Lapeiquan ophiolite melange zone have been revealed according to tectonic- lithologic mapping. Based on comprehensive study of typical structural profile and deformation events, the tectonic evolution of Altyn area in Early Paleozoic is discussed, which provides a theoretical possibility for establishing a structural model for general melange.