Geochronology from Middle Triassic to Middle Jurassic Detrital Zircons in Jiyuan Basin and Its Implications for the Qinling Orogen
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摘要: 豫西济源盆地位于秦岭造山带北部, 是三叠纪-侏罗纪秦岭造山带的同造山盆地.对济源盆地中三叠世-中侏罗世6个组的碎屑锆石样品进行了LA-ICP-MS的U-Pb年龄分析.结果表明, 碎屑锆石年龄主要分布于以下区间: 2.9~1.7 Ga、1.6~1.0 Ga、1.0~0.8 Ga、800~650 Ma、520~380 Ma、350~245 Ma和~220 Ma, 其中除了2.9~1.7 Ga的碎屑锆石主要来自于华北克拉通基底外, 其他几个年龄段的锆石则主要来自于秦岭造山带, 并且显示出随着地层年龄的逐渐变新, 碎屑锆石年龄有逐渐变老的趋势.在中三叠世-晚三叠世早期样品中, 主要年龄是350~245 Ma, 在晚三叠世晚期-中侏罗世早期样品中, 1.6~1.0 Ga、1.0~0.8 Ga、800~650 Ma和520~380 Ma则逐渐增多, 到了中侏罗世晚期, 1.6~1.0 Ga和520~380 Ma依然存在于样品中, 并且还发现了~220 Ma年龄.碎屑锆石年龄结构指示了秦岭造山带印支期经历了由年轻的盖层到较老的基底的去顶过程.并与合肥、黄石盆地的碎屑锆石数据对比发现, 早侏罗世时, 去顶强度东强西弱; 东部高压-超高压变质岩或晚三叠世岩体可能暴露于早侏罗世, 而西部则到了中侏罗世.Abstract: Jiyuan basin is located in the north of Qinling orogen and regarded as a Triassic-Jurassic synorogenic basin. This paper presents a great number of detrital zircon U-Pb ages for synorogenic sediments in age ranging from the Middle Triassic to Middle Jurassic in the Jiyuan basin. The results show seven major age groups at 2.9-1.7 Ga, 1.6-1.0 Ga, 1.0-0.8 Ga, 800-650 Ma, 520-380 Ma, 350-245 Ma and ~220 Ma. It is obvious that age group of 2.9-1.7 Ga is directly derived from the Precambrian basement of North China Craton whereas other groups are typical characteristics of the Qinling orogenic belt. An important observation is that the Qinling-sourced detrital zircons become older from the Middle Triassic to the Early Jurassic sedimentary sequences, which is characterized by the main age clusters at 350-245 Ma occurring in the T2-T31 strata while age groups at 1.6-1.0 Ga, 1.0-0.8 Ga, 800-650 Ma and 520-380 Ma increase successively in the T32-J21 samples. In addition, little grains of age groups at 1.6-1.0 Ga, 520-380 Ma and ~220 Ma are presented in the J22 sample. The above-mentioned findings indicate that unroofing pattern of Qinling orogenic belt developed by the denudation of sendiments from young covers to old basements in order, then to the Carnian plutons. Integrated with the data reported from Hefei and Huangshi basins, it is well established that the intensity of unroofing increased from the west to the east in the Early Jurassic, and the denudation timing of the ultra high pressure (UHP)-high pressure (HP) rocks or Carnian plutons changed successively from the Early Jurassic in the east to the Middle Jurassic in the west.
