华北东南部中生代岩石圈地幔性质、组成、富集过程及其形成机理
Nature, composition, enrichment processes and its mechanism of the Mesozoic lithospheric mantle beneath the southeastern North China Craton
-
摘要: 本文通过对我国华北东南部中生代幔源岩浆活动的时空分布规律及其地球化学特征的系统总结来进一步厘定该地区中生代岩石圈地幔的性质和组成，并通过与华北内部如鲁中地区中生代岩石圈地幔的对比研究探讨华北东部岩石圈的时空演化规律、富集过程及其形成机理。幔源岩石的Sr—Nd—Pb同位素特征表明华北东部中生代岩石圈地幔存在明显的时空不均匀性，其中心部位如鲁中地区以弱富集地幔为主体；而东南部如鲁西南和胶东地区则为类似EM2型地幔（^87Sr／^86Sri可高达0．7114）。华北东南部中生代岩石圈地幔随时间的演化特征也很明显。这些幔源岩石的地球化学特征和玄武岩中地幔岩捕虏体（橄榄岩和辉石岩）和捕虏晶（橄榄石和辉石）的组成和结构特征皆证明华北东南部中生代岩石圈地幔曾受到过富硅熔体的强烈改造。橄榄岩-熔体的相互反应是该区岩石圈改造和组成转变的重要方式，从而造成古生代高镁橄榄岩转变为晚中生代低镁橄榄岩和辉石岩。进入岩石圈地幔的熔体具下／中地壳物质重熔的特征，从而导致该区晚中生代岩石圈地慢的快速富集。有关华北东部中生代岩石圈减薄和改造的时限、过程和机制等问题也进行较详细的讨论。Abstract: This paper aims to constrain the nature and composition of the Mesozoic lithospheric mantle beneath the southeastern North China Craton on the basis of a systematic review on the temporal and spatial distribution and geochemical features of Mesozoic mantle-derived magmatism in the region,and to farther understand the temporal and spatial evolution,enrichment processes and its mechanism of the lithosphere through the comparison with the Mesozoic lithospheric mantle beneath the central,i.e.Luzhong region. Sr-Nd-Pb isotopic features of mantle-derived rocks imply that apparently temporal and spatial heterogeneity of the Mesozoic lithospheric mantle existed beneath the eastern North China Craton,the mantle under the central North China Craton,i.e the Luzhong region was dominantly slightly enriched and that under the southeastern North China Craton such as Luxi and Jiaodong region was EM2-like (~(87)Sr/~(86)Sr_i up to 0.7114).It is also apparent that the Mesozoic lithospheric mantle beneath the southeastern North China Craton evolved with time.These geochemical features of mantle-derived rocks and compositional and textural characteristics of the basalt-borne mantle xenoliths (peridotites and pyroxenites) and xenoerysts (olivine and pyroxene) demonstrate that the Mesozoic lithospherie mantle beneath the southeastern North China Craton was severely affected by the silica-rich melts.Reaction between lithospheric peridotite and infiltrated melt was considered to be an important type of lithospheric reconstruction and transformation,which led to the transformation of the Paleozoic high-Mg~# peridotite to late Mesozoic low-Mg~# peridotite and pyroxenite.Influx of melts into the lithospheric mantle, which had the geochemical characteristics of partial melting of the lower/middle crust,resulted in rapid enrichment of the late Mesozoic lithospheric mantle beneath the southeastern North China Craton.Relevant scientific issues such as the timing,processes and its mechanism of Mesozoic lithospheric thinning and reconstruction of the eastern North China Craton have also been discussed.
