Abstract
Chronology and geochemistry of the Shangyu gabbro-diorite in western Shandong were studied to understand their petrogenesis and the nature of the Mesozoic lithospheric mantle. The Shangyu intrusion is mainly composed of a suite of gabbro-diorite. Zircons from the intrusion display euhedral-subhedral in shape and have high Th/U ratios (1.23–2.87), implying their magmatic origin. LA-ICP-MS zircon U-Pb dating results for two samples indicate that they were formed in the Early Cretaceous, yielding weighted mean 206Pb/238U ages of 129±1Ma and 134±2Ma, respectively. Except for early cumulate such as sample QT-19, their SiO2 and MgO contents range from 50.12% to 56.37% and from 3.52% to 6.37%, respectively. Moreover, the gabbro-diorites are characterized by high Mg (0.54–0.63), enrichment in Na (Na2O/K2O ratios more than 1), Cr (73×10−6−217×10−6) and Ni (34×10−6−241×10−6), and intensive enrichments in light rare earth elements (LREEs) and large ion lithophile elements (LILEs) and depletion in high field strength elements (HFSEs). Their initial 87Sr/86Sr ratios and ɛ Nd(t) values range from 0.70962 to 0.71081 and from −16.60 to −13.04, respectively. Taken together with the Early Cretaceous high-Mg diorites and the mantle xenoliths from the Tietonggou and Jinling as well as basalts from the Fangcheng and Feixian, it is suggested that the primary magma for the Shangyu gabbro-diorites should be derived from the enriched lithospheric mantle intensively modified by continental crust. The Sr-Nd-Pb isotopic compositions for the Early Cretaceous high-Mg diorites in western Shandong display a trend of spatial variations, i.e., initial 87Sr/86Sr, 207Pb/204Pb and 208Pb/204Pb ratios decreasing and ɛ Nd(t) values increasing from southeast to northwest in western Shandong, which is consistent with the tectonic model that the Yangtze Craton subducted beneath the North China Craton oriented in north-west direction in the Early Mesozoic.
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References
Fan W, Menzies M A. Destruction of aged lower lithosphere and accretion of asthenosphere mantle beneath eastern China. Geotectonica et Metallogenia, 1992, 16: 171–180
Lu F X, Zheng J P. Paleozoic lithospheric mantle and deep processes in North China platform. In: Chi J S, Lu F X, eds. Kimberlite, Paleaolithosphere and Diamond Prospecting in the North China Platform (in Chinese). Beijing: Science Press, 1996. 215–274
Griffin W L, Zhang A, O’Reilly S Y. Phanerozoic evolution of the lithosphere beneath the Sino-Korean craton. In: Flower M F J, Chung S L, Lo C H, eds. Mantle Dynamics and Plate Interaction in East Asia. Washington D C: American Geophysical Union, Geodynamics Series 27, 1998. 100: 107–126
Menzies M A, Xu Y. Geodynamics of the North China craton. In: Flower M F J, Chung S L, Lo C H, eds. Mantle Dynamics and Plate Interaction in East Asia. Washington D C: American Geophysical Union, Geodynamics Series 27, 1998. 100: 155–164
Wu F Y, Sun D Y. The Mesozoic magmatism and lithospheric thinning in eastern China. J Changchun Uni Sci Tech (in Chinese with English abstract), 1999, 29(4): 313–318
Zheng J P. Mesozoic-Cenozoic mantle replacement and lithospheric thinning beneath the eastern China (in Chinese). Wuhan: China University of Geosciences Press, 1999. 1–126
Lu F X, Zheng J P, Li W P, et al. The main evolution pattern of Phanerozoic mantl evolution in the eastern China: The “mushroom cloud” model. Earth Sci Front (in Chinese with English abstract), 2000, 7(1): 97–107