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Key words:
- Jiyuan basin /
- Qinling orogenic belt /
- detrital zircon /
- provenance /
- unroofing pattern /
- geochronology /
- sedimentology
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图 1 研究区构造背景简图
F1.宝鸡-义马-周口断裂；F2.栾川断裂；SF1.商丹缝合带；SF2.勉略缝合带
Fig. 1. Schematic tectonic map of the study area
图 2 研究区地质图及地层柱状图
Fig. 2. Simplified geological map and sedimentological profile of the study area
图 5 秦岭造山带、华北克拉通基底及济源盆地碎屑锆石U-Pb年龄分布直方图
华北数据来源：Darby and Gehrels, 2006；Kröner et al., 2006；Wan et al., 2006a, 2006b；Xia et al., 2006a, 2006b；Lu et al., 2008；Yin et al., 2009；Li et al., 2010；Zhao et al., 2008.秦岭数据来源：Ratschbacher et al., 2003; 杨经绥等，2003；王涛等，2005；Chen et al., 2006a, 陈强等，2006b；凌文黎等，2007；刘军锋等, 2007, 2009；闫全人等, 2007, 2008；闫臻等，2009；Jiang et al., 2010；Qin et al., 2010
Fig. 5. Relative probability density diagram of ages for the Qinling orogen, North China craton and analyzed samples
图 6 济源盆地晚三叠世物源示意
F2.栾川断裂；SF1.商丹缝合带；SF2.勉略缝合带
Fig. 6. Provinance of the Late Triassic detrital sediments in the Jiyuan basin
图 7 样品中代表秦岭造山带年轻的盖层与较老的基底年龄碎屑锆石颗粒个数
Fig. 7. Grain number of detrital-zircon from covers and old basements of Qinling orogen
图 8 秦岭造山带中三叠世-中侏罗世去顶模式
Fig. 8. Schematic unroofing process of the Qinling orogen during the middle Triassic to middle Jurassic
图 9 济源盆地、合肥盆地、黄石盆地侏罗纪碎屑锆石年龄对比(合肥盆地数据来源：Li et al., 2005；黄石盆地数据来源：Yang et al., 2010)
Fig. 9. Comparison of detrital zircon ages from the Jiyuan basin in the Jurassic with counterparts from the Hefei and Huangshi basins
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[1] Bruguier, O., Lancelot, J.R., Malavieille, J., 1997. U-Pb dating on single detrital zircon grains from the Triassic Songpan-Ganze flych (Central China): provenance and tectonic correlations. Earth and Planetary Science Letters, 152: 217-231. doi: 10.1016/S0012-821X(97)00138-6 [2] Buatois, L.A., Mangano, M.G., Wu, X.T., et al., 1996. Trace fossils from Jurassic lacustrine turbidites of the anyao formation (Central China) and their environmental and evolutionary significance. Ichnos, 4(4): 287-303. doi: 10.1080/10420949609380137 [3] Chen, Z.H., Lu, S.N., Li, H.K., et al., 2006a. Constraining the role of the Qinling orogen in the assembly and break-up of Rodinia: tectonic implications for Neoproterozoic granite occurrences. Journal of Asian Earth Sciences, 28: 99-115. doi: 10.1016/j.jseaes.2005.03.011 [4] Chen, Q., Chen, N.S., Wang, Q.Y., et al., 2006b. Electron microprobe chemical ages of monazite from Qinling group in the Qinling orogen: evidence for Late Pan-African metamorphism? Chinese Science Bulletin, 51(21): 2645-2650. doi: 10.1007/s11434-006-2152-7 [5] Corfu, F., Hanchar, J.M., Hoskin, P.W.O., et al., 2003. Altas of zircon textures. Rev. Mineral. Geochem. , 53(1): 469-500. doi: 10.2113/0530469 [6] Darby, B.J., Gehrels, G., 2006. Detrital zircon reference for the North China block. Journal of Asian Earth Sciences, 26: 637-648. doi: 10.1016/j.jseaes.2004.12.005 [7] Enkelmann, E., Weislogel, A., Ratschbacher, L., et al., 2007. How was the Triassic Songpan-Ganzi basin filled? A provenance study. Tectonics, 26. doi: 10.1029/2006TC002078 [8] Feng, Z.J., Zhou, Q., Wang, J., et al., 1997. The changes of Mesocenozoic paleogeographic environments in the southwest of Henan. Henan Geology, 15(4): 270-277 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-HNDD704.003.htm [9] Jiang, Y.H., Jin, G.D., Liao, S.Y., et al., 2010. Geochemical and Sr-Nd-Hf isotopic constraints on the origin of Late Triassic granitoids from the Qinling orogen, central China: implications for a continental arc to continent-continent collision. Lithos, 117: 183-197. doi: 10.1016/j.lithos.2010.02.014 [10] Kröner, A., Wilde, S.A., Zhao, G.C., et al., 2006. Zircon geochronology and metamorphic evolution of mafic dykes in the Hengshan complex of northern China: evidence for Late Palaeoproterozoic extension and subsequent high-pressure metamorphism in the North China craton. Precambrian Research, 146: 45-67. doi: 10.1016/j.precamres.2006.01.008 [11] Li, R.W., Wan, Y.S., Cheng, Z.Y., et al., 2005. Provenance of Jurassic sediments in the Hefei basin, East-Central China and the contribution of high-pressure and ultrahigh-pressure metamorphic rocks from the Dabie Shan. Earth and Planetary Science Letters, 231: 279-294. doi: 10.1016/j.epsl.2004.12.021 [12] Li, T.S., Zhai, M.G., Peng, P., et al., 2010. Ca. 2.5 billion year old coeval ultramafic-mafic and syenitic dykes in eastern Hebei: implications for cratonization of the North China craton. Precambrian Research, 180: 143-155. doi: 10.1016/j.precamres.2010.04.001 [13] Ling, W.L., Duan, R.C., Liu, X.M., et al., 2010. U-Pb dating of detrital zircons from the Wudangshan Group in the South Qinling and its geological significance. Chinese Sci. Bull. , 55(22): 2440-2448. doi: 10.1007/s11434-010-0095-5 [14] Ling, W.L., Ren, B.F., Duan, R.C., et al., 2008. Timing of the Wudangshan, Yaolinghe volcanic sequences and mafic sills in South Qinling: U-Pb zircon geochronology and tectonic implication. Chinese Sci. Bull. , 53(14): 2192-2199. doi: 10.1007/s11434-008-0269-6 [15] Liu, J.F., Sun, Y., Sun, W.D., 2009. LA-ICP-MS zircon dating from the Lajimiao mafic complex in the Qinling orogen belt. Acta Petrologica Sinica, 25(2): 320-330 (in Chinese with English abstract). http://www.researchgate.net/publication/236348057_LA-ICP-MS_zircon_dating_from_the_Lajimiao_mafic_complex_in_the_Qinling_orogenic_belt [16] Liu, J.F., Sun, Y., Zhang, H., 2007. Zircon age of Luohansi group in the northern Qinling and their geological significance. Journal of Northwest University (Natural Science Edition), 37(6): 907-911 (in Chinese with English abstract). http://www.researchgate.net/publication/284482042_Zircon_age_of_Luohansi_Group_in_the_northern_Qinling_and_their_geological_significance [17] Liu, S.F., Zhang, G.W., 2008. Evolution and geodynamics of basin/mountain systems in East Qinling-Dabieshan and its adjacent regions, China. Geological