-
Key words:
- Mesozoic /
- Mantle-derived rocks /
- Lithospheric mantle /
- North China Craton /
-
-
[1] Chen B, Jahn B M, Arakawa Y, et al. 2004. Petrogenesis of the Mesozoic intrusive complexes from the southern Taihang Orogen,North China Craton: elemental and Sr-Nd-Pb isotopic constraints.Contributions to Mineralogy and Petrology, 148:489 -501
[2] Chen B, Zhai M G. 2003. Geochemistry of late Mesozoic lamprophyre dikes from the Taihang Mountains, North China and implications for the sub-continental lithospheric mantle. Geological Magazine, 140(1): 87 -93
[3] Chen Bin, Tian Wei, Zhai Mingguo, et al. 2005. Zircon U-Pb geochronology and geochemistry of the Mesozoic magmatism in the Taihang Mountains and other places of the North China Craton, with implications for petrogenesis and geodynamic setting. Acta Petrologica Sinica, 21 ( 1 ), 13 - 24 ( in Chinese)
[4] Chen Lihui, Zhou Xinhua. 2004. Ultramafic xenoliths in Mesozoic diorite in west Shandong Province. Science in China (D), 47 (6): 489 -499 ( in Chinese)
[5] Chen Luhui, Zhou Xinhua, Chen Shaohai, et al. 2000. Chromite lamellae in olivine of dunite. Seisemology and Geology, 22: 79 - 86( in Chinese)
[6] Chi Jishang, Lu Fengxiang, Zhao Lei, et al. 1996. Kimberlites on the North China Craton and features of Paleozoic lithospheric mantle.Beijing: Science Press (in Chinese)
[7] Coffin M F, Pringle M S, Duncan R A, et al. 2002. Kerguelen hotspot magma output since 130 Ma. Journal of Petrology, 43: 1121 - 1139
[8] DengJ F, Mo X X, Zhao H L, et al. 2004. A new model for the dynamic evolution of Chinese lithosphere: "continental roots plume tectonics". Earth Science Review, 65:223 -275
[9] Deng Jinfu, Zhao Hailing, Mo Xianxue, et al. 1996. Continental rootsplume tectonics of China Key to the continental dynamics. Gelogical Publishing House, Beijing (in Chinese)
[10] DePaolo D J, Daley E E. 2002. Neodymium isotopes in basalts of the southwest basin and range and the lithospheric thinning during continental extension. Chemical Geology, 169: 157-185
[11] Falloon T J, Green D H, Harton C J, et al. 1988. Anhydrous partial melting of a fertile and depleted peridotite from 2 to 30 Kb and application to basalt petrogenesis. Journal of Petrology, 29:1257 -1282
[12] Fan W M, Guo F, Wang Y J, et al. 2001. Post-orogenic bimodal volcanism along the Sulu orogenic belt in eastern China: Physics and Chemistry of the Earth (A), 26:733 -746
[13] Fan W M, Guo F, Wang Y J, et al. 2004. Late Mesozoic volcanism in the northern Huaiyang tectono-magmatic belt, central China: partial melts from a lithospheric mantle with subducted continental crust relicts beneath the Dabie orogen. Chemical Geology, 209:27 -48
[14] Fan Weiming, Menzies M A. 1992. Destruction of aged lower lithosphere and accretion of asthenosphere mantle beneath eastern China.Geotectonica et Metallogenia, 16: 171 - 180 ( in Chinese)
[15] Fan W M, Zhang H F, Baker J, et al. 2000. On and off the North China Craton: where is the Archaean keel? Journal of Petrology, 41: 933 -950
[16] Gao S Rudnick R. Carlson R W. et al. 2002. Re-Os evidence for replacement of ancient mantle lithosphere beneath the North China craton. Earth and Planetary Science Letters, 198:307 -322
[17] Gao S, Rudnick R, Yuan H L, \'et al. 2004. Recycling lower continental crust in the North China craton. Nature, 432:892 -897
[18] Guo F, Fan W M, Wang Y J, et al. 2001. Late Mesozoic Mafic Intrusive Complexes in the North China Block: Constraints on the Nature of Subcontinental Lithospheric Mantle. Physics and Chemistry of the Earth (A), 26:759-771
[19] Guo F, Fan W M, Wang Y J, et al. 2003. Geochemistry of late Mesozoic mafic magmatism in west Shandong Province , eastern China :characterizing the lost lithospheric mantle beneath the North China Block. Geochemical Journal, 40: 63 - 77
[20] Griffin W L, O\'Reilly S Y, Ryan C G. 1992. Composition and thermal structure of the lithosphere beneath South Africa, Siberia and China:proton microprobe studies. International Symposium on Cenozoic Volcanic Rocks and Deep-seated Xenoliths of China and its Environs, Beijing, 1 - 20
[21] Griffin W L, Zhang A D, O \'Reilly S Y, et al. 1998. Phanerozoic evolution of the lithosphere beneath the Sino-Korean Craton. In:Flower MF, Chung SL, Lo CH, et al (eds). Mantle dynamics and Plate Interaction in East Asia. Wastington DC: Am Geophys Union Monograph, 27: 107 - 126
[22] Harris J W, Duncan D J, Zhang F, et al. 1994. The physical characteristics and syngenetic inclusion geochemistry of diamonds from Pipe 50, Liaoning province, People\'s Republic of China. In:Meyer H O A and Leonardos O H ( eds. ) Proc. 5th Int. Kimberlites Conf. 1. Diamonds: characterization, genesis and exploration.CPRM, Brasilia, P106-115
[23] Li Xiaoyong, Fan Weiming, Guo Feng. 2004. Modification of the lithospheric mantle beneath the northern China Block by the PaleoAsian Ocean: geochemical evidence from mafic volcanic rocks of the Nandaling Formation in the Xishan area, Beijing. Acta Petrologica Sinica, 20(3): 557-566 (in Chinese)
[24] Lin Ge, Zhang Yuehua, Wang Yuejun, et al. 2004. Lithospheric thinning in the North China Block: A numerical approach on thermal perturbation and tectonic extension. Geotectonica et Metallogenia,28 (1):8-14 (in Chinese)
[25] Lu Fengxiang, Zheng Jian, Li Wuping, et al. 2000. The Main Evolution Pattern of Phanerozoic Mantle in the Eastern China: The "Mushroom Cloud" Model. Earth Science Frontiers, 7 ( 1 ): 97 - 107 ( in Chinese)
[26] Ma Xingyuan. 1987. Lithospheric dynamics map of China and adjacent seas (1: 4,000,000) and explanatory notes. Geological Publishing House, Beijing ( in Chinese)
[27] Menzies M A, Fan W M, Zhang M. 1993. Paleozoic and Cenozoic lithoprobes and the loss of 》 120 km of Archaean lithosphere, SinoKorean Craton, China. Geol. Soc. Spel. Pub. , 76:71 -78
[28] Menzies M A, Xu YG. 1998. Geodynamics of the North China Craton.In: Mantle Dynamics and Plate Interactions in East Asia (eds.Flower M, Chung S-L, Lo C-H and Lee T-Y). Am. Geophys.Union Geodynamic Series, 27, 155 -165
[29] Meyer H O A, Zhang A, Milledge H J, et al. 1994. Diamonds and inclusions in diamonds from Chinese kimberlites. In: Meyer H OA and Leonardos O H (eds.) Proc. 5th Int. Kimberlites Conf. 1. Diamonds: characterization, genesis and exploration. CPRM,Brasilia, P98 - 105
[30] Pei Fuping, Xu Wenliang, Wang Haiqing, et al. 2004. Mesozoic basalt and mineral chemistry of the mantle-derived xenocrysts in Feixian,Western Shandong, China: constraints on nature of Mesozoic lithospheric mantle. Geological Journal of China Universities, 10(1): 88 -97 (in Chinese)
[31] Qiu J S, Xu X S, Lo Q H. 2002. Potassium-rich volcanic rocks and lamprophyres in western Shandong Province: 40Ar-39 Ar dating and source tracing: Chinese Science Bulletin, 47(2): 91 -99
[32] Ren J Y, Tamaki K, Li S T, et al. 2002. Late Mesozoic and Cenozoic rifting and its dynamics setting in eastern China and adjacent areas.Tectonophysics, 344: 175 - 205
[33] Wang W, Gasparik T. 2001. Metasomatic clinopyroxene inclusions in diamonds from the Liaoning province, China. Geochim.Cosmochim. Acta, 65: 611 -620
[34] Wang Y J, Fan W M, Peng T P, et al. , 2004. Nature of the Mesozoic lithospheric mantle and tectonic decoupling beneath the Dabie Orogen, Central China: evidence from 40Ar/39Ar geochronology,elemental and Sr-Nd-Pb isotopic compositions of early Cretaceous mafic rocks. Chemical Geology, in press
[35] Wu Fuyuan, Ge Wenchun, Sun Deyou, et al. 2003. Discussions on the lithospheric Thinning in Eastern China. Earth Science Frontiers, 10(3): 51 -60 (in Chinese)
[36] Wu F Y, Walker R, Ren X W, et al. 2003. Osmium isotopic constrains on the age of lithospheric mantle beneath northeastern China.Chemical Geology, 196: 107 - 129
[37] Xia Qiongxia, Zhi Xiacheng, Meng Qin, et al. 2004. The trace element and Re-Os isotopic geochemistry of mantle-derived peridotite xenoliths from Hannuoba: Nature and age of SCLM beneath the area.Acta Petrologica Sinica, 20(5): 1215 - 1224 (in Chinese)
[38] Xu Yigang. 2004. Lithospheric thinning beneath North China: A temporal and spatial perspective. Geological Journal of China Universities, 10 (3): 324 -331 (in Chinese)
