PDF Download HTML

[1]FAN Xintian,WEI Zigen,XIE Jun,et al.Study of the Crust-Mantle Transition Zone and Magma Upwelling Conduits Beneath the Tengchong Volcano Area[J].Journal of Seismological Research,2025,(01):41-48.[doi:10.20015/j.cnki.ISSN1000-0666.2025.0005 ]

Copy

Study of the Crust-Mantle Transition Zone and Magma Upwelling Conduits Beneath the Tengchong Volcano Area

Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume: Number of periods: 2025 01 Page number: 41-48 Column: Public date: 2024-12-20

Title:: Study of the Crust-Mantle Transition Zone and Magma Upwelling Conduits Beneath the Tengchong Volcano Area

Author(s):: FAN Xintian¹; 2; WEI Zigen¹; XIE Jun¹; CHENG Zhiwei³; LING Yuan⁴; LI Xuelei⁵; LIU Yiwei¹; 2; (1.State Key Laboratory of Geodesy and Earth's Dynamics,Innovation Academy for Precision Measurement Science and Technology,Chinese Academy of Sciences,Wuhan 430077,Hubei,China；2.College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing 100049,China；3.School of Earth Sciences and Engineering,Hebei University of Engineering,Handan 056038,Hebei,China；4.Key Laboratory of Earth and Planetary Physics,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China；5.School of Microelectronics and Physics,Hunan University of Technology and Business,Changsha 410205,Hunan,China)

Keywords:: Tengchong volcano area; amplitude ratios of receiver functions; crustal thickness; Crust-Mantle transition zone; Mantle upwelling conduits

CLC:: P317

DOI:: 10.20015/j.cnki.ISSN1000-0666.2025.0005

Abstract:: The Crust-Mantle transition zone serves as a critical interface for the exchange of material and energy between the Earth's Crust and Mantle,closely tied to deep processes and tectonic evolution in the region.This study extracts characteristics of crustal thickness variation with frequency from receiver functions H-κ stacking beneath 31 seismic stations in the Tengchong volcanic area,as well as the Ps/P and PpPs/P amplitude ratios of the receiver functions.It reveals that the Heikongshan-Randengsi area to the north of the Yingjiang fault and the Shabatai area to the south exhibit lower amplitude ratios and a crustal thickness difference of approximately 2 km compared to surrounding regions.Combining these observations with previous findings of relatively thin Crust and high V_P/V_S ratios in these two areas suggests a thick Crust-Mantle transition zone,hypothesized as conduits for Mantle material into the Crust.Building on previous findings of extensive low-velocity features in the upper,middle,and lower Crust of the region,this paper postulates that magma from the Mantle likely ascends through the Crust along the Tengchong volcanic area,specifically through the regions of Heikongshan-Randengsi and Shabatai.Subsequently,it enriches and laterally spreads within the lower,middle,and upper Crust,eventually erupting onto the surface through multiple channels.

References:: 范心甜,危自根,储日升,等.2025.腾冲火山壳幔结构及其对岩浆系统的启示[J].地球物理学报,doi:10.6038/cjg2023R0631.
Fan X T,Wei Z G,Chu R S,et al.2025.Crust-mantle structure of Tengchong volcanic area and its implication for magmatic systems[J].Chinese Journal of Geophysics,doi:10.6038/cjg2023R0631.(in Chinese)
胡家富,胡毅力,夏静瑜,等.2008.缅甸弧及邻区的壳幔S波速度结构与动力学过程[J].地球物理学报,51(1):140-148.
Hu J F,Hu Y L,Xia J Y,et al.2008.Crust-mantle velocity structure of S wave and dynamic process beneath Burma Arc and its adjacent regions[J].Chinese Journal of Geophysics,51(1):140-148.(in Chinese)
华雨淋,吕彦.2019.腾冲火山及周边地区双差层析成像[J].地球物理学报,62(8):2982-2990.
Hua Y L,Lyu Y.2019.Double differential tomography of the Tengchong volcano and adjacent areas[J].Chinese Journal of Geophysics,62(8):2982-2990.(in Chinese)
皇甫岗.1997.腾冲火山研究综述[J].地震研究,20(4):431-437.
Huangfu G.1997.Review of studies on Tengchong volcanoes[J].Journal of Seismological Research,20(4):431-437.(in Chinese)
季灵运,王庆良,崔笃信,等.2011.利用SBAS-DInSAR技术提取腾冲火山区形变时间序列[J].大地测量与地球动力学,31(4):149-153.
Ji L Y,Wang Q L,Cui D X,et al.2011.Time series of deformation in tengchong volcanic area extracted by SBAS-DInSAR[J].Journal of Geodesy and Geodynamics,31(4):149-153.(in Chinese)
李霓,张柳毅.2011.云南腾冲新期火山岩矿物及其熔体包裹体研究[J].岩石学报,27(10):2842-2854.
Li N,Zhang L Y.2011.A study on volcanic minerals and hosted melt inclusions in newly-erupted Tengchong volcanicrocks,Yunnan Province[J].Acta Petrologica Sinica,27(10):2842-2854.(in Chinese)
李雪垒,胥颐,汪晟.2017.腾冲火山区S波速度结构与岩浆活动特征[J].科学通报,62(26):3067-3077.
Li X L,Xu Y,Wang S.2017.Evidence of magma activity from S-wave velocity structure of the Tengchong volcanic area[J].Chinese Science Bulletin,62(26):3067-3077.(in Chinese)
马永,张海江,高磊,等.2023.滇西地区地壳三维精细结构成像与构造特征研究[J].地球物理学报,66(9):3674-691.
Ma Y,Zhang H J,Gao L,et al.2023.Three-dimensional fine structure imaging and tectonic characteristics of the crust in western Yunnan[J].Chinese Journal of Geophysics,66(9):3674-3691.(in Chinese)
滕吉文.2006.地球深部壳-幔边界的层束精细结构与物理属性研究[J].吉林大学学报(地球科学版),36(1):1-23.
Teng J W.2006.Research on layer-bundle fine structures and physical[J].Journal of Jilin University(Earth Science Edition),36(1):1-23.(in Chinese)
赵慈平,冉华,陈坤华.2011.腾冲火山区壳内岩浆囊现今温度:来自温泉逸出气体CO₂,CH₄间碳同位素分馏的估计[J].岩石学报,27(10):2883-2897.
Zhao C P,Ran H,Chen K H.2011.Present-day temperatures of magma chambers in the crust beneath Tengchong volcanic field,southwestern China:Estimation from carbon isotopic fractionation between CO₂ and CH₄ of free gases escaped from thermal springs[J].Acta Petrologica Sinica,27(10):2883-2897.(in Chinese)
Davydova N I,Kosminskaya I P,Kapustian N K,et al.1972.Models of the earth's crust and m-boundary [J].Geophys,38(3):369-393.
Ji S C,Wang Q,Salisbury M H.2009.Composition and tectonic evolution of the Chinese continental crust constrained by Poisson's ratio[J].Tectonophysics,463 15-30.
Levin V,Park J.1997.Crustal anisotropy in the Ural Mountains foredeep from teleseismic receiver functions[J].Geophysical Research Letters,24(11):1283-1286.
Li M K,Zhang S X,Wu T,et al.2018.Fine crustal and uppermost Mantle S-wave velocity structure beneath the Tengchong volcanic area inferred from receiver function and surface-wave dispersion:constraints on magma chamber distribution[J].Bulletin of Volcanology,80(3):25.
Liu Y,Yu Z,Zhang Z,et al.2023.The high-resolution community velocity model V2.0 of southwest China,constructed by joint body and surface wave tomography of data recorded at temporary dense arrays[J].Science China Earth Sciences,66(10):2368-2385.
Mansour W B,England R W,Fishwick S,et al.2018.Crustal properties of the northern Scandinavian mountains and Fennoscandian shield from analysis of teleseismic Receiver Functions[J].Geophysical Journal International,214(1):doi:10.1093/gji/ggy140.
Peng H C,J Badal,Hu J F,et al.2021.Lithospheric dynamics in the vicinity of the Tengchong volcanic field(southeastern margin of Tibet):an investigation using P receiver functions[J].Geophysical Journal International,224(2):1326-1343.
Shen W H,Liu S L,Yang D H,et al.2022.The crustal and uppermost Mantle dynamics of the Tengchong-Baoshan region revealed by P wave velocity and azimuthal anisotropic tomography[J].Geophysical Journal International,230(2):1092-1105.
Tian H,Yang W,Li S,et al.2018.Low δ26 Mg volcanic rocks of Tengchong in southwestern China:A deep carbon cycle induced by supercritical liquids[J].Geochimica et Cosmochimica Acta,240:191-219.
Wei Z G,Li Z W,Chen L,et al.2020.Crustal structure underneath central China across the Tibetan Plateau,the North China Craton,the South China Block and the Qinling-Dabie Orogen constrained by multifrequency receiver function and surface wave data[J].Journal of Asian Earth Sciences,202,doi:org/10.1016/j.jseaes.2020. 104535.
Zhu L P,Kanamori H.2000.Moho depth variation in southern California from teleseismic receiver functions[J].Journal of Geophysical Research:Solid Earth,105(B2):2969-2980.

Similar References:

Memo

Last Update: 2025-01-01