Xu W L, Wang D Y, Wang S M. PTtC model of Mesozoic and Cenozoic volcanism and lithospheric evolution. J Changchun Uni Sci Tech (in Chinese with English abstract), 2000, 30(4): 329–335
Wu F Y, Ge W C, Sun D Y, et al. Discussions on the lithospheric thinning in eastern China. Earth Sci Front (in Chinese with English abstract), 2003, 10(3): 51–60
Xu W L, Wang D Y, Gao S, et al. Discovery of dunite and pyroxenite xenoliths in Mesozoic diorite at Jinling, western Shandong and its significance. Chin Sci Bull, 2003, 48(15): 1599–1603
Xu W L, Wang D Y, Lin J Q, et al. Petrology and geochemistry of two types of mantle-derived xenoliths in Mesozoic diorite from western Shandong province. Acta Petrol Sin (in Chinese with English abstract), 2003, 19(4): 623–636
Yan J, Chen J F, Xie Z, et al. The mantle-derived xenoliths in Late Cretaceous basalt from eastern Shandong: New evidence of constraints on the time of lithospheric thinning in eastern China. Chin Sci Bull, 2003, 48(19): 2139–2144
Xu W L, Wang D Y, Wang Q H, et al. Metasomatism of silica-rich melts (liquids) in dunite xenoliths from western Shandong, China: implication for Mesozoic lithospheric mantle thinning. Acta Geol Sin (in Chinese with English abstract), 2004, 78(1): 72–80
Zhang H F, Ying J F, Xu P, et al. Mantle olivine xenocrysts entrained in Mesozoic basalts from the North China craton: Implication for replacement process of lithospheric mantle. Chin Sci Bull, 2004, 49(9): 961–966
Xu W L, Chi X G, Yuan C, et al. Mesozoic Dioritic Rocks and Deep-seated Inclusions in Central North China Platform (in Chinese). Beijing: Geological Publishing House 1993 1–164
Chen L H, Zhou X H. Ultramafic xenoliths in Mesozoic diorite in west Shandong Province. Sci China Ser D-Earth Sci, 2004, 47(6): 489–499
Chen L H, Zhou X H. Subduction-related metasomatism in the thinning lithosphere: evidence from a composite dunite-orthopyroxenite xenolith entrained in Mesozoic Laiwu high-Mg diorite, North China Craton. Geochem Geophys Geosyst, 2005, 6, doi:10.1029/2005GC000938
Xu Y G, Ma J L, Huang X L, et al. Early Cretaceous gabbrioc complex from Yinan, Shandong Province: petrogenesis and mantle domains beneath the North China Craton. Inter J Earth Sci (Geol Rundsch), 2004, 93: 1025–1041
Xu W L, Hergt J M, Gao S, et al. Interaction of adakitic melt-peridotite: Implications for the high-Mg# signature of Mesozoic adakitic rocks in the eastern North China Craton. Earth Planet Sci Lett, 2008, 265(1–2): 123–137
Zhang H F, Sun M, Zhou X H, et al. Mesozoic lithosphere destruction beneath the North China Craton: evidence from major-trace-element and Sr-Nd-Pb isotopic studies of Fangcheng basalts. Contrib Mineral Petrol, 2002, 144: 241–253
Pei F P, Xu W L, Wang Q H, et al. Mesozoic basalt and mineral chemistry of the mantle-derived xenocrysts in Feixian, western Shandong, China: constraints on nature of Mesozoic lithospheric mantle. Geol J China Uni (in Chinese with English abstract), 2004, 10(1): 88–97
Zhai M G, Zhu R X, Liu J M, et a1. Time-range of Mesozoic tectonic regime inversion in eastern north China block. Sci China Ser D-Earth Sci, 2004(2): 151–160
Gao S, Zhang B R, Jin Z M. How mafic is the lower continental crust? Earth Planet Sci Lett, 1998, 161: 101–117
Xu W L, Yang C H, Yang D B, et al. Mesozoic high-Mg diorites in eastern North China craton: constraints on the mechanism of lithospheric thinning. Earth Sci Front (in Chinese with English abstract), 2006, 13(2): 120–129
Xu Y G. Thermo-tectonic destruction of the Archean lithosphere, keel beneath the Sino-Korean craton in China: Evidence, timing and mechanism. Phys Chem Earth, 2001, 26A: 747–757
