Abstract
SHRIMP zircon U-Pb dating for Chibaisong No.1 gabbro in the Tonghua area, Jilin Province, is discussed in the paper. The cathodoluminescence (CL) images of the zircons indicate that they can be divided into two major types, i.e. euhedral-subhedral one with striped absorption and round one with obvious oscillatory zoning rims. The dating results of the zircons suggest that Chibaisong gabbro in the Tonghua area was formed at 134 ± 7Ma—the Early Cretaceous. The concordia ages of 2497 ± 13Ma, 787 ± 35Ma, 321 ± 10Ma, 217 ± 11Ma of zircons imply that the Tonghua area might geologically be located in the convergent region of the Yangtze Block (YB) and the North China Block (NCB) in the early Mesozoic and the zircons should be caught during magma intrusion. The existence of the Early Cretaceous basic dyke swarm in the Tonghua area shows that an intensive extensional environment occurred in the Early Cretaceous. It is suggested that the magmatism and lithospheric extension in the Tonghua area should be related to the subduction of the Pacific plate.
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References
Bureau of Geology and Mineral Resources of Jilin Province, Geological Memoirs of Jilin Province (in Chinese), Beijing: Geological Publishing House, 1988, 301–385.
Williams I S. U-Th-Pb geochronology by ion microprobe (eds. McKibben, M. A., Shanks, W. C., Ridley, W. I.), Applications of Microanalytical Techniques to Understanding Mineralizing Processes. Review of Economic Geology, 1998, 7: 1–35
Song, B., Zhang, Y. H., Wan, Y. S. et al., Mount making and procedure of the SHRIMP dating, Geological Reviews (in Chinese), 2002, 48(supp.): 26–60.
Koschek, G., Origin and significance of the SEM cathodoluminescence from zircon, Journal of Microscopy, 1993, 171: 223–232.
Keay, S., Steele, D., Compston, W., Identifying granite sources by SHRIMP U-Pb zircon geochronology: an application to the Lachlan foldbelt, Contrib. Miner. Petrol., 1999, 137: 323–341.
Ma, X., Bai, J., Precambrian crustal evolution of China, Springer, Berlin, Geological Publication House, 1998, 1–331.
Zhao, G. C., Palaeoproterozoic assembly of the North China Craton, Geological Magazine, 2001, 138: 87–91.
Lu, X. P., Wu, F. Y., Zhao, C. B. et al., Triassic U-Pb age for zircon from granites in the Tonghua area and its response to the Dabie-Sulu ultrahigh-pressure collisional orogenesis, Chinese Science Bulletin, 2003, 48(15): 1616–1623.
Zhou, J., B., Zheng, Y. F., Wu, Y. B., Zircon U-Pb ages and its geological significance in Wulian granite from north western edge of Sulu orogenic belt, Chinese Science Bulletin, 2003, 48(4): 379–384.
Zheng, Y. F., Fu, B., Gong, B. et al., Stable isotope geochemistry of ultrahigh pressure metamorphic rocks from the Dabie-Sulu orogen in China: Implications for geodynamics and fluid regime, Earth Sci. Rev., 2003, 62: 1–57.
Xu, W. L., Wang, Q. H., Liu, X. C. et al., SHRIMP zircon U-Pb dating in Jingshan “migmatitic granite”, Bengbu and its geological significance, Science in China, Ser. D, 2005, 48(2): 185–191.
Wang, D. Z., Zhou, X. M. et al. The petrogenesis of the Late Mesozoic Granitic Volcanic-intrusive Complexes and Its Crustal Evolution (in Chinese), Beijing: Science Press, 2002, 1–295.
Jin, K., Xu, W. L., Wang, Q. H. et al., Formation time and sources of the Huaiguang “migmatitic granodiorite” in Bengbu, central China: evidence from SHRIMP zircon U-Pb geochronology, Acta Geoscientia Sinica (in Chinese), 2003, 24(4): 331–335.
Xu, W. L., Wang, D. Y., Wang, Q. H. et al., 40Ar/39Ar dating of hornblende and biotite in Mesozoic intrusive complex from the North China Block: Constraints on the time of lithospheric thinning, Geochemica (in Chinese), 2004, 33(3): 221–231.
Xu, Y. G., Huang, X. L., Ma, J. L. et al., Crust-mantle interaction during the tectono-thermal reactiovation of the North China Craton: constraints from SHRIMP zircon U-Pb chronology and geochemistry of Mesozoic plutons from western Shandong, Contrib. Miner. Petrol., 2004, 147: 750–767.
Wu, F. Y., Lin, J. Q., Wilde, S. L. et al., Nature and significance of the Early Cretaceous giant igneous event in eastern China, Earth Planet. Sci. Lett., 2005, 233(1–2): 103–119.
Li, S. Z., Liu, J. Z., Zhao, G. C. et al., Key geochronology of Mesozoic deformation in the eastern block of the North China Craton and its constraints on regional tectonics: a case of Jiaodong and Liaodong Peninsul, Acta Petrologica Sinica (in Chinese), 2004, 20(3): 633–646.
Shao, J. A., Li, X. H., Zhang, L. Q. et al., Geochemical condition for genetic mechanism of the Mesozoic bimodal dike swarms in Nankou-Guyaju, Geochemica (in Chinese), 2001, 30(6): 517–524.
Lin, Q., Ge, W. C., Cao, L. et al., Geochemistry of Mesozoic volcanic rocks in Da Hinggan Ling: The bimodal volcanic rocks, Geochemica (in Chinese), 2003, 32(3): 208–222.
Dai, S. Q., Deng, J. F., Wu, Z. X. et al., Evidence of magmatic petrology for the Yanshanian orogeny in the Dabie orogen, Geology in China (in Chinese), 2003, 30(2): 159–165.
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Pei, F., Xu, W., Yang, D. et al. SHRIMP zircon U-Pb dating and its geological significance of Chibaisong gabbro in Tonghua area, Jilin Province, China. SCI CHINA SER D 49, 368–374 (2006). https://doi.org/10.1007/s11430-006-0368-7
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DOI: https://doi.org/10.1007/s11430-006-0368-7