基于重力数据特征的东北地区深部动力机制解析
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摘要
中国东北地区处于古亚洲构造域、蒙古—鄂霍茨克构造域和环太平洋构造域叠加作用最为显著的地区,是地学研究的热点区域.为了探析欧亚大陆下西太平洋板片的俯冲形态以及揭示该区域深部地球动力学机制,利用卫星重力数据通过预处理共轭梯度快速密度反演算法获得了包含东北地区、华北部分地区及日本海海域在内的研究区域上地幔三维密度结构,结合天然地震三维层析成像结果共同揭示太平洋板片的俯冲形态和深部动力机制.俯冲的太平洋板片在日本海沟处呈高密度异常,向西横向持续扩张,深度方向上有逐渐增加趋势.不连续的高密度体俯冲至地幔转换带(410～660km)后继续水平西向俯冲,部分滞留板片可能进入下地幔;在大兴安岭断裂带下面转换带中同样发现水平分布的高密度体,推断是大兴安岭断裂带下方地幔岩石圈拆沉的结果,横向不均匀分布的俯冲板片边缘已抵至大兴安岭造山带附近,这对于研究东北地区深部动力学机制具有重要的意义.
Northeast China is the most prominent region of structural superposition in the PaleoAsian ocean,Mongol-Okhotsk Ocean and Pacific ocean tectonic domains,and has long been a focused area for geoscience research.In order to study the shape of the subduction slab of the West Pacific plate beneath the Eurasian continent and to reveal the deep geodynamics of the region,three-dimensional density distribution of upper mantle is obtained by using a fast preconditionedconjugated gradient density inversion algorithm to process satellite gravity data over Northeast China,part of North China and the sea of Japan.Combined with the three-dimensional velocity structure from seismic data,this density structure permits to reveal the shape of the subduction slab and deep dynamics of the Pacific plate.The results show that the Pacific subduction slab exhibits high density anomalies at the Japan trench,moves westward with continuous expansion and a gradual increasing trend in the depth direction.The high-density body subducting to the mantle transition zone(410～660 km)continues to move westward horizontally,and the stagnant slab partly may have penetrated into the lower mantle.Also we found high density in the transition zone below the Da Hinggan Mountains fault zone which is presumably the result of lithosphere detachment of mantle beneath thisDa Hinggan Mountains fault zone.The edge of the subduction slab that is laterally unevenly distributed has arrived near the DaHinggan Mountainsorogenic belt.These are of great significance for studying the deep dynamic mechanism in Northeast China.
Northeast China is the most prominent region of structural superposition in the PaleoAsian ocean,Mongol-Okhotsk Ocean and Pacific ocean tectonic domains,and has long been a focused area for geoscience research.In order to study the shape of the subduction slab of the West Pacific plate beneath the Eurasian continent and to reveal the deep geodynamics of the region,three-dimensional density distribution of upper mantle is obtained by using a fast preconditionedconjugated gradient density inversion algorithm to process satellite gravity data over Northeast China,part of North China and the sea of Japan.Combined with the three-dimensional velocity structure from seismic data,this density structure permits to reveal the shape of the subduction slab and deep dynamics of the Pacific plate.The results show that the Pacific subduction slab exhibits high density anomalies at the Japan trench,moves westward with continuous expansion and a gradual increasing trend in the depth direction.The high-density body subducting to the mantle transition zone(410～660 km)continues to move westward horizontally,and the stagnant slab partly may have penetrated into the lower mantle.Also we found high density in the transition zone below the Da Hinggan Mountains fault zone which is presumably the result of lithosphere detachment of mantle beneath thisDa Hinggan Mountains fault zone.The edge of the subduction slab that is laterally unevenly distributed has arrived near the DaHinggan Mountainsorogenic belt.These are of great significance for studying the deep dynamic mechanism in Northeast China.
引文
Bai Z M,Zhang S F,Braitenberg C.2013.Crustal density structure from 3Dgravity modeling beneath Himalaya and Lhasa blocks,Tibet.Journal of Asian Earth Sciences,78:301-317.
Blakely R.J.1995.Potential Theory in Gravity and Magnetic Applications.Cambridge:Cambridge University Press.