Bulletin of China, 27(12): 1943-1960 (in Chinese with English abstract). [18] Liu, S.F., Zhang, G.W., Ritts, B.D., et al., 2010. Tracing exhumation of the Dabie Shan ultrahigh-pressure metamorphic complex using the sedimentary record in the Hefei basin, China. Geological Society of America Bulletin, 122(1/2): 198-218. doi: 10.1130/B26524.1 [19] Liu, Y.S., Hu, Z.C., Gao, S., et al., 2008. In situ analysis of major and trace elements of anhydrous minerals by LA-ICP-MS without applying an internal standard. Chem. Geol. , 257: 34-43. doi: 10.1016/j.chemgeo.2008.08.004 [20] Long, X.P., Sun, M., Yuan, C., et al., 2007. Detrital zircon age and Hf isotopic studies for metasedimentary rocks from the Chinese Altai: implications for the Early Paleozoic tectonic evolution of the Central Asian Orogenic belt. Tectonics, 26. doi: 10.1029/2007TC002128 [21] Lu, S.N., Zhao, G.C., Wang, H.C., et al., 2008. Precambrian metamorphic basement and sedimentary cover of the North China craton: a review. Precambrian Research, 160: 77-93. doi: 10.1016/j.precamres.2007.04.017 [22] Ludwig, K.R., 2003. User's manual for isoplot 3.0: a geochronological toolkit for microsoft excel. Berkeley Geochronology Center. Special Publication, 4: 1-71. [23] Mángano, M.G., Buatois, L.A., Wu, X.T., et al., 1994. Sedimentary facies, depositional processes and climatic controls in a Triassic lake, Tanzhuang Formation, western Henan Province, China. Journal of Paleolimnology, 11: 41-65. doi: 10.1007/BF00683270 [24] Meng, Q.R., Zhang, G.W., 2000. Geologic framework and tectonic evolution of the Qinling orogen, Central China. Tectonophysics, 323: 183-196. doi: 10.1016/S0040-1951(00)00106-2 [25] Morton, A., Fanning, M., Milner, P., 2008. Provenance characteristics of Scandinavian basement terrains: constraints from detrital zircon ages in modern river sediments. Sedimentary Geology, 210: 61-85. doi: 10.1016/j.sedgeo.2008.07.001 [26] Qi, Y.A., Hu, B., Zhang, G.C., et al., 2007. Ichnofabrics and their environmental interpretation from middle Triassic Youfangzhuang Formation, Jiyuan region, western Henan Province. Acta Sedimentologica Sinica, 25(3): 372-379 (in Chinese with English abstract). http://www.researchgate.net/publication/292754470_Ichnofabrics_and_their_environmental_interpretation_from_middle_Triassic_Youfangzhuang_Formation_Jiyuan_region_western_Henan_Province [27] Qin, J.F., Lai, S.C., Grapes, R., et al., 2010. Origin of Late Triassic high-Mg adakitic granitoid rocks from the Dongjiangkou area, Qinling orogen, Central China: implications for subduction of continental crust. Lithos, 120: 347-367. doi: 10.1016/j.lithos.2010.08.022 [28] Ratschbacher, L., Hacker, B.R., Calvert, A., et al., 2003. Tectonics of the Qinling (Central China): tectonostratigraphy, geochronology, and deformation history. Tectonophysics, 366: 1-53. doi: 10.1016/S0040-1951(03)00053-2 [29] Sun, W.D., Li, S.G., Sun, Y., et al., 2002. Mid-paleozoic collision in the north Qinling: Sm-Nd, Rb-Sr and 