华北克拉通西部块体北缘及邻区地壳厚度与泊松比分布特征
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摘要
收集了2010—2011年华北克拉通西部块体北缘及邻区布设的36个流动地震台和2009—2016年内蒙古自治区数字地震台网17个宽频带固定地震台站的远震事件波形数据,采用接收函数H-κ算法分析获得了53个基岩台站下方的地壳厚度和泊松比结果。此外,结合已有的81个台站的研究成果,给出华北克拉通西部块体北缘及邻区地壳厚度与泊松比分布特征。综合分析认为,研究区地壳厚度在整体上呈现自东向西渐变的特征,最厚的地方出现在华北克拉通西端的阿拉善地块(～48.7±3.0 km)。研究区平均泊松比为0.27,泊松比高值异常出现在河套断陷带,意味着可能具有较高的地壳温度或者存在壳内部分熔融。研究区内不同构造单元呈现出显著的地壳厚度和泊松比分布特征的差异性,意味着在华北克拉通构造演化过程中,不同地区经历了不同的地壳改造过程。
We collect waveform data of worldwide teleseismic events by 17 broadband seismic stations from the Inner Mongolia Autonomous Region Digital Seismic Network and 36 temporary seismic stations distributed in northern margin of the western part of North China Craton and adjacent areas during different periods of 2009—2016 and 2010—2011, respectively. Using the receiver functions of H-κ method, we calculated the crustal thickness and Poisson's ratio beneath 53 stations constructed on bedrocks. We present the crustal thickness and Poisson's ratio distribution characteristic of the northern margin of the western part of North China Craton and adjacent areas based on a compilation of 81 seismic stations for receiver function H-κ analysis published in the literature and our results. Comprehensively analyzing the fine crustal constrains distribution information in this study lead to the following conclusions. The crustal thickness of the study area gradually increases from east to west overall. The thickest crust is found in the Alxa block located in the western part of North China Craton(～48.7±3.0 km). The average crustal Poisson's ratio is about 0.27. The highest Poisson's ratio is found in the Hetao rift, indicating high ambient crustal temperatures or wide-spread intra-crustal melting. There is significant difference of crustal thickness and Poisson's ratio on the different tectonic units, they may reflect that those areas experience distinct processes of crustal modification in the tectonic evolution process of the North China Craton.
We collect waveform data of worldwide teleseismic events by 17 broadband seismic stations from the Inner Mongolia Autonomous Region Digital Seismic Network and 36 temporary seismic stations distributed in northern margin of the western part of North China Craton and adjacent areas during different periods of 2009—2016 and 2010—2011, respectively. Using the receiver functions of H-κ method, we calculated the crustal thickness and Poisson's ratio beneath 53 stations constructed on bedrocks. We present the crustal thickness and Poisson's ratio distribution characteristic of the northern margin of the western part of North China Craton and adjacent areas based on a compilation of 81 seismic stations for receiver function H-κ analysis published in the literature and our results. Comprehensively analyzing the fine crustal constrains distribution information in this study lead to the following conclusions. The crustal thickness of the study area gradually increases from east to west overall. The thickest crust is found in the Alxa block located in the western part of North China Craton(～48.7±3.0 km). The average crustal Poisson's ratio is about 0.27. The highest Poisson's ratio is found in the Hetao rift, indicating high ambient crustal temperatures or wide-spread intra-crustal melting. There is significant difference of crustal thickness and Poisson's ratio on the different tectonic units, they may reflect that those areas experience distinct processes of crustal modification in the tectonic evolution process of the North China Craton.
引文
[1]李多,周仕勇,陈永顺,等.鄂尔多斯地区上地幔岩石圈三维速度结构面波反演研究[J].地球物理学报,2012,55(5):1 613-1 623.
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[3]Zhao G,Sun M,Wilde S A,et al.Late Archean to Paleoproterozoic evolution of the North China Craton:key issues revisited[J].Precambrian Research,2005,136(2):177-202.
[4]Wu C,Zhong C T.The Paleoproterozoic SW-NE collision model for the central North China Craton[J].Progress in Precambrian Research,1998,21(3):28-50.
[5]Lu L,Xu X,Liu F.Early Precambrian Khondalite Series in North China[M].Changchun:Changchun Publishing House,1996.
[6]Griffin W,Andi Z,O’Reilly S,et al.Phanerozoic evolution of the lithosphere beneath the Sino-Korean craton[J].Mantle dynamics and plate interactions in East Asia,1998,107-126.
[7]Menzies M A,Xu Y.Geodynamics of the North China craton[J].Mantle dynamics and plate interactions in East Asia,1998,155-165.