Braitenberg C,Wienecke S,&Wang Y.2006.Basement structures from satellite-derived gravity field:south china sea ridge.Journal of Geophysical Research Solid Earth,111(B5),B05407,doi:10.1029/2005JB003938.
Chen C X,Zhao D P,Tian Y,et al.2017.Mantle transition zone,stagnant slab and intraplate volcanism in northeast Asia.Geophysical Journal International,209(1):68-85.
Chen L.2010.Concordant structural variations from the surface to the base of the upper mantle in the north china craton and its tectonic implications.Lithos,120(1-2):96-115.
Du X J,Meng L S,Zhang M R.2009.Research on fault distribution and tectonic divisions in Northeast China in terms of gravity field.Journal of Earh Sciences and Environment(in Chinese),31(2):200-206.
Goes S,Lee S V D.2002.Thermal structure of the North American uppermost mantle inferred from seismic tomography.Journal of Geophysical Research:Solid Earth,107(B3):ETG 2-1-ETG 2-13.
Guo Z,Chen Y J,Ning J Y,et al.2015.High resolution 3-Dcrustal structure beneath NE China from joint inversion of ambient noise and receiver functions using NECESSArray data.Earth and Planetary Science Letters,416:1-11.
Guo Z,Chen Y J,Ning J Y,et al.2016.Seismic evidence of ongoing sublithosphere upper mantle convection for intra-plate volcanism in Northeast China.Earth and Planetary Science Letters,433:31-43.
He R Z,Gao R,Zheng H W,et al.2007.Matched-filter analysis of aeromagnetic anomaly in mid-western Tibetan Plateau and its tectonic implications.Chinese Journal of Geophysics(in Chinese),50(4):1131-1140.
Huang J L,Zhao D P.2006.High-resolution mantle tomography of China and surrounding regions.Journal of Geophysical Research:Solid Earth,111(B9):4813-4825,doi:10.1029/2005JB004066.
Kaban M K,Mooney W D,Petrunin A G.2015.Cratonic root beneath North America shifted by basal drag from the convecting mantle.Nature Geoscience,8(10):797-800.
Kaban M K,Stolk W,Tesauro M,et al.2016.3Ddensity model of the upper mantle of Asia based on inversion of gravity and seismic tomography data.Geochemistry,Geophysics,Geosystems,17(11):4457-4477.
Kelty T K,Yin A,Dash B,et al.2008.Detrital-zircon geochronology of Paleozoic sedimentary rocks in the Hangay-Hentey basin,northcentral Mongolia:Implications for the tectonic evolution of the Mongol-Okhotsk Ocean in central Asia.Tectonophysics,451(1-4):290-311.
Koppers A A P,Morgan J P,Morgan J W,et al.2001.Testing the fixed hotspot hypothesis using 40 Ar/39 Ar age progressions along seamount trails.Earth and Planetary Science Letters,185(3-4):237-252.
Koppers A A P,Staudigel H,Duncan R A.2003.High-resolution40 Ar/39 Ar dating of the oldest oceanic basement basalts in the western Pacific basin.Geochemistry,Geophysics,Geosystems,4(11):8914,doi:10.1029/2003GC000574.
Lei J S,Zhao D P.2005.P-wave tomography and origin of the Changbai intraplate volcano in Northeast Asia.Tectonophysics,397(3-4):281-295.
Li X,Chouteau M.1998.Three-dimensional gravity modeling in all space.Surveys in Geophysics,19(4):339-368.
Li Y G,Oldenburg D W.2000.Joint inversion of surface and threecomponent borehole magnetic data.Geophysics,65(2):540-552.
Liu Z,Niu F L,Chen Y J,et al.2015.Receiver function images of the mantle transition zone beneath NE China:New constraints on intraplate volcanism,deep subduction and their potential link.Earth and Planetary Science Letters,412:101-111.
Ma J C,Tian Y,Liu C,et al.2018.P-wave tomography of northeast Asia:Constraints on the western pacific plate subduction and mantle dynamics.Physics of the Earth and Planetary Interiors,274:105-126.
Maceira M,Ammon C J.2009.Joint inversion of surface wave velocity and gravity observations and its application to central Asian basins shear velocity structure.Journal of Geophysical Research:Solid Earth,114(B2):B02314,doi:10.1029/2007JB005157.
Mu S M,Shen N H,Sun Y S.1990.Method of Regional Geophysical Data Processing and Application(in Chinese).Changchun:Jilin Science&Technology Press.
Pan J T,Li Y H,Wu Q J,et al.2014.3-D S-wave velocity structure of crust and upper-mantle beneath the northeast China.Chinese Journal of Geophysics(in Chinese),57(7):2077-2087,doi:10.6038/cjg20140705.
Pilkington M.1997.3-D magnetic imaging using conjugate gradients:Geophysics,62(4):1132-1142.
Sharp W D,Clague D A.2006.50-Ma initiation of HawaiianEmperor bend records major change in Pacific plate motion.Science,313(5791):1281-1284.
Suo K,Zhang G B,Jiang G M,et al.2015.3-D density distribution of the crust and upper mantle beneath Northeast China by joint inversion of gravity and seismic data.Chinese Journal of Geophysics(in Chinese),58(7):2436-2444,doi:10.6038/cjg20150720.
Tian Y,Liu C,Feng X.2011.P-wave velocity structure of crust and upper mantle in Northeast China and its control on the formation of mineral and energy.Chinese Journal of Geophysics(in Chinese),54(2):407-414,doi:10.3969/j.issn.0001-5733.2011.02.017.
Tian Y,Zhu H X,Zhao D P,et al.2016.Mantle transition zone structure beneath the Changbai volcano:Insight into deep slab dehydration and hot upwelling near the 410km discontinuity.Journal of Geophysical Research:Solid Earth,121(8):5794-5808.
Tiberi C,Deschamps A,Déverchère J,et al.2008.Asthenospheric imprints on the lithosphere in Central Mongolia and Southern Siberia from a joint inversion of gravity and seismology(MOBAL experiment).Geophysical Journal International,175(3):1283-1297.
Tu G H,Jiang W W,Zhu D Y,et al.2006.The relationships between the characteristics of Northeast China residual gravity and magnetic anomalies and geological tectonic&metallogenic belt.Progress in Geophysics(in Chinese),21(3):746-755.
Wang K Y,Liu D,Liu J R,et al.2015.Crustal seismic in the northeast of China.Progress in Geophysics(in Chinese),30(1):61-69,doi:10.6038/pg20150110.
Wang T H,Huang D N,Ma G Q,et al.2017.Improved preconditioned conjugate gradient algorithm and application in3Dinversion of gravity-gradiometry data.Applied Geophysics,14(2):301-313.
Wei W,Xu J D,Zhao D P,et al.2012.East Asia mantle tomography:New insight into plate subduction and intraplate volcanism.Journal of Asian Earth Sciences,60:88-103.
Xu Y,Zhang G B,Jiang G M,et al.2014.3-D velocity structure and the deep mechanism of the origin of volcanoes in Northeast China.Earth Science Frontiers(in Chinese),21(4):255-265.
Yang B J,Liu C,Liu W S,et al.2006.Seismological features of the lithospheric structure in Northeast China and dynamic controls on mineral resources.Geology in China(in Chinese),33(4):866-873.
Zhang R Q,Gao Z Y,Wu Q J,et al.2016.Seismic images of the mantle transition zone beneath Northeast China and the SinoKorean craton from P-wave receiver functions.Tectonophysics,675:159-167.
Zhao D P,Hasegawa A,Kanamori H.1994.Deep structure of Japan subduction zone as derived from local,regional,and teleseismic events.Journal of Geophysical Research:Solid Earth,99(B11):22313-22329.
Zhao D P,Lei J S,Tang R Y.2004.Origin of the Changbai intra plate volcanism in Northeast China:Evidence from seismic tomography.Chinese Science Bulletin,49(13):1401-1408.
Zhao D P.2004.Global tomographic images of mantle plumes and subducting slabs:Insight into deep Earth dynamics.Physics of the Earth and Planetary Interiors,146(1-2):3-34.
Zhdanov M S.2002.Geophysical Inverse Theory and Regularization Problems.Salt Lake City:Elsevier Science.
