黑龙江跃进山杂岩中砾岩的碎屑锆石年代学及其大地构造意义
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摘要
黑龙江省饶河县石场一带分布的跃进山杂岩为一套富含晚三叠世化石的海陆交互相沉积地层.砾岩样品中的LA-ICPMS锆石U-Pb测年结果显示,样品中的碎屑锆石年龄谱具有4组年龄,分别为800 Ma以上、500 Ma、251～284 Ma和219～222 Ma.前三者与佳木斯地块中的热事件年龄完全一致,表明其沉积物源主要来自佳木斯地块;后者为砾岩最小年龄组,大致可将这组最小年龄视为这套砾岩的沉积时代下限,与西侧松辽地块东缘的张广才岭地区广泛分布的210～228 Ma的晚三叠世早期花岗岩基本一致,说明具有最小年龄组的碎屑锆石可能来自松辽地块东部.碎屑锆石年龄及其源区特征表明,在晚三叠世之前,跃进山增生杂岩已经就位在佳木斯地块东缘,并成为佳木斯地块东部大陆边缘的一部分.
The Yuejinshan Complex developed in Shichang area of Raohe County,Heilongjiang Province,is a set of marine-terrigenous sedimentary strata with rich Late Triassic fossils. The LA-ICP-MS zircon U-Pb dating results of conglomerate samples yield four groups of age,namely,above 800 Ma,500 Ma,251-284 Ma and 219-222 Ma respectively. The former three are completely in accordance with the ages of thermal events in Jiamusi massif,reflecting the sediment source mainly from Jiamusi massif. The latter,the youngest age group,can be roughly regarded as the latest sedimentary age of conglomerate. It is basically consistent with the early Late Triassic granite(210-228 Ma)widely distributed in Zhangguangcailing area of the east margin of Songliao massif,which indicates that the youngest detrital zircons are probably from the eastern Songliao massif. The characteristics of detrital zircon ages and source area reveal that the Yuejinshan accretionary complex has been located on and become a part of the east continental margin of Jiamusi massif before Late Triassic.
The Yuejinshan Complex developed in Shichang area of Raohe County,Heilongjiang Province,is a set of marine-terrigenous sedimentary strata with rich Late Triassic fossils. The LA-ICP-MS zircon U-Pb dating results of conglomerate samples yield four groups of age,namely,above 800 Ma,500 Ma,251-284 Ma and 219-222 Ma respectively. The former three are completely in accordance with the ages of thermal events in Jiamusi massif,reflecting the sediment source mainly from Jiamusi massif. The latter,the youngest age group,can be roughly regarded as the latest sedimentary age of conglomerate. It is basically consistent with the early Late Triassic granite(210-228 Ma)widely distributed in Zhangguangcailing area of the east margin of Songliao massif,which indicates that the youngest detrital zircons are probably from the eastern Songliao massif. The characteristics of detrital zircon ages and source area reveal that the Yuejinshan accretionary complex has been located on and become a part of the east continental margin of Jiamusi massif before Late Triassic.
引文
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[30]毕君辉,葛文春,张彦龙,等.佳木斯地块东部二叠纪锦山花岗杂岩体的成因及其地质意义[J].地球科学与环境学报,2014,36(4):16-31.
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[32]Wu F Y,Sun D Y,Li H M,et al.A-type granites in northeastern China:Age and geochemical constraints on their petrogenesis[J].Chemical Geology,2002,187(1):143-173.
[33]孙德有,吴福元,高山,等.吉林中部晚三叠世和早侏罗世两期铝质A型花岗岩的厘定及对吉黑东部构造格局的制约[J].地学前缘,2005,12(2):263-275.
[34]Wang F,Xu W L,Xu Y G,et al.Late Triassic bimodal igneous rocks in eastern Heilongjiang Province,NE China:Implications for the initiation of subduction of the Paleo-Pacific Plate beneath Eurasia[J].Journal of Asian Earth Sciences,2015,97:406-423.
