华北克拉通胶东地区粉子山群碎屑锆石SHRIMPU-Pb定年
SHRIMP U-Pb dating of detrital zircons from the Fenzishan Group in eastern Shandong, North China craton
-
摘要: 胶东是华北克拉通重要的变质基底出露区之一。对该区古元古代粉子山群和荆山群中碎屑锆石的年龄分布特征的研究，可以为胶东地区早前寒武纪演化提供重要依据。由于Pb丢失作用，前人仅在粉子山群中获得少量锆石谐和年龄。本文对粉子山群长石石英片岩中碎屑锆石进行了SHRIMP定年。52颗锆石的61个数据点分析，获得36个谐和年龄（不谐和度<10%）。所有具谐和年龄的锆石都具有高的Th/U比值，大多显示明显的岩浆环带，原为岩浆成因。谐和锆石年龄分布在2033~3429Ma之间，主要峰值分别为~2.19Ga和~2.48Ga。该样品中还含有2颗年龄大于3.3Ga的锆石，位于谐和线上的2颗最年轻碎屑锆石的年龄为~2.08Ga。结合前人研究，可得出如下结论：1）粉子山群和荆山群原岩沉积时代可进一步限制在1.9~2.1Ga之间;2）粉子山群与荆山群的碎屑锆石年龄分布形式存在明显区别，指示其源区可能不同;3）胶东地区可能存在古太古代地壳物质。Abstract: An important exposure of Early Precambrian basement rocks in the North China craton is eastern Shandong, where the Paleoproterozoic Fenzishan and Jingshan groups are well preserved. Age histograms of detrital zircons from the Fenzishan and Jingshan groups can provide clues to understand the geological evolution of eastern Shandong. We report SHRIMP U-Pb zircon dating of a feldspar quartz schist from the Fenzishan Group. A total of 61 analyses were taken on 52 zircon grains and 36 analyses gave concordant ages (Discordance3.3Ga). Two youngest, concordant detrital zircons have 207Pb/206Pb ages of ~2.08Ga. Combined with early studies, some conclusions can be drawn as follows. 1) The formation age of the Fenzishan and Jingshan groups can be further limited in between 1.9 and 2.1Ga; 2) the detrital zircon age histogram of the Fenzishan Group is distinct from that of the Jingshan Group, suggesting the differences of their source regions; 3) Paleoarchean crustal material may occur in eastern Shandong.
-
Key words:
- Detrital zircon /
- SHRIMP dating /
- Paleoproterozoic /
- Paleoarchean /
- Fenzishan Group /
- Eastern Shandong
-
-
[1] Black LP, Kamo SL, Allen CM, Aleinikoff JN, Davis DW, Korsch RJ and Foudoulis C. 2003. TEMORA 1: A new zircon standard for Phanerozoic U-Pb geochronology. Chemical Geology, 200(1-2): 155-170
[2] Cawood PA, Hawkesworth CJ and Dhuime B. 2012. Detrital zircon record and tectonic setting. Geology, 40(10): 875-878
[3] Cawood PA, Hawkesworth CJ and Dhuime B. 2013. The continental record and the generation of continental crust. Geological Society of America Bulletin, 125(1-2): 14-32
[4] Dan W, Li XH, Guo JH, Liu Y and Wang XC. 2012. Integrated in situ zircon U-Pb age and Hf-O isotopes for the Helanshan khondalites in North China Craton: Juvenile crustal materials deposited in active or passive continental margin? Precambrian Research, 222-223: 143-158
[5] Dong CY, Wan YS, Xu ZY, Liu DY, Yang ZS, Ma MZ and Xie HQ. 2013. SHRIMP zircon U-Pb dating of Late Paleoproterozoic kondalites in the Daqing Mountains area on the North China Craton. Science China (Earth Sciences), 56(1): 115-125
[6] Hawkesworth CJ and Kemp AIS. 2006a. Evolution of the continental crust. Nature, 443(7113): 811-817