Zhou J B,Wilde S A,Zhang X Z,et al.2009.The onset of pacific margin accretion in ne china:evidence from the heilongjiang high-pressure metamorphic belt.Tectonophysics,478(3),230-246.
杜晓娟,孟令顺,张明仁.2009.利用重力场研究东北地区断裂分布及构造分区.地球科学与环境学报,31(2):200-206.
贺日政,高锐,郑洪伟等.2007.青藏高原中西部航磁异常的匹配滤波分析与构造意义.地球物理学报,50(4):1131-1140.
穆石敏,申宁华,孙运生.1990.区域地球物理数据处理方法及其应用.长春:吉林科学技术出版社.
潘佳铁,李永华,吴庆举等.2014.中国东北地区地壳上地幔三维S波速度结构.地球物理学报,57(7):2077-2087,doi:10.6038/cjg20140705.
索奎,张贵宾,江国明等.2015.重震反演中国东北地壳上地幔三维密度结构.地球物理学报,58(7):2436-2444,doi:10.6038/cjg20150720.
田有,刘财,冯晅.2011.中国东北地区地壳、上地幔速度结构及其对矿产能源形成的控制作用.地球物理学报,54(2):407-414,doi:10.3969/j.issn.0001-5733.2011.02.017.
涂广红,江为为,朱东英等.2006.中国东北地区剩余重磁异常特征与地质构造及成矿带的关系.地球物理学进展,21(3):746-755.
王开燕,刘丹,柳俊茹等.2015.东北地区地壳结构研究.地球物理学进展,30(1):61-69,doi:10.6038/pg20150110.
徐峣,张贵宾,江国明等.2014.中国东北地区三维速度结构与火山起源的深部机制.地学前缘,21(4):255-265.
杨宝俊,刘财,刘万崧等.2006.中国东北地区岩石圈结构的地震学特征与对矿产资源的动力控制作用.中国地质,33(4):866-873.
赵大鹏,雷建设,唐荣余.2004.中国东北长白山火山的起源:地震层析成像证据.科学通报,49(14):1439-1446.
Blakely R.J.1995.Potential Theory in Gravity and Magnetic Applications.Cambridge:Cambridge University Press.
Braitenberg C,Wienecke S,&Wang Y.2006.Basement structures from satellite-derived gravity field:south china sea ridge.Journal of Geophysical Research Solid Earth,111(B5),B05407,doi:10.1029/2005JB003938.
Chen C X,Zhao D P,Tian Y,et al.2017.Mantle transition zone,stagnant slab and intraplate volcanism in northeast Asia.Geophysical Journal International,209(1):68-85.
Chen L.2010.Concordant structural variations from the surface to the base of the upper mantle in the north china craton and its tectonic implications.Lithos,120(1-2):96-115.
Du X J,Meng L S,Zhang M R.2009.Research on fault distribution and tectonic divisions in Northeast China in terms of gravity field.Journal of Earh Sciences and Environment(in Chinese),31(2):200-206.
Goes S,Lee S V D.2002.Thermal structure of the North American uppermost mantle inferred from seismic tomography.Journal of Geophysical Research:Solid Earth,107(B3):ETG 2-1-ETG 2-13.
Guo Z,Chen Y J,Ning J Y,et al.2015.High resolution 3-Dcrustal structure beneath NE China from joint inversion of ambient noise and receiver functions using NECESSArray data.Earth and Planetary Science Letters,416:1-11.
Guo Z,Chen Y J,Ning J Y,et al.2016.Seismic evidence of ongoing sublithosphere upper mantle convection for intra-plate volcanism in Northeast China.Earth and Planetary Science Letters,433:31-43.
He R Z,Gao R,Zheng H W,et al.2007.Matched-filter analysis of aeromagnetic anomaly in mid-western Tibetan Plateau and its tectonic implications.Chinese Journal of Geophysics(in Chinese),50(4):1131-1140.
Huang J L,Zhao D P.2006.High-resolution mantle tomography of China and surrounding regions.Journal of Geophysical Research:Solid Earth,111(B9):4813-4825,doi:10.1029/2005JB004066.
Kaban M K,Mooney W D,Petrunin A G.2015.Cratonic root beneath North America shifted by basal drag from the convecting mantle.Nature Geoscience,8(10):797-800.
