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Abstract There are abundant hydrocarbon resources in the Zhujiang River mouth basin, whose hydrocarbon
exploration potential has attracted more and more interest among scientists. Local magnetic anomaly is always
bound up with local structural trap of hydrocarbon resources. Based on processing and analysis of largescale
and highresolution aeromagnetic data, the authors distinguished five kinds of local aeromagnetic anomalies
related to structural trap. They have to do with basement rocks, basic intrusive rocks, intermediateacid
intrusive rocks, volcanic rocks or sedimentary rocks. The characteristics of each kind of local aeromagnetic
anomalies related to structural trap are described in detail in this paper. Combined with seismic, gravity and
drilling data, the authors have made geological interpretation of some typical anomalies，thus providing the
basis for oil and gas exploration.
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