[7] Hawkesworth CJ and Kemp AIS. 2006b. Using hafnium and oxygen isotopes in zircons to unravel the record of crustal evolution. Chemical Geology, 226(3-4): 144-162
[8] Jahn BM, Liu DY, Wan YS, Song B and Wu JS. 2008. Archean crustal evolution of the Jiaodong Peninsula, China, as revealed by zircon SHRIMP geochronology, elemental and Nd-isotope geochemistry. American Journal of Science, 308(3): 232-269
[9] Ji ZY. 1993. New data on isotope age of the Proterozoic metamorphic rocks from northern Jiaodong and its geological significance. Shandong Geology, 9(1): 40-51 (in Chinese with English abstract)
[10] Jin K, Xu WL, Wang QH, Gao S and Liu XC. 2003. Formation time and sources of the Huaiguang "migmatitic granodiorite" in Bengbu, Anhui Provinece: Evidence from SHRIMP zircon U-Pb geochronology. Acta Geoscientia Sinica, 24(4): 331-335 (in Chinese with English abstract)
[11] Liu CH, Zhao GC, Sun M, Wu FY, Yang JH, Yin CQ and Leung WH. 2011. U-Pb and Hf isotopic study of detrital zircons from the Yejishan Group of the Lüliang Complex: Constraints on the timing of collision between the Eastern and Western blocks, North China Craton. Sedimentary Geology, 236(1-2): 129-140
[12] Liu JH, Liu FL, Liu PH, Wang F and Ding ZJ. 2011. Polyphase magmatic and metamorphic events from Early Precambrian metamorphic basement in Jiaobei area: Evidences from the zircon U-Pb dating of TTG and granitic gneisses. Acta Petrologica Sinica, 27(4): 943-960 (in Chinese with English abstract)
[13] Liu JH, Liu FL, Ding ZJ, Liu CH, Yang H, Liu PH, Wang F and Meng E. 2013a. The growth, reworking and metamorphism of Early Precambrian crust in the Jiaobei terrane, the North China Craton: Constraints from U-Th-Pb and Lu-Hf isotopic systematics, and REE concentrations of zircon from Archean granitoid gneisses. Precambrian Research, 224: 287-303
[14] Liu JH, Liu FL, Ding ZJ, Yang H, Liu CH, Liu PH, Xiao LL, Zhao L and Geng JZ. 2013b. U-Pb dating and Hf isotope study of detrital zircons from the Zhifu Group, Jiaobei Terrane, North China Craton: Provenance and implications for Precambrian crustal growth and recycling. Precambrian Research, 235: 230-250
[15] Liu PH, Liu FL, Wang F, Liu JH and Cai J. 2013c. Petrological and geochronological preliminary study of the Xiliu ~2.1Ga meta-gabbro from the Jiaobei terrane, the southern segment of the Jiao-Liao-Ji Belt in the North China Craton. Acta Petrologica Sinica, 29(7): 2371-2390 (in Chinese with English abstract)
[16] Ludwig KR. 2001. Squid 1.02: A User's Manual. Berkeley. Berkeley Geochronology Centre Special Publication, 1-19
[17] Luo Y, Sun M, Zhao GC, Li SZ, Xu P, Ye K and Xia XP. 2004. LA-ICP-MS U-Pb zircon ages of the Liaohe Group in the Eastern Block of the North China Craton: Constraints on the evolution of the Jiao-Liao-Ji Belt. Precambrian Research, 134(3-4): 349-371