Kaban M K,Stolk W,Tesauro M,et al.2016.3Ddensity model of the upper mantle of Asia based on inversion of gravity and seismic tomography data.Geochemistry,Geophysics,Geosystems,17(11):4457-4477.
Kelty T K,Yin A,Dash B,et al.2008.Detrital-zircon geochronology of Paleozoic sedimentary rocks in the Hangay-Hentey basin,northcentral Mongolia:Implications for the tectonic evolution of the Mongol-Okhotsk Ocean in central Asia.Tectonophysics,451(1-4):290-311.
Koppers A A P,Morgan J P,Morgan J W,et al.2001.Testing the fixed hotspot hypothesis using 40 Ar/39 Ar age progressions along seamount trails.Earth and Planetary Science Letters,185(3-4):237-252.
Koppers A A P,Staudigel H,Duncan R A.2003.High-resolution40 Ar/39 Ar dating of the oldest oceanic basement basalts in the western Pacific basin.Geochemistry,Geophysics,Geosystems,4(11):8914,doi:10.1029/2003GC000574.
Lei J S,Zhao D P.2005.P-wave tomography and origin of the Changbai intraplate volcano in Northeast Asia.Tectonophysics,397(3-4):281-295.
Li X,Chouteau M.1998.Three-dimensional gravity modeling in all space.Surveys in Geophysics,19(4):339-368.
Li Y G,Oldenburg D W.2000.Joint inversion of surface and threecomponent borehole magnetic data.Geophysics,65(2):540-552.
Liu Z,Niu F L,Chen Y J,et al.2015.Receiver function images of the mantle transition zone beneath NE China:New constraints on intraplate volcanism,deep subduction and their potential link.Earth and Planetary Science Letters,412:101-111.
Ma J C,Tian Y,Liu C,et al.2018.P-wave tomography of northeast Asia:Constraints on the western pacific plate subduction and mantle dynamics.Physics of the Earth and Planetary Interiors,274:105-126.
Maceira M,Ammon C J.2009.Joint inversion of surface wave velocity and gravity observations and its application to central Asian basins shear velocity structure.Journal of Geophysical Research:Solid Earth,114(B2):B02314,doi:10.1029/2007JB005157.
Mu S M,Shen N H,Sun Y S.1990.Method of Regional Geophysical Data Processing and Application(in Chinese).Changchun:Jilin Science&Technology Press.
Pan J T,Li Y H,Wu Q J,et al.2014.3-D S-wave velocity structure of crust and upper-mantle beneath the northeast China.Chinese Journal of Geophysics(in Chinese),57(7):2077-2087,doi:10.6038/cjg20140705.
Pilkington M.1997.3-D magnetic imaging using conjugate gradients:Geophysics,62(4):1132-1142.
Sharp W D,Clague D A.2006.50-Ma initiation of HawaiianEmperor bend records major change in Pacific plate motion.Science,313(5791):1281-1284.
Suo K,Zhang G B,Jiang G M,et al.2015.3-D density distribution of the crust and upper mantle beneath Northeast China by joint inversion of gravity and seismic data.Chinese Journal of Geophysics(in Chinese),58(7):2436-2444,doi:10.6038/cjg20150720.
Tian Y,Liu C,Feng X.2011.P-wave velocity structure of crust and upper mantle in Northeast China and its control on the formation of mineral and energy.Chinese Journal of Geophysics(in Chinese),54(2):407-414,doi:10.3969/j.issn.0001-5733.2011.02.017.
Tian Y,Zhu H X,Zhao D P,et al.2016.Mantle transition zone structure beneath the Changbai volcano:Insight into deep slab dehydration and hot upwelling near the 410km discontinuity.Journal of Geophysical Research:Solid Earth,121(8):5794-5808.
Tiberi C,Deschamps A,Déverchère J,et al.2008.Asthenospheric imprints on the lithosphere in Central Mongolia and Southern Siberia from a joint inversion of gravity and seismology(MOBAL experiment).Geophysical Journal International,175(3):1283-1297.