Zhang H F, Sun M, Zhou M F, et al. Highly heterogeneous Late Mesozoic lithospheric mantle beneath the North China Craton: Evidence from Sr-Nd-Pb isotopic systematics of mafic igneous rocks. Geol Mag, 2004, 141(1): 55–62
Zhang H F, Sun M, Zhou M F, et al. Secular evolution of the lithosphere beneath the eastern North China Craton: Evidence from Mesozoic basalts and high-Mg andesites. Geochim Cosmochim Acta, 2003, 67: 4373–4387
Zhang H F, Zhou X H, Fan W M, et al. Nature, composition, enrichment processes and its mechanism of the Mesozoic lithospheric mantle beneath the southeastern North China Craton. Acta Petrol Sin (in Chinese with English abstract), 2005, 21(4): 1271–1280
Xu Y G, Huang X L, Ma J L. Crust-mantle interaction during the tectono-thermal reactivation of the North China craton: constraints from SHRIMP zircon U-Pb chronology and geochemistry of Mesozoic plutons from western Shandong. Contrib Mineral Petrol, 2004, 147: 750–767
Zhang H F, Sun M, Zhou X H, et al. Geochemical constraints on the origin of Mesozoic alkaline intrusive complexes from the North China Craton and tectonic implications. Lithos, 2005, 81: 297–317
Zhao G C, Wilde S A, Cawood P A, et al. Archean blocks and their boundaries in the North China craton: lithological, geochemical, structural and P-T path constraints and tectonic evolution. Precamb Res, 2001, 107: 45–73
The Fourth Geological Research Institute, Bureau of Geology and Mineral Resources of Shandong Province. Geological Memoirs of Shandong Province (in Chinese). Jinan: Shandong Mapping Press, 2003. 331–350
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. Geostandard Newslett, 2004, 28: 353–370
Andersen T. Correction of common lead in U-Pb analyses that do not report 204Pb. Chem Geol, 2002, 192(1–2): 59–79
Boynton W V. Cosmochemistry of the rare earth elements: meteorite studies. In: Henderson P, ed. Rare Earth Element Geochemistry. New York: Elsevier Science Publishing Company Inc. 1984. 63–114
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 China Uni Geosci, 2005, 16(4): 297–308
Sun S S, Mc Donough W F. Chemical and isotopic systematics of oceanic basalts: Implications for mantle composition and processes. In: Saunders A D, Norry M J, eds. Magmatism in the Ocean Basins. Geol Soc Spe Pub, 1989. 42: 313–345
Li C N. Trace Element Petrology of Igneous Rocks (in Chinese). Wuhan: China University of Geosciences Press, 1992. 1–87
Jahn B M, Wu F Y, Lo C H, et al. Crust-mantle interaction induced by deep subduction of the continental crust: Geochemical and Sr-Nd isotopic evidence from post-collisional mafic-ultramafic intrusions of the northern Dabie complex, central China. Chem Geol, 1999, 157: 119–146
Chen J F, Jahn B M. Crustal evolution of southeastern China: Nd and Sr isotopic evidence. Tectonophysics, 1998, 284: 101–133
Jahn B M, Auvray B, Shen Q H, et al. Archean crustal evolution in China: the Taishan complex, and evidence for Juvenile crustal addition from long-term depleted mantle. Precam Res, 1988, 38: 381–403
Li S G, Nie Y H, Hart S R, et al. Interaction between subducted continental crust and the mantle — II. Sr and Nd isotopic geochemistry of the syncollisional mafic-ultramafic intrusions in Dabie Mountains. Sci China Ser D-Earth Sci, 1998, 41(6): 632–638
Zhang L G. Block-Geology of Eastern Asian Lithosphere—Isotopic Geochemistry of Upper Mantle, Basement and Granitoids and Its Dynamics (in Chinese). Beijing: Science Press, 1995. 1–252