[18] Luo Y, Sun M, Zhao GC, Li SZ, Ayers JC, Xia XP and Zhang JH. 2008. A comparison of U-Pb and Hf isotopic compositions of detrital zircons from the North and South Liaohe Groups: Constraints on the evolution of the Jiao-Liao-Ji Belt, North China Craton. Precambrian Research, 163(3-4): 279-306
[19] Nasdala L, Hofmeister W, Norberg N, Martinson JM, Corfu F, Drr W, Kamo SL, Kennedy AK, Kronz A, Reiners PW, Frei D, Kosler J, Wan Y, Gtze J, Hger T, Krner A and Valley JW. 2008. Zircon M257: A homogeneous natural reference material for the ion microprobe U-Pb analysis of zircon. Geostandards and Geoanalytical Research, 32(3): 247-265
[20] Tang J, Zheng YF, Wu YB, Gong B and Liu XM. 2007. Geochronology and geochemistry of metamorphic rocks in the Jiaobei terrane: Constraints on its tectonic affinity in the Sulu orogen. Precambrian Research, 152(1-2): 48-82
[21] Wan YS, Song B, Liu DY, Wilde SA, Wu JS, Shi YR, Yin XY and Zhou HY. 2006. 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(3-4): 249-271
[22] Wan YS, Liu DY, Dong CY, Nutman A, Wilde SA, Wang W, Xie HQ, Yin XY and Zhou HY. 2009. The oldest rocks and zircons in China. Acta Petrologica Sinica, 25(8): 1793-1807 (in Chinese with English abstract)
[23] Wan YS, Liu DY, Dong CY, Liu SJ, Wang SJ and Yang EX. 2011a. U-Th-Pb behavior of zircons under high-grade metamorphic conditions: A case study of zircon dating of meta-diorite near Qixia, eastern Shandong. Geoscience Frontiers, 2(2): 137-146
[24] Wan YS, Liu DY, Wang W, Song TR, Krner A, Dong CY, Zhou HY and Yin XY. 2011b. Provenance of Meso-to Neoproterozoic cover sediments at the Ming Tombs, Beijing, North China Craton: An integrated study of U-Pb dating and Hf isotopic measurement of detrital zircons and whole-rock geochemistry. Gondwana Research, 20(1): 219-242
[25] Wang PC. 1995. Relationships between the Jingshan Group and the Fenzishan Group in the Jiaobei area. Regional Geology of China, 14(1): 1772-1792 (in Chinese with English abstract)
[26] Wang LG, Qiu YM, McNaughton NJ, Groves DI, Luo ZK, Huang JZ, Miao LC and Liu YK. 1998. Constraints on crustal evolution and gold metallogeny in the Northwestern Jiaodong Peninsula, China, from SHRIMP U-Pb zircon studies of granitoids. Ore Geology Reviews, 13(1-5): 275-291
[27] Wang W, Zhai MG, Li TS, Santosh M, Zhao L and Wang HZ. 2014. Archean-Paleoproterozoic crustal evolution in the eastern North China Craton: Zircon U-Th-Pb and Lu-Hf evidence from the Jiaobei terrane. Precambrian Research, 241: 146-160
[28] Williams IS. 1998. U-Th-Pb Geochronology by Ion Microprobe. In: McKibben MA, Shanks WC and Ridley WI (eds.). Applications of Microanalytical Techniques to Understanding Mineralizing Processes. Reviews in Economic Geology, 7: 1-35