Tu G H,Jiang W W,Zhu D Y,et al.2006.The relationships between the characteristics of Northeast China residual gravity and magnetic anomalies and geological tectonic&metallogenic belt.Progress in Geophysics(in Chinese),21(3):746-755.
Wang K Y,Liu D,Liu J R,et al.2015.Crustal seismic in the northeast of China.Progress in Geophysics(in Chinese),30(1):61-69,doi:10.6038/pg20150110.
Wang T H,Huang D N,Ma G Q,et al.2017.Improved preconditioned conjugate gradient algorithm and application in3Dinversion of gravity-gradiometry data.Applied Geophysics,14(2):301-313.
Wei W,Xu J D,Zhao D P,et al.2012.East Asia mantle tomography:New insight into plate subduction and intraplate volcanism.Journal of Asian Earth Sciences,60:88-103.
Xu Y,Zhang G B,Jiang G M,et al.2014.3-D velocity structure and the deep mechanism of the origin of volcanoes in Northeast China.Earth Science Frontiers(in Chinese),21(4):255-265.
Yang B J,Liu C,Liu W S,et al.2006.Seismological features of the lithospheric structure in Northeast China and dynamic controls on mineral resources.Geology in China(in Chinese),33(4):866-873.
Zhang R Q,Gao Z Y,Wu Q J,et al.2016.Seismic images of the mantle transition zone beneath Northeast China and the SinoKorean craton from P-wave receiver functions.Tectonophysics,675:159-167.
Zhao D P,Hasegawa A,Kanamori H.1994.Deep structure of Japan subduction zone as derived from local,regional,and teleseismic events.Journal of Geophysical Research:Solid Earth,99(B11):22313-22329.
Zhao D P,Lei J S,Tang R Y.2004.Origin of the Changbai intra plate volcanism in Northeast China:Evidence from seismic tomography.Chinese Science Bulletin,49(13):1401-1408.
Zhao D P.2004.Global tomographic images of mantle plumes and subducting slabs:Insight into deep Earth dynamics.Physics of the Earth and Planetary Interiors,146(1-2):3-34.
Zhdanov M S.2002.Geophysical Inverse Theory and Regularization Problems.Salt Lake City:Elsevier Science.
Zhou J B,Wilde S A,Zhang X Z,et al.2009.The onset of pacific margin accretion in ne china:evidence from the heilongjiang high-pressure metamorphic belt.Tectonophysics,478(3),230-246.
杜晓娟,孟令顺,张明仁.2009.利用重力场研究东北地区断裂分布及构造分区.地球科学与环境学报,31(2):200-206.
贺日政,高锐,郑洪伟等.2007.青藏高原中西部航磁异常的匹配滤波分析与构造意义.地球物理学报,50(4):1131-1140.
穆石敏,申宁华,孙运生.1990.区域地球物理数据处理方法及其应用.长春:吉林科学技术出版社.
潘佳铁,李永华,吴庆举等.2014.中国东北地区地壳上地幔三维S波速度结构.地球物理学报,57(7):2077-2087,doi:10.6038/cjg20140705.
索奎,张贵宾,江国明等.2015.重震反演中国东北地壳上地幔三维密度结构.地球物理学报,58(7):2436-2444,doi:10.6038/cjg20150720.
田有,刘财,冯晅.2011.中国东北地区地壳、上地幔速度结构及其对矿产能源形成的控制作用.地球物理学报,54(2):407-414,doi:10.3969/j.issn.0001-5733.2011.02.017.
涂广红,江为为,朱东英等.2006.中国东北地区剩余重磁异常特征与地质构造及成矿带的关系.地球物理学进展,21(3):746-755.
王开燕,刘丹,柳俊茹等.2015.东北地区地壳结构研究.地球物理学进展,30(1):61-69,doi:10.6038/pg20150110.
徐峣,张贵宾,江国明等.2014.中国东北地区三维速度结构与火山起源的深部机制.地学前缘,21(4):255-265.
杨宝俊,刘财,刘万崧等.2006.中国东北地区岩石圈结构的地震学特征与对矿产资源的动力控制作用.中国地质,33(4):866-873.
赵大鹏,雷建设,唐荣余.2004.中国东北长白山火山的起源:地震层析成像证据.科学通报,49(14):1439-1446.
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