Li S G, Yang W. Decoupling of surface and subsurface sutures in the Dabie orogen and a continental-collisional lithospheric-weding model: Sr-Nd-Pb isotopic evidences of Mesozoic igneous rocks in eastern China. Chin Sci Bull, 2003, 48(8): 831–838
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 with English abstract), 2004, 33(3): 221–231
Lin J Q, Tan D J, Jin Y. 40Ar/39Ar ages of Mesozoic igneous activities in western Shandong. Acta Petrol Mineral (in Chinese with English abstract), 1996, 15(3): 213–220
Xu Y G, Huang X L, Ma J L. Crust-mantle interaction during the tectono-thermal reactivation of the North China craton: constraints from SHRIMP zircon U-Pb chronology and geochemistry of Mesozoic plutons from western Shandong. Contrib Mineral Petrol, 2004, 147: 750–767
Luo Z K, Miao L C. Granites and Gold Deposits in Zhaoyuan-Laizhou Area, Eastern Shandong Province (in Chinese). Beijing: Metallurgical Industry Press, 2002. 20–57
Wu F Y, Lin J Q, Wilde S L, et al. Early Cretaceous giant igneous event in eastern China: Evidence from Liaodong Peninsula in NE China. Earth Planet Sci Lett, 2005, 233(1–2): 103–119
Rapp R P, Watson E B. Dehydration melting of metabasalt at 8–32 kbar: implications for continental growth and crust-mantle recycling. J Petrol, 1995, 36: 891–931
Defant M J, Drummond M S. Derivation of some modern arc magmas by melting of young subducted lithosphere. Nature, 1990, 347(18): 662–665
Xu W L, Wang D Y, Liu X C, et al. Discovery of eclogite inclusions and its geological significance in early Jurassic intrusive complex in Xuzhou-northern Anhui, eastern China. Chin Sci Bull, 2002, 47(14): 1212–1216
Xu W L, Gao S, Wang Q H, et al. Mesozoic crustal thickening of the eastern North China Craton: Evidence from eclogite xenoliths and petrologic implications. Geology, 2006, 34(9): 721–724
Xu W L, Wang Q H, Wang D Y, et al. Mesozoic adakitic rocks from the Xuzhou-Suzhou area, eastern China: Evidence for partial melting of delaminated lower continental crust. J Asian Earth Sci, 2006, 27: 230–240
Gao S, Rudnick R L, Yuan H L et al. Recycling lower continental crust in the North China Craton. Nature, 2004, 432: 892–897
Wang D Z, Zhou X M. Petrogenesis of Late Mesozoic Granitoid Volcanic-intrusive Complex in Southeastern China and Crustal Evolution (in Chinese). Beijing: Science Press, 2002. 1–53
Wu F Y, Han R H, Yang J H, et al. Initial constraints on granitic magmatism in North Korea using U-Pb zircon geochronology. Chem Geol, 2007, 238: 232–248
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 with English abstract), 2001, 30(6): 517–524
Dai S Q, Deng J F, Wu Z X, et al. Evidence of magmatic petrology for the Yanshanian orogeny in the Dabie orogen. Geol China (in Chinese with English abstract), 2003, 30(2): 159–165
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 with English abstract), 2003, 32(3): 208–222
Maruyama S, Seno T. Orogeny and relative plate motion: example of the Japanese islands. Tectonophysics, 1986, 127: 305–329
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Supported by the National Natural Science Foundation of China (Grant No. 40472033) and the State Key Laboratory of Continental Dynamics, Northwest University
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Yang, C., Xu, W., Yang, D. et al. Petrogenesis of Shangyu gabbro-diorites in western Shandong: Geochronological and geochemical evidence. Sci. China Ser. D-Earth Sci. 51, 481–492 (2008). https://doi.org/10.1007/s11430-008-0029-0
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DOI: https://doi.org/10.1007/s11430-008-0029-0