[8]吴福元,葛文春,孙德有,等.中国东部岩石圈减薄研究中的几个问题[J].地学前缘,2003,10(3):51-60.
[9]Wu F,Xu Y G,Gao S,et al.Lithospheric thinning and destruction of the North China Craton[J].Acta Petrologica Sinica,2008,24(6):1 145-1 174.
[10]张岳桥,廖昌珍.晚中生代-新生代构造体制转换与鄂尔多斯盆地改造[J].中国地质,2006,33(1):28-40.
[11]杨彦明.内蒙古精细地壳结构研究[D].合肥:中国科学技术大学,2017.
[12]杨彦明,张国清,陈婧,等.鄂尔多斯块体北缘及邻区Moho面深度特征[J].地震地磁观测与研究,2016,37(6):1-8.
[13]杨彦明,戴勇,张国清,等.内蒙古中西部地区地震烈度衰减关系[J].地震地磁观测与研究,2016,37(1):30-37.
[14]范俊喜,马瑾,甘卫军.鄂尔多斯地块运动的整体性与不同方向边界活动的交替性[J].中国科学(D辑:地球科学),2003,33(S1):119-128.
[15]李延兴,张静华,郭良迁,等.鄂尔多斯的逆时针旋转与动力学[J].大地测量与地球动力学,2005,25(3):50-56.
[16]Phinney R A.Structure of the Earth's crust from spectral behavior of long‐period body waves[J].Journal of Geophysical Research,1964,69(14):2 997-3 017.
[17]Helmberger D,Wiggins R A.Upper mantle structure of midwestern United States[J].Journal of Geophysical Research,1971,76(14):3 229-3 245.
[18]Langston C A.Structure under Mount Rainier,Washington,inferred from teleseismic body waves[J].Journal of Geophysical Research:Solid Earth,1979,84(B9):4 749-4 762.
[19]Owens T J,Zandt G,Taylor S R.Seismic evidence for an ancient rift beneath the Cumberland Plateau,Tennessee:A detailed analysis of broadband teleseismic P waveforms[J].Journal of Geophysical Research:Solid Earth,1984,89(B9):7 783-7 795.
[20]Ammon C J,Randall G E,Zandt G.On the nonuniqueness of receiver function inversions[J].Journal of Geophysical Research:Solid Earth,1990,95(B10):15 303-15 318.
[21]Ammon C J.The isolation of receiver effects from teleseismic P waveforms[J].Bulletin of the seismological Society of America,1991,81(6):2 504-2 510.
[22]Kind R,Kosarey G,Petersen N.Receiver functions at the stations of the German Regional Seismic Network(GRSN)[J].Geophysical Journal International,1995,121(1):191-202.
[23]Tian X,Teng J,Zhang H,et al.Structure of crust and upper mantle beneath the Ordos Block and the Yinshan Mountains revealed by receiver function analysis[J].Physics of the Earth and Planetary Interiors,2011,184(3):186-193.
[24]刘启元,李顺成.接收函数复谱比的最大或然性估计及非线性反演[J].地球物理学报,1996,39(4):500-511.
[25]陈九辉,刘启元.合成三维横向非均匀介质远震体波接收函数的Maslov方法[J].地球物理学报,1999,42(01):84-93.
[26]张广成,吴庆举,潘佳铁,等.利用H-K叠加方法和CCP叠加方法研究中国东北地区地壳结构与泊松比[J].地球物理学报,2013,(12):4 084-4 094.
[27]Zhu L,Kanamori H.Moho depth variation in southern California from teleseismic receiver functions[J].Journal of Geophysical Research:Solid Earth,2000,105(B2):2 969-2 980.
[28]郑秀芬,欧阳飚,张东宁,等.“国家测震台网数据备份中心”技术系统建设及其对汶川大地震研究的数据支撑[J].地球物理学报,2009,52(5):1 412-1 417.
[29]中国地震科学台阵.中国地震科学探测台阵波形数据.中国地震局,2006,doi:10.12001/ChinArray.Data.
[30]Wang C Y,Sandvol E,Zhu L P,et al.Lateral variation of crustal structure in the Ordos block and surrounding regions,North China,and its tectonic implications[J].Earth Planet Sci Lett,2014,387:198-211.
[31]Wei Z G,Chen L,Wang B Y.Regional variations in crustal thickness and VP/VS ratio beneath the central-western North China Craton and adjacent regions[J].Geological Journal,2013,48:531-542.
[32]任枭,徐志国,杨辉,等.鄂尔多斯地块东南缘地带Moho深度变化特征研究[J].地球物理学报,2012,55(12):4 089-4 096.
[33]Christensen N I.Poisson’s ratio and crustal seismology[J].J Geophys Res,1996,101(B2):3 139-3 156.
[34]Zhu L.Crustal structure across the San Andreas Fault,southern California from teleseismic converted waves[J].Earth and Planetary Science Letters,2000,179(1):183-190.
[35]齐刚,陈棋福.太行山与燕山交汇部位的地壳厚度与泊松比分布特征[J].地球物理学报,2015,58(9):3 239-3 250.
[36]曹刚.内蒙古地震研究[M].北京:地震出版社,2001.
[37]宫猛,李信富,张素欣,等.利用接收函数研究河北及邻区地壳厚度与泊松比分布特征[J].地震,2015,35(2):34-42.
[38]童蔚蔚,王良书,米宁,等.利用接收函数研究六盘山地区地壳上地幔结构特征[J].中国科学:地球科学,2007,37(S1):193-198.
[39]李永华,吴庆举,安张辉,等.青藏高原东北缘地壳S波速度结构与泊松比及其意义[J].地球物理学报,2006,49(5):1 359-1 368.
[40]Fountain D M,Christensen N I.Composition of the continental crust and upper mantle;a review[J].Geological Society of America Memoirs,1989,172:711-742.
[41]沈玉松,康英,徐果明.广东及其邻域的地壳厚度和泊松比分布[J].中国地震,2013,29(2):210-218.
[42]Zandt G,Ammon C J.Continental crust composition constrained by measurements of crustal Poisson′s ratio[J].Nature,1995,374(6 518):152-154.
[43]危自根,储日升,陈凌.华北克拉通地壳结构区域差异的接收函数研究[J].中国科学:地球科学,2015,45(10):1 504-1 514.
[2]徐树斌.地震接收函数和背景噪声成像方法研究地壳及上地幔顶部速度结构[D].南京:南京大学,2013.
[3]Zhao G,Sun M,Wilde S A,et al.Late Archean to Paleoproterozoic evolution of the North China Craton:key issues revisited[J].Precambrian Research,2005,136(2):177-202.
[4]Wu C,Zhong C T.The Paleoproterozoic SW-NE collision model for the central North China Craton[J].Progress in Precambrian Research,1998,21(3):28-50.
[5]Lu L,Xu X,Liu F.Early Precambrian Khondalite Series in North China[M].Changchun:Changchun Publishing House,1996.
[6]Griffin W,Andi Z,O’Reilly S,et al.Phanerozoic evolution of the lithosphere beneath the Sino-Korean craton[J].Mantle dynamics and plate interactions in East Asia,1998,107-126.
[7]Menzies M A,Xu Y.Geodynamics of the North China craton[J].Mantle dynamics and plate interactions in East Asia,1998,155-165.
[8]吴福元,葛文春,孙德有,等.中国东部岩石圈减薄研究中的几个问题[J].地学前缘,2003,10(3):51-60.
[9]Wu F,Xu Y G,Gao S,et al.Lithospheric thinning and destruction of the North China Craton[J].Acta Petrologica Sinica,2008,24(6):1 145-1 174.
[10]张岳桥,廖昌珍.晚中生代-新生代构造体制转换与鄂尔多斯盆地改造[J].中国地质,2006,33(1):28-40.
[11]杨彦明.内蒙古精细地壳结构研究[D].合肥:中国科学技术大学,2017.
[12]杨彦明,张国清,陈婧,等.鄂尔多斯块体北缘及邻区Moho面深度特征[J].地震地磁观测与研究,2016,37(6):1-8.
[13]杨彦明,戴勇,张国清,等.内蒙古中西部地区地震烈度衰减关系[J].地震地磁观测与研究,2016,37(1):30-37.
[14]范俊喜,马瑾,甘卫军.鄂尔多斯地块运动的整体性与不同方向边界活动的交替性[J].中国科学(D辑:地球科学),2003,33(S1):119-128.
[15]李延兴,张静华,郭良迁,等.鄂尔多斯的逆时针旋转与动力学[J].大地测量与地球动力学,2005,25(3):50-56.
[16]Phinney R A.Structure of the Earth's crust from spectral behavior of long‐period body waves[J].Journal of Geophysical Research,1964,69(14):2 997-3 017.
[17]Helmberger D,Wiggins R A.Upper mantle structure of midwestern United States[J].Journal of Geophysical Research,1971,76(14):3 229-3 245.
[18]Langston C A.Structure under Mount Rainier,Washington,inferred from teleseismic body waves[J].Journal of Geophysical Research:Solid Earth,1979,84(B9):4 749-4 762.
