Abstract
Southern Hunan Province is famous for its intensive rare, radioactive and other metal elements’ mineralizations. There is a relation between the basaltic rocks and mineralizations in space, time and ore-forming elements. The Jurassic-Cretaceous (204–81 Ma) basaltic rocks consists mainly of alkali-basalt and tholeiitic basalt formed in plate environment. Trace elements and Sr, Nd, Pb isotopic compositions show that the regional mantle source was metasomatized shortly before the partial melting. The alkali basalt and tholeiitic basalt might be 3%–5% and 10%–15% of the partial melting of the enriched mantle source respectively. Obviously the enrichment of the regional mantle played an important role in formation of the large and super-large deposits in southern Hunan Province.
Similar content being viewed by others
References
Huang Guoxiang, Geochemical characteristics of the basalts in Xintian-Ningyuan-Daoxian belt,Hunan Geology (in Chinese), 1980, 8(3): 33.
Wang Jingbin, Geochemical feature and structural implication of Huziyan basalt rock mass and its xenolith in Daoxian,Hunan Geology (in Chinese), 1991, 11 (1): 52.
Chen Bihe, Main features of basic-ultrabasic volcanic rocks of Baoan, Ningyuan County,Hunan Geology (in Chinese), 1994, 13(4): 193.
Le Maitre, R. W.,A Classification of Igneous Rocks and Glossary of Ternzs, Oxford: Blackwell, 1989, 193.
Liu Yimao, Wang Changlie. Xu Youzhi et al., Metallization and metallogenetic conditions of Shiehuyuan ultra-large tungsten deposit,Hunan Geology (in Chinese), 1995. 14(4): 211.
Liu Ying, Liu Haichen, Li Xian Hua. Simultaneous and precise determination of 40 elements in rock samples using ICP-MS,Geochemia (in Chinese), 1996, 25(6): 552.
Weaver, B. L., The origin of ocean island basalt end-member compositions: trace element and isotopic constraints,Earth and Planetary Sciences Letters, 1991, 104: 381.
Zhi Xiachen, Feng Jialin. The geochemistry of basalt in Hannuoba, inThe Age and Geochemistry of Cenozoic Volcanic Rock in China (in Chinese), Beijing: Seismic Press, 1992, 114–146.
Zindler, A., Jagontz, E., Mantle cryptology, Geochem.Cosmochem. Acta, 1988, 52: 319.
Wood, D. A., The application of a Th-Hf-Ta diagram to problems of tectonomagmatic classification and to establishing the nature of crustal contamination of basaltic lavas of the British Tertiary volcanic province,Earth and Planetary Science Letters, 1980, 50: 11.
Nakamura, E.. Campbell, I. H., Sun, S., The influence of subduction processes on the geochemistry of Japanese alkaline basalts,Nature. 1985, 316: 55.
Norry, M. J. Fitton, J. G., Compositions differences between oceanic and continental basic lavas and significance, inContinental &salts and Mantle Xenoliths (eds. Hawkesworth. C. J., Norry. M. J.). Nantwich: Shiva Pub., 1983, 5–19.
Leroex, A., Dick, H. J. B., Fisher, R. L., Petrology and geochemistry of MORB from 25’E to 46’E along the Southwest Indian ridge: evidence for contrasting styles of mantle enrichment,J. Petrol., 1989, 30(4): 947.
Breikept, J., Geochemical evolution for magma source heterogeneity and activity of a mantle plume during advanced rifting in the Southern Damara Orogen, Namibia,Lithos., 1989, 23: 115.
Author information
Authors and Affiliations
Additional information
Project supported by the National Climbing Program of China (A30).
Rights and permissions
About this article
Cite this article
Zhao, Z., Bao, Z. & Zhang, B. Geochemistry of the Mesozoic basaltic rocks in southern Hunan Province. Sci. China Ser. D-Earth Sci. 41 (Suppl 1), 102–112 (1998). https://doi.org/10.1007/BF02875640
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02875640