Abstract
Seven LA-ICP-MS zircon U-Pb datings from granitoids in the southern basement of the Songliao basin were done in order to constrain the ages of the basin basement. The cathodoluminescence (CL) images of the zircons from seven granitoids indicate that they are euhedral-subhedral ones with striped absorption and obvious oscillatory zoning rims. The dating results show that a weighted mean 206Pb/238U age is 236±3 Ma for quartz diorite (sample No.T6-1) located in the western slope of the basin, that weighted mean 206Pb/238U ages are 319±1 Ma (2126 m) and 361±2 Ma (1994 m) for diorite (sample No.YC1-1) and granite (sample No.YC1-2) located in northern part of southeastern uplift of the basin, respectively, and that weighted mean 206Pb/238U ages are 161±5 Ma, 165±2 Ma, 165±1 Ma and 161±4 Ma for samples Q2-1, SN121, SN122, and SN72 granitoids located in southern part of southeastern uplift of the basin, respectively. The statistical results of ages suggest that the middle Jurassic granitoids constitute the main part of basement granitoids, and that the Hercynian and Indo-Sino magmatisms also occur in the basin basement. It is implied that the Songliao basin should be a rift one formed in the intracontinent or active continental margin settings in the late Mesozoic after the Middle Jurassic orogeny took place.
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References
Wang T. Oil and Gas Geology of Rifting Basins in Eastern China (in Chinese). Beijing: Petroleum Industry Press, 1997. 41–47
Wu F Y, Sun D Y, Li H M, et al. Zircon U-Pb ages of the basement rocks beneath the Songliao Basin, NE China. Chin Sci Bull, 2000, 45(16): 1514–1518
Wang P J, Ren Y G, Shan X L, et al. The Cretaceous volcanic succession around the Songliao basin, NE China: Relationship between volcanism and sedimentation. Geol J, 2002, 37(2): 1–19
Chi Y L, Yun J B, Meng Q A, et al. Deep Structure and Dynamics of Songliao Basin and Hydrocarbon Accumulation (in Chinese). Beijing: Petroleum Industry Press, 2002. 1–274
Guo C K, Liu J. Basement and cover features of the Songliao basin. In: Editiorial Board of Contributions to Structural Geology, ed. Contributions to Structural Geology (4) (in Chinese). Beijing: Geological Publishing House, 1985. 133–139
Wang X L, Liu L, Liu Z J. Basement structure and tectonic evolution of the Mesozoic-Cenozoic basins along the Manzhouli-Suifenhe Geotransect. In: China M-SGT Geological Group, ed. Geological Studies on Lithospheric Structure and Evolution of the Manzhouli-Suifenhe Geotransect (in Chinese with English abstract). Beijing: Seismological Press, 1994. 26–37
Wu F Y, Sun D Y, Li H M, et al. The nature of basement beneath the Songliao basin in NE China: Geochemical and isotopic constraints. Phys Chem Earth, 2001, 26: 793–803
Yang J L, Shi R H, Wang D L. Structural features of the Songliao basin and the relationships to oil and gas. In: Editional Board for Structural Features of Oil-and Gas-Bearing Areas in China, ed. Structural Features of Oil-and Gas-bearing Areas in China (in Chinese). Beijing: Petroleum Industry Press, 1989. 47–63
Yuan H L, Gao S, Liu X M, et al. Accurate U-Pb age and trace element determinations of zircon by laser ablation-Inductively coupled plasma mass spectrometry. Geosand Newsl, 2004, 28: 353–370
Black L P, Kamo S L, Allen C M, et al. TEMORA 1: A new zircon standard for Phanerozoic U-Pb geochronology. Chem Geol, 2003, 200: 155–170
Anderson T. Correction of common lead in U-Pb analyses that do not report 204Pb. Chem Geol, 2002, 192: 59–79
Koschek G. Origin and significance of the SEM cathodoluminescence from zircon. J Microscopy, 1993, 171: 223–232
Yang C H, Xu W L, Yang D B, et al. Petrogenesis of Mesozoic high-Mg diorites in western Shandong: Evidence from chronology and petro-geochemistry. J Chin Univ Geosci, 2005, 16(4): 297–308
Zhou C Y, Wu F Y, Ge W C, et al. Age, geochemistry and petrogenesis of the cumulate gabbro in Tahe, northern Da Hinggan Mountains. Acta Petrol Sinica (in Chinese with English abstract), 2005, 21(3): 763–775
Bureau of geology and mineral resouces of Heilongjiang Province. Regional Geology of Heilongjiang Province (in Chinese). Beijing: Geological Publishing House, 1993. 1–734
Ge W C, Wu F Y, Zhou C Y, et al. Zircon U-Pb ages and its significance of the Mesozoic granites in the Ulan Hot region, central Da Hinggan Mountains. Acta Petrol Sinica (in Chinese with English abstract), 2005, 21(3): 749–762
Sun D Y. The origin and dynamic mechanism of Mesozoic granitoids in Zhangguangcailing. Dissertation for the Doctoral Degree. Changchun: Jilin University, 2001. 1–96.
Wu F Y, Wilde S A, Sun D Y, et al. Geochronology and petrogenesis of post-orogenic Cu, Ni-bearing mafic-ultramafic intrusions in Jilin, NE China. J Asian Earth Sci, 2004, 23: 787–797
Zhang Y B, Wu F Y, Wilde S A, et al. Zircon U-Pb ages and tectonic implications of ‘Early Paleozoic’ granitoids at Yanbian, Jilin Province, northeast China. The Island Arc, 2004, 13: 484–505
Wu F Y, Yang J H, Wilde S A, et al. Ceochronology, petrogenesis and tectonic implications of Jurassic granites in the Liaodong Peninsula, NE China. Chem Geol, 2005, 221: 127–156
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Supported by the National Oil-Gas Special Project (Grant No. XQ-2004-07), the China Petrolleum Chemical Corporation (Grant No. P04031), and the Key Laboratory of Continental Dynamics, Northwest University
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Gao, F., Xu, W., Yang, D. et al. LA-ICP-MS zircon U-Pb dating from granitoids in southern basement of Songliao basin: Constraints on ages of the basin basement. SCI CHINA SER D 50, 995–1004 (2007). https://doi.org/10.1007/s11430-007-0019-7
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DOI: https://doi.org/10.1007/s11430-007-0019-7