[29] Wu ML, Zhao GC, Sun M, Li SZ, Bao ZA, Yuk TP, Eizenhefer PR and He YH. 2014. Zircon U-Pb geochronology and Hf isotopes of major lithologies from the Jiaodong Terrane: Implications for the crustal evolution of the Eastern Block of the North China Craton. Lithos, 190-191: 71-84
[30] Xia XP, Sun M, Zhao GC, Wu FY and Xie LW. 2009. U-Pb and Hf isotopic study of detrital zircons from the Luliang khondalite, North China Craton, and their tectonic implications. Geological Magazine, 146(5): 701-716
[31] Xie HQ, Wan YS, Wang SJ, Liu DY, Xie SW, Liu SJ, Dong CY and Ma MZ. 2013. Geology and zircon dating of trondhjemitic gneiss and amphibolite in the Tangezhuang area, eastern Shandong. Acta Petrologica Sinica, 29(2): 619-629 (in Chinese with English abstract)
[32] Xie SW, Wu YB, Zhang ZM, Qin YC, Liu XC, Wang H, Qin ZW, Liu Q and Yang SH. 2012. U-Pb ages and trace elements of detrital zircons from Early Cretaceous sedimentary rocks in the Jiaolai Basin, north margin of the Sulu UHP terrane: Provenances and tectonic implications. Lithos, 154: 346-360
[33] Xie SW, Xie HQ, Wang SJ, Krner A, Liu SJ, Zhou HY, Ma MZ, Dong CY, Liu, DY, Wan YS. 2015. Ca. 2.9Ga magmatism in eastern Shandong, North China Craton: Zircon U-Pb dating and Hf isotopic analysis and whole-rock geochemistry. Precambrian Research, in press
[34] Yang JH, Wu FY, Shao JA, Wilde SA, Xie LW and Liu XM. 2006. Constraints on the timing of uplift of the Yanshan Fold and Thrust Belt, North China. Earth and Planetary Science Letters, 246(3-4): 336-352
[35] Zhou JB, Wilde SA, Zhao GC, Zheng CQ, Jin W, Zhang XZ and Cheng H. 2008. SHRIMP U-Pb zircon dating of the Neoproterozoic Penglai Group and Archean gneisses from the Jiaobei Terrane, North China, and their tectonic implications. Precambrian Research, 160(3-4): 323-340
[36] Zheng JP, Griffin WL, O'Reilly SY, Lu FX, Wang CY, Zhang M, Wang FZ and Li HM. 2004. 3.6Ga lower crust in central China: New evidence on the assembly of the North China craton. Geology, 32(3): 229-232
[37] Zheng JP, Griffin WL, O'Reilly SY, Hu BQ, Zhang M, Tang HY, Su YP, Zhang ZH, Pearson N, Wang FZ and Lu FX. 2008. Continental collision and accretion recorded in the deep lithosphere of central China. Earth and Planetary Science Letters, 269(3-4): 497-507
[38] 纪壮义. 1993. 胶北元古界变质岩的同位素测年新成果及其地质意义. 山东地质, 9(1): 40-51
[39] 靳克, 许文良, 王清海, 高山, 刘晓春. 2003. 蚌埠淮光"混合花岗闪长岩"的形成时代及源区: 锆石SHRIMP U-Pb地质年代学证据. 地球学报, 24(4): 331-335
[40] 刘建辉, 刘福来, 刘平华, 王舫, 丁正江. 2011. 胶北早前寒武纪变质基底多期岩浆-变质热事件: 来自TTG片麻岩和花岗质片麻岩中锆石U-Pb定年的证据. 岩石学报, 27(4): 943-960
[41] 刘平华, 刘福来, 王舫, 刘建辉, 蔡佳. 2013. 胶北西留古元古代~2.1Ga变辉长岩岩石学与年代学初步研究. 岩石学报, 29(7): 2371-2390
[42] 万渝生, 刘敦一, 董春艳, Nutman A, Wilde SA, 王伟, 颉颃强, 殷小艳, 周红英. 2009. 中国最老岩石和锆石. 岩石学报, 25(8): 1793-1807
[43] 王沛成. 1995. 论胶北地区荆山群与粉子山群之关系. 中国区域地质, 14(1): 1772-1792
[44] 颉颃强, 万渝生, 王世进, 刘敦一, 谢士稳, 刘守偈, 董春艳, 马铭株. 2013. 胶东谭格庄地区奥长花岗质片麻岩和斜长角闪岩的野外地质和锆石SHRIMP定年. 岩石学报, 29(2): 619-629
-
计量
- 文章访问数: 8222
- PDF下载数: 6150
- 施引文献: 0
下载: