Citation: | GUO Jian'gang, ZHANG Yujin, ZHANG Chao, LI Wei, WANG Yan, WANG Qingzhao, GUO Jia. Formation age and geochemical characteristics of volcanic rocks in Manketou'ebo Formation in Kundu area of Ar Horqin Banner, Inner Mongolia[J]. Geological Bulletin of China, 2018, 37(9): 1652-1661. |
Volcanic rocks of Late Jurassic Manketou'ebo Formation in Kundu area of Inner Mongolia are mainly composed of a series of acid lava and volcaniclastic rocks. The LA-ICP-MS zircon U-Pb age is 157.7±1.2Ma (MSWD=0.39, n=26), which indicates its eruption in the late Late Jurassic. The geochemical analysis shows that these tuffs are peraluminous alkaline volcanic rocks with high Si, Al, low Ca, Mg, with the REE pattern gently inclined to the right and exhibiting negative Eu anomaly. The characteristics of trace elements suggest that the volcanic rocks are enriched in LILE (such as Rb and K) and HFSE (such as Th and U), and depleted in HFSE such as Nb and Ti, which implies that the source rocks are of crust genetic type. The zircons of the tuffs have εHf(t) values ranging from+2.6 to+8.6, with two-age Hf model age being 590~925Ma, which suggests that the magma for these volcanic rocks was derived from the newly accreted Early Paleozoic-Neoproterozoic juvenile crustal materials. The tuffs of Manketou'ebo Formation possess the characteristics of A2-type granites, indicating that they were formed in a post-orogenic extensional environment, which was possibly related to the lithosphere extension after the closure of the Mongol-Okhotsk Ocean.
[1] | Zhang J H, Gao S, Ge W C, et al.Geochronology of the Mesozoic volcanic rocks in the Great Xing'an Range, northeastern China:implications for subductiion-induced delamination[J]. Chemical Geology, 2010, 276:144-165. doi: 10.1016/j.chemgeo.2010.05.013 |
[2] | Zhang J H, Ge W C, Wu F Y, et al. Mesozoic bimodal volcanic suite in Zhalantun of the Da Hinggan Range and its geological significance:zircon U-Pb age and Hf isotopic constraints[J]. Acta Geologic Sinica, 2006, 80:801-812. |
[3] | 尹志刚, 赵海滨, 赵寒冬, 等.大兴安岭北端塔木兰沟组玄武质岩石的地球化学特征及构造背景[J].地质通报, 2005, 24(9):848-853. doi: 10.3969/j.issn.1671-2552.2005.09.011 |
[4] | 张玉涛, 张连昌, 周新华, 等.大兴安岭北段牙克石地区玄武质火山岩的元素、同位素地球化学特征及其地质意义[J].地质通报, 2008, 27(1):112-120. doi: 10.3969/j.issn.1671-2552.2008.01.010 |
[5] | 周新华, 英基丰, 张连昌, 等.大兴安岭晚中生代火山岩成因与古老地块物质贡献:锆石U-Pb年龄及多元同位素制约[J].地球科学(中国地质大学学报), 2009, 34(1):1-10. |
[6] | 孟恩, 许文良, 杨德彬, 等.满洲里地区灵泉盆地中生代火山岩的锆石U-Pb年代学、地球化学及其地质意义[J].岩石学报, 2011, 27(4):1209-1226. |
[7] | 苟军, 孙德有, 赵忠华, 等.满洲里南部白音高老组流纹岩锆石U-Pb定年及岩石成因[J].岩石学报, 2010, 26(1):333-344. |
[8] | 谭皓元, 和钟铧, 陈飞, 等.大兴安岭中段索伦地区白音高老组火山岩锆石U-Pb年龄、地球化学特征及构造意义[J].地质通报, 2017, 36(5):893-908. doi: 10.3969/j.issn.1671-2552.2017.05.021 |
[9] | 葛文春, 林强, 孙德有, 等.大兴安岭中生代两类流纹岩成因的地球化学研究[J].地球科学, 2000, 25(2):172-178. |
[10] | 葛文春, 李献华, 林强, 等.呼伦湖早白垩世碱性流纹岩的地球化学特征及其意义[J].地质科学, 2001, 36(2):176-183. doi: 10.3321/j.issn:0563-5020.2001.02.005 |
[11] | 陈志广, 张连昌, 周新华, 等.满洲里新右旗火山岩剖面年代学和地球化学特征[J].岩石学报, 2006, 22(12):2971-2986. |
[12] | Wang Fei, Zhou X H, Zhang L C, et al. Late Mesozoic volcanism in the Great Xing'an Range (NE China):timing and implication for the dynamic seting of NE Asia[J]. Earth and Planetary Science Leters, 2006, 251:179-198. doi: 10.1016/j.epsl.2006.09.007 |
[13] | 赵忠华, 孙德有, 苟军, 等.满洲里南部塔木兰沟组火山岩年代学与地球化学[J].吉林大学学报:地球科学版, 2011, 41(6):1865-1880. |
[14] | 张超, 杨伟红, 和钟铧, 等.大兴安岭中南段巴升河地区满克头鄂博组流纹岩年代学和地球化学研究[J].世界地质, 2014, 33(2):255-265. doi: 10.3969/j.issn.1004-5589.2014.02.002 |
[15] | 林强, 葛文春, 孙德有, 等.中国东北地区中生代火山岩的大地构造意义[J].地质科学, 1998, 33(2):129-139. |
[16] | 张渝金, 吴新伟, 张超, 等.黑龙江龙江盆地中侏罗世万宝组时代确定新证据及其地质意义[J].地学前缘, 2018, 25(1):182-196. |
[17] | 张渝金, 张超, 郭威, 等.内蒙古阿鲁科尔沁旗林西组植物化石新材料[J].地质与资源, 2017, 26(4):333-338. doi: 10.3969/j.issn.1671-1947.2017.04.001 |
[18] | Ludwig K R. ISOPLOT 3. 00: A Geochronological Toolkit for Microsoft Excel[M]. Berkeley: Berkeley Geochronology Center, 2003. |
[19] | 李长民.锆石成因矿物学与锆石微区定年综述[J].地质调查与研究, 2009, 33(3):161-174. doi: 10.3969/j.issn.1672-4135.2009.03.001 |
[20] | 邱欣卫, 刘池洋, 毛光周, 等.鄂尔多斯盆地延长组火山灰沉积物岩石地球化学特征[J].地球科学(中国地质大学学报), 2011, 36(1):139-150. |
[21] | 单强, 牛贺才, 于学元, 等.新疆北部阿尔泰南缘晚古生代高钾高硅熔结凝灰岩的地球化学、岩浆成因及构造背景[J].岩石学报, 2007, 23(7):1721-1729. doi: 10.3969/j.issn.1000-0569.2007.07.017 |
[22] | 田和明, 代世峰, 李大华, 等.重庆南川晚二叠世凝灰岩的元素地球化学特征[J].地质论评, 2014, 60(1):169-177. |
[23] | 陈海燕, 张运强, 张计东, 等.冀北承德盆地侏罗系九龙山组凝灰岩LA-ICP-MS锆石U-Pb年龄与地球化学特征[J].地质通报, 2014, 33(7):966-973. doi: 10.3969/j.issn.1671-2552.2014.07.004 |
[24] | Middlmost E A K. Naming materials in the magma/igneous rock system[J]. Earth-Science Reviews, 1994, 37:215-224. |
[25] | 邓晋福, 罗兆华, 苏尚国, 等.岩石成因、构造环境与成矿作用[M].北京:地质出版社, 2004. |
[26] | Irvine T N, Baragar W R A. A guide to the chemical classification of the common volcanic rocks[J]. Canada Joural of Earth Science, 1971, 8(5):523-548. doi: 10.1139/e71-055 |
[27] | Sun S S, McDonough W F. Chemical and isotopic systematics of oceanic basalts: Implications formantle comp osition and processes[C]//Sauders A D, Norry M J. Magmatism in the Ocean Basins. Geological Society of London, Special Publications, 1989, 42: 313-345. |
[28] | Wu F Y, Yang Y H, Xie L W, et al. Hf isotopic compositions of the standard zircons and baddeleyites used in U-Pb geochronology[J]. Chemical Geology, 2006, 234:105-126. doi: 10.1016/j.chemgeo.2006.05.003 |
[29] | Griffin W L, Wang X, Jackson S E, et al. Zircon geochemistry and magma mixing, SE China:In-situ analysis of Hf isotopes, Tonglu and Pingtan igneous conplexes[J]. Lithos, 2002, 61:237-269. |
[30] | 曹花花.珲春地区晚海西期辉长岩-闪长岩的形成时代和地球化学[D].吉林大学硕士学位论文, 2010. |
[31] | 孙德有, 苟军, 任云生, 等.满洲里南部玛尼吐组火山岩锆石U-Pb年龄与地球化学研究[J].岩石学报, 2011, 27(10):3083-3094. |
[32] | 李鹏川, 李世超, 刘正宏, 等.内蒙古林西地区满克头鄂博组火山岩形成时代及构造环境[J].世界地质, 2016, 1:77-88. doi: 10.3969/j.issn.1004-5589.2016.01.008 |
[33] | 赵国龙, 杨桂林, 王忠.大兴安岭中南部中生代火山岩[M].北京:北京科学技术出版社, 1989. |
[34] | 孙德有, 许文良, 周燕.大兴安岭中生代火山岩的形成机制[J].矿物岩石地球化学通讯, 1994, 3:162-164. |
[35] | Zhang J H, Ge W C, Wu F Y, et al. Large-scale Early Cretaceous volcanic events in the northern Great Xing'an Range, Northeastern China[J]. Lithos, 2008, 102:138-157. doi: 10.1016/j.lithos.2007.08.011 |
[36] | 林强, 葛文春, 曹林, 等.大兴安岭中生代双峰式火山岩的地球化学特征[J].地球化学, 2003, 32(3):208-222. doi: 10.3321/j.issn:0379-1726.2003.03.002 |
[37] | Fan W M, Guo F, Wang Y J, et al. Late Mesozoic calc-alkaline volcanism of post-orogenic extension in the northern Da Hinggan Mountains, northeastern China[J]. Journal of Volcanology and Geothermal Research, 2003, 121:115-135. doi: 10.1016/S0377-0273(02)00415-8 |
[38] | Metelkin D V, Vernikovsky V A, Kazansky A Y, et al. Late Mesozoic tectonics of Central Asia based on paleomagnetic evidence[J]. Gondwana Research, 2010, 18(2/3):400-419. |
[39] | Wang P J, Chen F K, Shen S M, et al. Geochemical and Nd-Sr-Pb isotopic composition of Mesozoic volcanic rocks in the Songliao basin, NE China[J]. Geochemical Journal, 2006, 40:149-159. doi: 10.2343/geochemj.40.149 |
[40] | 张玉涛, 张连昌, 英基丰, 等.大兴安岭北段塔河地区早白垩世火山岩地球化学及源区特征[J].岩石学报, 2007, 23(11):2811-2822. doi: 10.3969/j.issn.1000-0569.2007.11.012 |
[41] | 高龙飞, 和钟铧, 隋振民, 等.大兴安岭中段索伦地区满克头鄂博组火山岩年龄、地球化学特征及其构造环境[J].地质通报, 2018, 37(5):881-894. |
[42] | Ying J F, Zhou X H, Zhang L C, et al. Geochronological framework of Mesozoic volcanic rocks in the Great Xing'an Range, NE China, and their geodynamic implications[J]. Journal of Asian Earth Sciences, 2010, 39(6):786-793. doi: 10.1016/j.jseaes.2010.04.035 |
[43] | 张连昌, 陈志广, 周新华, 等.大兴安岭根河地区早白垩世火山岩深部源区与构造-岩浆演化:Sr-Nd-Pb-Hf同位素地球化学制约[J].岩石学报, 2007, 23(11):2823-2835. doi: 10.3969/j.issn.1000-0569.2007.11.013 |
[44] | Maruyama S, Send T. Orogeny and relative plate motions:Example of the Japanese Islands[J]. Tectonophysics, 1986, 127(3/4):305-329. |
[45] | Kimura G, Takahashi M and Kono M. Mesozoic collision-extrusion tectonics in eastern Asia[J]. Tectonophysics, 1990, 181(1/4):15-23. |
[46] | 邵济安, 唐克东, 何国琦, 等.中国东北地体与东北亚大陆边缘演化[M].北京:地震出版社, 1995:1-250. |
[47] | 李锦轶, 莫申国, 和政军, 等.大兴安岭北段地壳左行走滑运动的时代及其对中国东北邻区中生代以来地壳构造演化重建的制约[J].地学前缘, 2004, 11(3):157-167. doi: 10.3321/j.issn:1005-2321.2004.03.017 |
[48] | Zorin Y A, Belichenko V G, Turutanov E K. The East Siberia transects[J]. Interna GeolReview, 1995, 37:154-175. |
[49] | Zorin Y A. Geodynamics of the western part of the Mongolia-Ok-hotsk collisional beh, Trans-Baikal region (Russia) and Mongolia[J]. Tectonophysics, 1999, 306:33-56. doi: 10.1016/S0040-1951(99)00042-6 |
[50] | 许文良, 王枫, 裴福萍, 等.中国东北中生代构造体制与区域成矿背景:来自中生代火山岩组合时空变化的制约[J].岩石学报, 2013, 29(2):339-353. |
[51] | 莫申国, 韩美莲, 李锦铁, 等.蒙古-鄂霍茨克造山带的组成及造山过程[J].山东科技大学学报:自然科学版, 2006, 24(3):50-52. |
[52] | 张允平.东北亚地区晚侏-白垩纪构造格架主体特点[J].吉林大学学报:地球科学版, 2011, 41(5):1267-1284. |
[53] | 张旗, 冉皞, 李承东. A型花岗岩的实质是什么?[J].岩石矿物学杂志, 2012, 31(4):621-626. doi: 10.3969/j.issn.1000-6524.2012.04.014 |
[54] | Whalen J B, Currie K L, Chappell B W. A-type granites:geochemical characteristics, discrimination and petrogenesis[J]. Contributions to Mineralogy and Petrology, 1987, 95(4):407-419. |
[55] | Eby G N. The A-type granitoids:A review of their occurrence and chemical characteristics and speculations on their petrogenesis[J]. Lithos, 1990, 26(1/2):115-134. |
[56] | 张超, 吴新伟, 张渝金, 等.大兴安岭北段龙江盆地光滑组碱流岩LA-ICP-MS锆石U-Pb年龄及其地质意义[J].地质通报, 2017, 36(9):1531-1541. doi: 10.3969/j.issn.1671-2552.2017.09.005 |
Tectonic location map (a) and simplified geological map (b) of the study area
Macrophotographs(a, b) and microphotographs(c, d) of the tuffs of Late Jurassic Manketou'ebo Formation
Cathodoluminescence images of selected zircons from sample 2016TW03
Zircon U-Pb concordia diagrams for the tuff sample (2016TW03)
TAS(a)and AR-SiO2(b) diagrams for the tuffs of Manketou'ebo Formation
Chondrite-nomalized REE (a) and primitive mantle-normalized trace-element (b) patterns for the tuffs of Manketou'ebo Formation
t-εHf(t) diagram for the tuffs of Manketou'ebo Formation
A-type granite discrimination diagrams
Nb-Y-Ce (a) and Y/Nb-Rb/Nb (b) diagrams for the tuffs of Manketou'ebo Formation