Eocene sand-conglomerate of inshore submerged fan, turbidite fan and buried hill carbonate rock are the main reservoirs.This place is an important area for oil-gas exploration.

• 古近系近岸水下扇、浊积扇砂砾岩体和下古生界古潜山碳酸岩是油气最主要的储集层，是该带油气勘探的重点。