[35]曾振.佳木斯地块与完达山杂岩的构造性质及其演化[D].长春:吉林大学,2017.
[36]耿雯,秦江锋,李永飞,等.黑龙江张广才岭一面坡晚三叠世花岗岩地球化学特征和LA-ICP-MS锆石U-Pb年龄[J].地质通报,2014,33(9):1333-1341.
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[38]崔维龙.佳木斯地块东缘二叠纪俯冲洋壳的发现及意义[D].长春:吉林大学,2018.
[2]Zhou J B,Wilde S A,Zhang X Z,et al.The onset of Pacific margin accretion in NE China:Evidence from the Heilongjiang highpressure metamorphic belt[J].Tectonophysics,2009,478(3/4):230-246.
[3]Zhang X Z,Guo Y,Zhou J B,et al.Late Paleozoic-Early Mesozoic tectonic evolution in the east margin of the Jiamusi massif,eastern Northeastern China[J].Russian Journal of Pacific Geology,2015,9(1):1-10.
[4]李双林,欧阳自远.兴蒙造山带及邻区的构造格局与构造演化[J].海洋地质与第四纪地质,1998,1(3):45-54.
[5]唐克东,王莹,何国琦,等.中国东北及邻区大陆边缘构造[J].地质学报,1995,69(1):16-30.
[6]Kojima S,Mizutani S.Triassic and Jurassic radiolarian from the nadanhada range,Northeast China[J].Trans Proc Palaeont Soc Japan N S,1987,148:256-275.
[7]Mizutani S,Kojima S.Mesozoic radiolarian biostratigraphy of Japan and collage tectonics along the eastern continental margin of Asia[J].Palaeogeography,Palaeoclimatology,Palaeoecology,1992,96(1/2):3-22.
[8]黑龙江省地质矿产局.黑龙江省地质志[M].北京:地质出版社,1993:1-734.
[9]张魁武,邵济安.黑龙江省东部跃进山群中绿片岩的地球化学特征及地质意义[J].岩石学报,1997,13(2):168-172.
[10]康宝祥,张海.那丹哈达岭饶河蛇绿岩及其地质意义[J].黑龙江地质,1990,1(1):3-18.
[11]张旗.蛇绿岩研究中的几个问题[J].岩石学报,1995,11(S1):228-240.
[12]Bi J H,Ge W C,Yang H,et al.Geochronology,geochemistry and zircon Hf isotopes of the Dongfanghong gabbroic complex at the eastern margin of the Jiamusi Massif,NE China:Petrogensis and tectonic implication[J].Lithos,2015,234/235:27-46.
[13]Sun M D,Xu Y G,Wilde S A,et al.The Permian Dongfanghong island-arc gabbro of the Wandashan orogen,NE China:Implications for Paleo-Pacific subduction[J].Tectonophysics,2015,659:122-136.
[14]杨金中,邱海峻,孙加鹏,等.跃进山岩系及其构造意义[J].长春科技大学学报,1998,28(4):380-385.
[15]张旗,周国庆.中国蛇绿岩[M].北京:科学出版社,2001:1-182.
[16]曲关生.黑龙江省岩石地层[M].武汉:中国地质大学出版社,1997:1-298.
[17]袁洪林,吴福元,高山,等.东北地区新生代侵入体的锆石激光探针U-Pb年龄测定与稀土元素成分分析[J].科学通报,2003,48(14):1511-1520.
[18]吴元保,郑永飞.锆石成因矿物学研究及其对U-Pb年龄解释的制约[J].科学通报,2004,49(16):589-1604.
[19]蒲建彬.佳木斯地块东缘上三叠统与二叠纪花岗岩角度不整合的构造意义[D].长春:吉林大学,2016.
[20]Wilde S A,Zhang X Z,Wu F Y.Extension of a newly-identified500 Ma metamorphic terrain in northeast China:Further U-Pb SHRIMPdating of the Mashan Complex,Heilongjiang province,China[J].Tectonophysics,2000,328(1-2):115-130.