[39] Xu Y G. 2001. Thermo-tectonic destruction of the Archaean lithospheric keel beneath the Sino-Korean Craton in China: Evidence, Timing and Mechanism. Phys. Chem. Earth (A), 26:747-757
[40] Xu Y G. , Huang X L, Ma J L, et al. 2004a. 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. Contributions to Mineralogy and Petrology, 147:750 -767
[41] Xu Y G, Ma J L, Huang X L, et al. 2004b. Early Cretaceous gabbroic complex from Yinan, Shandong Province: petrogenesis and mantle domains beneath the North China Craton. International Joarnal of Earth Sciences, 93: 1025 - 1041
[42] Xu Wenliang. 1992. Mesozoic upper mantle character evidence from ultramafic xenoliths in appinites. Journal of Changchun University of Earth Sciences, 7:18 -26 (in Chinese)
[43] Xu W L, Wang D Y, Gao S, et al. 2003. Discovery of dunite and pyroxenite xenoliths in Mesozoic diorite at Jinling, western Shandong and its significance, Chinese Science Bulletin, 48 ( 15 ): 1599 -1604
[44] Yan Guohan, Xu Baoliang, Mu Baoping, et al. 2001. Characteristics and implications of Nd, Sr, Pb in Mesozoic alkaline-rich intrusions in North China. Bulletin of Mineralogy, Petrology and Geochemistry,20(4): 234 -338 (in Chinese)
[45] Yan J, Chen J F, Xie Z, et al. 2003. Mantle xenoliths from Late Cretaceous basalt in eastern Shandong Province: New constraint on the timing of lithospheric thinning in eastern China, Chinese Science Bulletin, 48 (19): 2139 -2144
[46] Yang J H, Chung S L, Zhai M G, et al. 2004. Geochemical and Sr-NdPb isotopic compositions of mafic dikes from the Jiaodong Peninsula,China: evidence for vein-plus-peridotite melting in the lithospheric mantle. Lithos, 73:145-160
[47] Ying J F, Zhou X H, Zhang H F. 2004. Geochemical and isotopic investigation of the Laiwu-Zibo carbonatites from western Shandong Province, China and implications for their petrogenesis and enriched mantle source. Lithos, 75: 413 -426
[48] Ying J F, Zhou X H, Zhang H F. 2005. The geochemical variations of mid-Cretaceous lavas across western Shandong province, China and their tectonic implications. International Journal of Earth Sciences,Doi 10. 1007/s00531-005-0509-9
[49] Zhai M. G, Zhu R X, Liu, J M, et al. 2003. Time range of Mesozoic tectonic regime inversion in eastern North China block. Science in China (D), 47:151 -159
[50] Zhang H F, Sun M. 2002. Geochemistry of Mesozoic basalts and mafic dikes in southeastern North China craton, and tectonic implication.International Geololgy Review, 44: 370 - 382
[51] Zhang H F, Sun M, Zhou X H, et al. 2002. Mesozoic lithosphere destruction beneath the North China Craton: evidence from major,trace element, and Sr-Nd-Pb isotope studies of Fangcheng basalts.Contributions to Mineralogy and Petrology, 144: 241 - 253
[52] Zhang H F, Sun M, Zhou X H, et al. 2003. Secular evolution of the lithosphere beneath the eastern North China Craton: evidence from Mesozoic basalts and high-Mg andesites. Geochimica et Cosmochimica Acta, 67:4373-4387
[53] Zhang H F, Sun M, Zhou M F, et al. 2004a. Highly heterogeneous Late Mesozoic lithospheric mantle beneath the North China Craton:evidence from Sr-Nd-Pb isotopic systematics of mafic igneous rocks.Geological Magazine, 141: 55 -62
[54] Zhang H F, Sun M, Zhou X H, et al. 2005. Geochemical constraints on the origin of Mesozoic alkaline intrusive complexes from the North China Crnton and tectonic implications. Lithos, 81: 297 -317
[55] Zhang H F, Ying J F, Xu P. 2004b. Mantle olivine xenocrysts entrained in Mesozoic basalts from the North China craton: implication for replacement process of lithospheric mantle. Chinese Science Bulletin, 49(8): 784-789
[56] Zheng Jianping. 1999. Mesozoic-Cenozoic mantle replacement and lithospheric thinning, east China. University of Geosciences Press,Wuhan ( in Chinese)
[57] Zheng J P, O\'Reilly S Y, Griffin W L, et al. 2001. Relict refractory mantle beneath the eastern North China block: significance for lithosphere evolution. Lithos, 57: 43 - 66
[58] 陈斌,田伟,翟明国.2005.太行山和华北其他地区中生代岩浆作用的锆石U-Pb年代学和地球化学特征及其岩浆成因和地球动力学意义.岩石学报,21(1),13-24
[59] 陈立辉,周新华.2003.鲁西中生代闪长岩中的深源超镁铁质岩捕虏体及其富硅交代特征.中国科学(D)33,734-744
[60] 陈立辉,周新华,陈绍海,等.2000.纯橄岩中橄榄石的铬铁矿出溶页片.地震地质,22(增刊):79-86
-
计量
- 文章访问数: 9682
- PDF下载数: 11818
- 施引文献: 0
下载: