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1 State Key Laboratory of Ore Deposit Research, Department of Earth Sciences, Nanjing University, Nanjing, People's Republic of China;
wucz{at}nju.edu.cn
2 State Key Laboratory of Ore Deposit Research, Department of Earth Sciences, Nanjing University, Nanjing, People's Republic of China;
lxgu{at}nju.edu.cn
3 Department of Earth Sciences, Nanjing University, Nanjing, People's Republic of China;
njuzzz{at}sohu.com
4 Exploration and Development Research Institute (E&D institute), Liaohe Oilfield Branch Company, PetroChina, Liaoning Panjin, People's Republic of China;
lh_rzw{at}sina.com
5 Exploration and Development Research Institute (E&D institute), Liaohe Oilfield Branch Company, PetroChina, Liaoning Panjin, People's Republic of China;
chenzhy24{at}sina.com
6 Department of Earth Sciences, Nanjing University, Nanjing, People's Republic of China;
li_tai_ran{at}hotmail.com
Changzhi Wu received his B.Sc. degree from Jilin University in 1998 and then worked as an exploration geologist for 1 year in the Geological Company of Minxi in Fujian Province, China. He obtained his Ph.D. from Nanjing University in 2004 and is currently a lecturer in the Department of Earth Sciences, Nanjing University. His principal research interests are the geochemistry of magmatic rocks and the formation mechanism of oil and gas reservoirs associated with magmatic rocks.Lianxing Gu received his B.Sc. degree from Peking University in 1967 and then worked as an exploration geologist until 1978 in the Geological Company No. 814. He obtained his M.Sc. degree and his Ph.D. from Nanjing University in 1982 and 1985, respectively, and is currently a professor in the Department of Earth Sciences, Nanjing University. His principal research interests are massive sulfide ores, mineral deposits related to granites and volcanic rocks, and the formation mechanism of oil and gas reservoirs in volcanic rocks.
Zunzhong Zhang received his B.Sc. degree from the Wuhan Institute of Chemical Technology in 1991 and is currently a Ph.D. student at Nanjing University. His current research deals with petrogenesis of granite in eastern Tianshan of Xingjian Province, China.
Zuowei Ren received his B.Sc. degree in geophysics in 1988 from Qingdao Ocean University. He then worked as a geologist with the E&D Institute of the Liaohe Oilfield Branch Company, PetroChina. He is now a Ph.D. student in the Department of Earth Sciences, Nanjing University, and his current research deals with the formation mechanism of oil and gas reservoirs in volcanic rocks.
Zhengyan Chen received his B.Sc. degree from Tongji University in 1988. He then worked as a geologist with the E&D Institute of the Liaohe Oilfield Branch Company, PetroChina.
Weiqiang Li received his B.Sc. degree from Nanjing University in 2004 and is currently a postgraduate student at Nanjing University. His interest is geochemistry of both solid earth and the interface between lithosphere and biosphere, and his current research deals with the supergene alteration of several pyritic copper mines in southern China.
Numerous petroleum-producing Mesozoic–Cenozoic basins are present in the coastal areas of eastern China. Voluminous volcanic and subvolcanic intrusive rocks, dominantly basaltic and, to a lesser degree, trachytic in composition, are intercalated or intruded in the sedimentary sequences. These magmatic rocks can serve as cap rocks as well as reservoir beds for hydrocarbons. Hydrocarbon reservoirs related to volcanic rocks can be classified into the volcanic-trapped type, the volcanic-sealed type, and the weathering crust type, and those related to subvolcanic intrusions include the doming-derived fracture type, the cryptoexplosive breccia type, the primary fracture type, the alteration zone type, the contact zone type, and the laterally sealed type. A generalized model for the formation of hydrocarbon reservoirs related to volcanic and subvolcanic rocks is proposed. We call for more attention to volcanic- and subvolcanic-related reservoirs during the exploration for hydrocarbons.
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