The fault-tectonic belts of Guangzhou-Luofushan are the largest E-W trend fau-lt belts in the central part of Guangzhou area.It has a long developing history

and underwent polyepisode and polystage activites.The repeated tension andcompression(or compressional shear)of nearly N-S direction formed a series oftectonic rocks with different mechanical features and apparent zonation of thetectonic rocks which are superimposed and composed each other.The distributi-on of the Paleozoic strata

the Meosozoic and Cenozoic red beds

as well as theYenshanian igneous rocks and modern morphologic landscape are resulted fromthe repeated faultings which also influenced the subsidence of some portions ofpearl River Delta and the occurrence of earthquake of Guangzhou area.The int-ensity of faulting activity changed from strong to weak since Mesozoic to recenttime

and the intensity progressively decreased.