40Ar/39Ar ages and their tectonic implications. Journal of Asian Earth Sciences, 21: 69-76. doi: 10.1016/S1367-9120(02)00010-X [30] Wan, Y.S., Wilde, S.A., Liu, D.Y., et al., 2006a. Further evidence for 1.85 Ga metamorphism in the Central Zone of the North China craton: SHRIMP U-Pb dating of zircon from metamorphic rocks in the Lushan area, Henan Province. Gondwana Research, 9: 189-197. doi: 10.1016/j.gr.2005.06.010 [31] Wan, Y.S., Song, B., Liu, D.Y., et al., 2006b. SHRIMP U-Pb zircon geochronology of Palaeoproterozoic metasedimentary rocks in the North China craton: evidence for a major Late Palaeoproterozoic tectonothermal event. Precambrian Research, 149: 249-271. doi: 10.1016/j.precamres.2006.06.006 [32] Wang, T., Zhang, Z.Q., Wang, X.X., et al., 2005. Neoproterozoic collisional deformation in the core of the Qinling orogen and its age: constrained by zircon SHRIMP dating of strongly deformed syn-collisional granites and weakly deformed granitic veins. Acta Geologica Sinica, 79(2): 220-231 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DZXE200502010.htm [33] Wang, Y.J., Zhao, G.C., Xia, X.P., et al., 2009. Early Mesozoic unroofing pattern of the Dabie Mountains (China): constraints from the U-Pb detrital zircon geochronology and Si-in-white mica analysis of synorogenic sediments in the Jianghan basin. Chemical Geology, 266: 231-241. doi: 10.1016/j.chemgeo.2009.06.012 [34] Weislogel, A.L., Graham, S.A., Chang, E.Z., et al., 2006. Detrital zircon provenance of the Late Triassic Songpan-Ganzi complex: sedimentary record of collision of the North and South China blocks. Geological Society of America, 34(2): 97-100. doi: 10.1130/G21929 [35] Wu, Z.P., Hou, X.B., Li, W., 2007. Discussion on Mesozoic basin patterns and evolution in the eastern North China block. Geotectonica et Metallogenia, 31(4): 385-399 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DGYK200704002.htm [36] Xia, X.P., Sun, M., Zhao, G.C., et al., 2006a. LA-ICP-MS U-Pb geochronology of detrital zircons from the Jining complex, North China craton and its tectonic significance. Precambrian Research, 144: 199-212. doi: 10.1016/j.precamres.2005.11.004 [37] Xia, X.P., Sun, M., Zhao, G.C., et al., 2006b. U-Pb and Hf isotopic study of detrital zircons from the Wulashan khondalites: constraints on the evolution of the Ordos terrane, western block of the North China craton. Earth and Planetary Science Letters, 241: 581-593. doi: 10.1016/j.epsl.2005.11.024 [38] Xu, J.F., Zhang, B.R., Han, Y.W., 2008. Geochemistry of the Mian-Lue ophiolites in the Qinling Mountains, Central China: constraints on the evolution of the Qinling orogenic belt and collision of the North and South China cratons. Journal of Asian Earth Sciences, 32: 336-347. doi: 10.1016/j.jseaes.2007.11.004 [39] Xu, Y.J., Du, Y.S., Cawood, P.A., et al., 2010. Detrital zircon record of continental collision: assembly of the Qilian orogen, China. Sedimentary Geology, 230: 35-45. doi: 10.1016/j.sedgeo.2010.06.020 [40] Yan, Q.R., Chen, J.L., Wang, Z.Q., et al., 2008a. Zircon U-Pb and geochemical analyses for leucocratic intrusive rocks in pillow lavas in the Danfeng group, North Qinling Mountains, China. Science in China (Ser. D): Earth Sciences, 51(2): 249-262. doi: 10.1007/s11430-007-0144-3 [41] Yan, Q.R., Wang, Z.Q., Yan, Z., et al., 2008b. Origin, age and tectonic implications of metamafic rocks in the Kuanping Group of the Qinling orogenic belt, China. Geological Bulletin of China, 27(9): 1475-1492 (in Chinese with English abstract). http://www.researchgate.net/publication/279667691_Origin_age_and_tectonic_implications_of_metamafic_rocks_in_the_Kuanping_Group_of_the_Qinling_orogenic_belt_China [42] Yan, Z., Wang, Z.Q., Chen, J.L., et al., 2009. Geochemistry and SHRIMP zircon U-Pb dating of amphibolites from the Danfeng Group in the Wuguan area, North Qinling terrane and their tectonic significance. Acta Geologica Sinica, 83(11): 1633-1646 (in Chinese with English abstract). http://www.zhangqiaokeyan.com/academic-journal-cn_acta-geologica-sinica_thesis/0201252708051.html [43] Yang, J.H., Du, Y.S., Cawood, P.A., et al., 2009. Silurian collisional suturing onto the southern margin of the North China craton: detrital zircon geochronology constraints from the Qilian orogen. Sedimentary Geology, 220: 95-104. doi: 10.1016/j.sedgeo.2009.07.001 [44] Yang, J.H., Cawood, P.A., Du, Y.S., 2010. Detrital record of mountain building: provenance of Jurassic foreland basin to the Dabie Mountains. Tectonics, 29: TC4011. doi: 10.1029/2009TC002600 [45] Yang, J.S., Liu, F.L., Wu, C.L., et al., 2003. Two ultrahigh pressure metamorphic events recognized in the central orogenic belt of China: evidence from the U-Pb dating of coesite-bearing zircons. Acta Geologica Sinica, 77(4): 463-477 (in Chinese with English abstract). [46] Yin, C.Q., Zhao, G.C., Sun, M., et al., 2009. LA-ICP-MS U-Pb zircon ages of the Qianlishan complex: constrains on the evolution of the Khondalite belt in the western block of the North China craton. Precambrian Research, 174: 78-94. doi: 10.1016/j.precamres.2009.06.008 [47] Zhang, G.C., Zeng, Y.F., Buatois, L.A., et al., 2005. Lacustrine deposits and associated trace fossils in the upper part of the Tanzhuang Formation (T2-3), Jiyuan basin, Henan Province. Acta Sedimentologica Sinica, 23(1): 100-107 (in Chinese with English abstract). http://www.researchgate.net/publication/292759763_Lacustrine_deposits_and_associated_trace_fossils_in_the_upper_part_of_the_Tanzhuang_Formation_T2-3_Jiyuan_basin_Henan_Province [48] Zhang, H.F., Zhao, Z.D., Luo, T.C., et al., 1995. Crustal growth and lower crust nature of North Qinling: study of Sm-Nd isotopic model ages. Acta Petrologica Sinica, 11(2): 160-170 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-YSXB199502005.htm [49] Zhang, Z.Q., Liu, D.Y., Fu, G.M., 1994. Isotopic geochronology of metamorphic strata in North Qinling, China. Geological Publishing House, Beijing (in Chinese). [50] Zhao, G.C., Wilde, S.A., Sun, M., et