When the vitrinite reflectance of source rock in the Futan Group is 0.3%(R

o

)

the resinite and alginite contained in the source rocks may form light crude oil and natural gas.This part of resource extent must be considered in oil and gas exploration.Futan area is located in the west margin of Cenozoic Xiamen-Penghu fault depression

and the major sag in the depression contains nearly 5000m thick Tertiary deposits of terrestrial-neritic factes.Thus Futan area possess good potential of immature-high mature oil and gas.