[19]Owens T J,Zandt G,Taylor S R.Seismic evidence for an ancient rift beneath the Cumberland Plateau,Tennessee:A detailed analysis of broadband teleseismic P waveforms[J].Journal of Geophysical Research:Solid Earth,1984,89(B9):7 783-7 795.
[20]Ammon C J,Randall G E,Zandt G.On the nonuniqueness of receiver function inversions[J].Journal of Geophysical Research:Solid Earth,1990,95(B10):15 303-15 318.
[21]Ammon C J.The isolation of receiver effects from teleseismic P waveforms[J].Bulletin of the seismological Society of America,1991,81(6):2 504-2 510.
[22]Kind R,Kosarey G,Petersen N.Receiver functions at the stations of the German Regional Seismic Network(GRSN)[J].Geophysical Journal International,1995,121(1):191-202.
[23]Tian X,Teng J,Zhang H,et al.Structure of crust and upper mantle beneath the Ordos Block and the Yinshan Mountains revealed by receiver function analysis[J].Physics of the Earth and Planetary Interiors,2011,184(3):186-193.
[24]刘启元,李顺成.接收函数复谱比的最大或然性估计及非线性反演[J].地球物理学报,1996,39(4):500-511.
[25]陈九辉,刘启元.合成三维横向非均匀介质远震体波接收函数的Maslov方法[J].地球物理学报,1999,42(01):84-93.
[26]张广成,吴庆举,潘佳铁,等.利用H-K叠加方法和CCP叠加方法研究中国东北地区地壳结构与泊松比[J].地球物理学报,2013,(12):4 084-4 094.
[27]Zhu L,Kanamori H.Moho depth variation in southern California from teleseismic receiver functions[J].Journal of Geophysical Research:Solid Earth,2000,105(B2):2 969-2 980.
[28]郑秀芬,欧阳飚,张东宁,等.“国家测震台网数据备份中心”技术系统建设及其对汶川大地震研究的数据支撑[J].地球物理学报,2009,52(5):1 412-1 417.
[29]中国地震科学台阵.中国地震科学探测台阵波形数据.中国地震局,2006,doi:10.12001/ChinArray.Data.
[30]Wang C Y,Sandvol E,Zhu L P,et al.Lateral variation of crustal structure in the Ordos block and surrounding regions,North China,and its tectonic implications[J].Earth Planet Sci Lett,2014,387:198-211.
[31]Wei Z G,Chen L,Wang B Y.Regional variations in crustal thickness and VP/VS ratio beneath the central-western North China Craton and adjacent regions[J].Geological Journal,2013,48:531-542.
[32]任枭,徐志国,杨辉,等.鄂尔多斯地块东南缘地带Moho深度变化特征研究[J].地球物理学报,2012,55(12):4 089-4 096.
[33]Christensen N I.Poisson’s ratio and crustal seismology[J].J Geophys Res,1996,101(B2):3 139-3 156.
[34]Zhu L.Crustal structure across the San Andreas Fault,southern California from teleseismic converted waves[J].Earth and Planetary Science Letters,2000,179(1):183-190.
[35]齐刚,陈棋福.太行山与燕山交汇部位的地壳厚度与泊松比分布特征[J].地球物理学报,2015,58(9):3 239-3 250.
[36]曹刚.内蒙古地震研究[M].北京:地震出版社,2001.
[37]宫猛,李信富,张素欣,等.利用接收函数研究河北及邻区地壳厚度与泊松比分布特征[J].地震,2015,35(2):34-42.
[38]童蔚蔚,王良书,米宁,等.利用接收函数研究六盘山地区地壳上地幔结构特征[J].中国科学:地球科学,2007,37(S1):193-198.
[39]李永华,吴庆举,安张辉,等.青藏高原东北缘地壳S波速度结构与泊松比及其意义[J].地球物理学报,2006,49(5):1 359-1 368.
[40]Fountain D M,Christensen N I.Composition of the continental crust and upper mantle;a review[J].Geological Society of America Memoirs,1989,172:711-742.
[41]沈玉松,康英,徐果明.广东及其邻域的地壳厚度和泊松比分布[J].中国地震,2013,29(2):210-218.
[42]Zandt G,Ammon C J.Continental crust composition constrained by measurements of crustal Poisson′s ratio[J].Nature,1995,374(6 518):152-154.
[43]危自根,储日升,陈凌.华北克拉通地壳结构区域差异的接收函数研究[J].中国科学:地球科学,2015,45(10):1 504-1 514.