THE BASIC FEATURES OF NEO—TECTONIC MOVEMENT IN XIAMEN ISLAND AND ITS ADJACENT AREA
Liu weikun (Third Institute of Oceanography, National Bureau of Oceanography)
In this paper, the expressions and properties of neo-tectonic movement in Xiamen (Amoy) Island and its adjacent area are macroscopically analysed, their types and fundamental characteristics are summarized, and then three neo-teetonic regions for the studied area are subdivided, e. g. the south region of strong block-differential uplift, the north region of slow intermittent uplift and the Longhai plain region of fault-depressed subsidenee. Since Neogene period, the general tendency of crustal movement in the studied area is uplift. The distribution of ancient coastline evidence and the uplifted height of Futan Formation, as well as the burial depth of alluvium-pluvium in the Longhai plain show that the total amplitude of uplift and subsidence of neo-teetonic movement reaches its maximum of about 300--400 metres and the average uplift rate is about 0.12--0.16mm/yr.