al., 2008. SHRIMP U-Pb zircon ages of granitoid rocks in the Lüliang Complex: implications for the accretion and evolution of the Trans-North China orogen. Precambrian Research, 160: 213-226. doi: 10.1016/j.precamres.2007.07.004 [51] Zhen, J.P., Griffin, W.L., O'Reilly, S.Y., et al., 2006. Zircons in mantle xenoliths record the Triassic Yangtze-North China continental collision. Earth and Planetary Science Letters, 247: 130-142. doi: 10.1016/j.epsl.2006.05.011 [52] Zong, K.Q., Liu, Y.S., Gao, C.G., et al., 2010. In situ U-Pb dating and trace element analysis of zircons in thin sections of eclogite: refining constraints on the ultra-high pressure metamorphism of the Sulu terrane, China. Chemical Geology, 269: 237-251. doi: 10.1016/j.chemgeo.2009.09.021 [53] 陈强, 陈能松, 王勤燕, 等, 2006b. 秦岭造山带秦岭岩群独居石电子探针化学年龄: 晚泛非期变质证据?科学通报, 51(21): 2645-2650. https://www.cnki.com.cn/Article/CJFDTOTAL-KXTB200621009.htm [54] 冯祖杰, 周旗, 王军, 等, 1997. 豫西南中新生代古地理环境变迁. 河南地质, 15(4): 270-277. https://www.cnki.com.cn/Article/CJFDTOTAL-HNDD704.003.htm [55] 凌文黎, 段瑞春, 柳小明, 等, 2010. 南秦岭武当山群碎屑锆石U-Pb年代学及其地质意义. 科学通报, 55(12): 1153-1161. https://www.cnki.com.cn/Article/CJFDTOTAL-KXTB201012012.htm [56] 凌文黎, 任邦方, 段瑞春, 等, 2007. 南秦岭武当山群、耀岭河群及基性侵入岩群锆石U-Pb同位素年代学及地质意义. 科学通报, 52(12): 1445-1456. doi: 10.3321/j.issn:0023-074X.2007.12.015 [57] 刘军锋, 孙勇, 张红, 2007. 北秦岭罗汉寺岩群锆石年龄及地质意义. 西北大学学报(自然科学版), 37(6): 907-911. https://www.cnki.com.cn/Article/CJFDTOTAL-XBDZ200706007.htm [58] 刘军锋, 孙勇, 孙卫东, 2009. 秦岭拉鸡庙镁铁质岩体锆石LA-ICP-MS年代学研究. 岩石学报, 25(2): 320-330. https://www.cnki.com.cn/Article/CJFDTOTAL-YSXB200902007.htm [59] 刘少峰, 张国伟, 2008. 东秦岭一大别山及邻区盆一山系统演化与动力学. 地质通报, 27(12): 1943-1960. doi: 10.3969/j.issn.1671-2552.2008.12.001 [60] 齐永安, 胡斌, 张国成, 等, 2007. 豫西济源地区中三叠世油房庄组遗迹组构及其环境解释. 沉积学报, 25(3): 372-379. doi: 10.3969/j.issn.1000-0550.2007.03.007 [61] 王涛, 张宗清, 王晓霞, 等, 2005. 秦岭造山带核部新元古代碰撞变形及其时代: 强变形同碰撞花岗岩与弱变形脉体锆石SHRMP年龄限定. 地质学报, 79(2): 220-231. doi: 10.3321/j.issn:0001-5717.2005.02.008 [62] 吴智平, 侯旭波, 李伟, 2007. 华北东部地区中生代盆地格局及演化过程探讨. 大地构造与成矿学, 31(4): 385-399. doi: 10.3969/j.issn.1001-1552.2007.04.001 [63] 闫全人, 陈隽璐, 王宗起, 等, 2007. 北秦岭小王涧枕状熔岩中淡色侵入岩的地球化学特征、SHRIMP年龄及地质意义. 中国科学(D辑), 37(10): 1301-1313. https://www.cnki.com.cn/Article/CJFDTOTAL-JDXK200710005.htm [64] 闫全人, 王宗起, 闫臻, 等, 2008b. 秦岭造山带宽坪群中的变铁镁质岩的成因、时代及其构造意义. 地质通报, 27(9): 1475-1492. https://www.cnki.com.cn/Article/CJFDTOTAL-ZQYD200809012.htm [65] 闫臻, 王宗起, 陈隽璐, 等, 2009. 北秦岭武关地区丹凤群斜长角闪岩地球化学特征、锆石SHRIMP测年及其构造意义. 地质学报, 83(11): 1633-1646. doi: 10.3321/j.issn:0001-5717.2009.11.008 [66] 杨经绥, 刘福来, 吴才来, 等, 2003. 中央碰撞造山带中两期超高压变质作用: 来自含柯石英锆石的定年证据. 地质学报, 77(4): 463-477. doi: 10.3321/j.issn:0001-5717.2003.04.003 [67] 张国成, 曾玉凤, Buaatois, L.A., 等, 2005. 济源盆地谭庄组(T2-3)上段湖泊沉积及遗迹化石特征. 沉积学报, 23(1): 100-107. doi: 10.3969/j.issn.1000-0550.2005.01.013 [68] 张宏飞, 赵志丹, 骆庭川, 等, 1995. 从岩石Sm-Nd同位素模式年龄论北秦岭地壳增生和地壳深部性质. 岩石学报, 11(2): 160-170. doi: 10.3321/j.issn:1000-0569.1995.02.008 [69] 张宗清, 刘敦一, 付国民, 1994. 北秦岭变质地层同位素年代学. 北京: 地质出版社. -
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