[21]Wilde S A,Wu F Y,Zhang X Z.Late Pan-African magmatism in Northeastern China:SHRIMP U-Pb zircon evidence for igneous ages from the Mashan Complex[J].Precambrian Research,2003,122(1):311-327.
[22]Zhou J B,Wilde S A,Zhao G C,et al.New SHRIMP U-Pb Zircon ages from the Heilongjiang Complex in NE China:Constraints on the Mesozoic evolution of NE China[J].American Journal of Science,2010,310:1024-1053.
[23]Zhou J B,Wilde S A,Zhao G C,et al.Pan-African metamorphic and magmatic rocks of the Khanka Massif,NE China:Further evidence regarding their affinity[J].Geological Magazine,2010,147(5):737-749.
[24]Zhou J B,Wilde S A,Zhang X Z,et al.A>1300 km Late PanAfrican metamorphic belt in NE China:New evidence from the Xing’an Block and its tectonic implications[J].Tectonophysics,2011,509(3/4):280-292.
[25]Wilde S A,吴福元,张兴洲.中国东北麻山杂岩晚泛非期变质的锆石SHRIMP年龄证据及全球大陆再造意义[J].地球化学,2001,30(1):35-50.
[26]宋彪,李锦轶,牛宝贵,等.黑龙江省东部麻山群黑云斜长片麻岩中锆石的年龄及其地质意义[J].地球学报,1997,18(3):306-312.
[27]吴福元,Wilde S A,孙德有.佳木斯地块片麻状花岗岩的锆石离子探针U-Pb年龄[J].岩石学报,2001,17(3):443-452.
[28]温泉波,刘永江,李伟民,等.佳木斯地块花岗质片麻岩的独居石年龄及其地质意义[J].吉林大学学报:地球科学版,2008,38(2):187-193.
[29]黄映聪,任东辉,张兴洲,等.黑龙江省东部桦南隆起美作花岗岩的锆石U-Pb定年及其地质意义[J].吉林大学学报:地球科学版,2008,38(4):631-638.
[30]毕君辉,葛文春,张彦龙,等.佳木斯地块东部二叠纪锦山花岗杂岩体的成因及其地质意义[J].地球科学与环境学报,2014,36(4):16-31.
[31]孟恩,许文良,杨德彬,等.佳木斯地块东缘及东南缘二叠纪火山作用:锆石U-Pb年代学,地球化学及其构造意义[J].科学通报,2008,53(8):956-965.
[32]Wu F Y,Sun D Y,Li H M,et al.A-type granites in northeastern China:Age and geochemical constraints on their petrogenesis[J].Chemical Geology,2002,187(1):143-173.
[33]孙德有,吴福元,高山,等.吉林中部晚三叠世和早侏罗世两期铝质A型花岗岩的厘定及对吉黑东部构造格局的制约[J].地学前缘,2005,12(2):263-275.
[34]Wang F,Xu W L,Xu Y G,et al.Late Triassic bimodal igneous rocks in eastern Heilongjiang Province,NE China:Implications for the initiation of subduction of the Paleo-Pacific Plate beneath Eurasia[J].Journal of Asian Earth Sciences,2015,97:406-423.
[35]曾振.佳木斯地块与完达山杂岩的构造性质及其演化[D].长春:吉林大学,2017.
[36]耿雯,秦江锋,李永飞,等.黑龙江张广才岭一面坡晚三叠世花岗岩地球化学特征和LA-ICP-MS锆石U-Pb年龄[J].地质通报,2014,33(9):1333-1341.
[37]耿雯.张广才岭南段尚志地区花岗岩类成因及其地质意义[D].西安:西北大学,2015.
[38]崔维龙.佳木斯地块东缘二叠纪俯冲洋壳的发现及意义[D].长春:吉林大学,2018.