【摘要】 以莲花山断裂在广东及相邻海域的延伸为研究对象,在陆域收集ETM+数据对断裂带的地形地貌进行遥感影像解译,在海域使用实测航磁数据推断断裂构造特征,分析了莲花山断裂对珠江口盆地的沉积控制作用。遥感解译结果显示,莲花山断裂带呈NE向束状线性特征,南北两支主干断裂沿西南向入海。断裂带主体为东陡西缓的山脉,两侧为低丘和平原,沿断裂带常发育NE向直线型河,东部山脉多发育深切的"V"型沟谷、直立陡崖或断层三角面;磁场特征显示,北支主断裂延伸至珠江口盆地北侧,南支主断裂穿过珠江口盆地直至海南岛东南侧,沿断裂带岩浆活动明显。莲花山断裂带为不同磁场特征的分区界线,控制了珠江口盆地的基底结构、NEE向断裂和深源岩浆活动,是珠江口盆地一级控盆深断裂。更多还原

【Abstract】 Studies suggest that Lianhuashan fault has extended to marine space.Based on remote sensing image interpretation using terrestrial ETM + data and structural characteristics of aeromagnetic deduced faults in marine space,the authors analyzed sedimentary control of the Lianhuashan fault on the Pearl River Mouth Basin.On the one hand,the result of remote sensing interpretation shows that Lianhuashan fault zone presents a NE-trending fascicular linear feature with two branches extending into the sea in SW direction.The main fault belt is a mountain with low hills and plains on both sides characterized by steepness in the east and gentleness in the west.The authors found that the NE-trending straight line river is developed along the fault zone,and the eastern side of mountains develops deep "V"ravines,vertical cliffs or fault triangles.On the other hand,the magnetic field feature reveals that the branch has extended to the north of Pearl River Mouth Basin and the south branch has passed through Pearl River Mouth Basin to the south of Hainan Island.Magmatic activity is developed obviously along the fault belt.The Lianhuashan fault zone is the dividing line of different magnetic fields,which dominate the NEE-trending basement structure of the Pearl River Mouth Basin with deep source magma activity.It is the first stage deep fault in the Pearl River Mouth Basin.更多还原