收稿日期: 2004-04-09
修回日期: 2004-04-19
网络出版日期: 2004-06-01
THE RELATIONSHIP BETWEEN THE ORIGIN OF THE INTRAPLTE CHANGBAI VOLCANO AND THE SUBDUCTING PACIFIC SLAB
Received date: 2004-04-09
Revised date: 2004-04-19
Online published: 2004-06-01
赵大鹏 , 雷建设 . 长白山火山的起源和太平洋俯冲板块之间的关系[J]. 地球科学进展, 2004 , 19(3) : 364 -367 . DOI: 10.11867/j.issn.1001-8166.2004.03.0364
We used global seismic tomography and regional tomography to study the deep structure and origin of the Changbai intraplate volcano in Northeast China. Our results reveal a lowvelocity anomaly extending to 400 km with a velocity reduction of up to 4%. High velocity anomalies are visible in the mantle transition zone, and deepfocus earthquakes occur at depths down to 600 km under the region,suggesting that the subducting Pacific slab is stagnant in the mantle transition zone under Northeast Asia.These results suggest that the intraplate Changbai volcano is not a hotspot like Hawaii but a kind of backarc volcano related to the deep subduction and stagnancy of the Pacific slab under Northeast Aisa.
[1]Liu Ruoxin(刘若新). Chinese Active Volcanoes [M]. Beijing: Seismological Press, 2000. 11-44（in Chinese）.
[2]Simkin T, Siebert L. Volcanoes of the World [M]. Washington DC: Geoscience Press, 1994. 111-111(in Chinese).
[3]Tang Ji (唐吉), Deng Qianhui (邓前辉), Zhao Guoze (赵国泽), et al. Electric conductivity and magma chamber at the Tianchi volcano area in Changbaishan mountain [J]. Seismology and Geology(地震地质), 2001, 23 (2): 191-200(in Chinese).
[4]Zhang Chengke (张成科), Zhang Xiankang (张先康), Zhao Jinren (赵金仁), et al. Study on the crustal and upper mantle structure in the Tianchi volcanic region and its adjacent area of Changbaishan[J]. Chinese Journal of Geophysics(地球物理学报), 2002, 45 (6): 862-871(in Chinese).
[5]Turcotte D, Schubert G. Geodynamics, Applications of Continuum Physics to Geological Problems [M]. New York: John Wiley and Sons Press, 1982. 44-44.
[6]Zhao D, Lei J. Seismic ray path variations in a 3-D global velocity model [J]. Physics of Earth and Planetary Interiors,2004, 141: 153-166.
[7]Zhao D. Seismic structure and origin of hotspots and mantle plumes [J]. Earth and Planetary Science Letters, 2001,192: 251-265.
[8]Zhao D, Hasegawa A, Kanamori H. Deep structure of Japan subduction zone as derived from local, regional, and teleseismic events[J]. Journal of Geophysical Research, 1994, 99: 22 313-22 329.
[9]Zhao D, Xu Y, Wiens D, et al. Depth extent of the Lau back-arc spreading center and its relation to subduction processes [J]. Science, 1997, 278: 254-257.
[10]Zhou H. A high-resolution P wave model for the top 1 200 km of the mantle[J]. Journal of Geophysical Research, 1996, 101: 27 791-27 810.
[11]Bijwaard H, Spakman W, Engdahl E R. Closing the gap between regional and global travel time tomography[J]. Journal of Geophysical Research, 1998, 103: 30 055-30 078.
[12]Fukao Y, Widiyantoro S, Obayashi M. Stagnant slabs in the upper mantle transition region [J]. Reviews of Geophysics, 2001, 39: 291-323.
[13]Wu F, Hetland E. The Changbaishan, China, PASSCAL experiment [A]. In: 21st Seismic Reseach Symposium: Technologies for Monitorying the Comprehensive Nuclear-Test-Ben Treaty[C]. Las Vegas,NV, USA, 1999.
[14]Ai Y, Zheng T, Xu W, et al. A complex 660 km discontinuity beneath northeast China [J].Earth and Planetary Science Letters, 2003, 212: 63-71.
[15]Li X, Yuan X. Receiver functions in northeast China-implications for slab penetration into the lower mantle in northwest Pacific subduction zone [J]. Earth and Planetary Science Letters, 2003, 216: 679-691.
[16]Tatsumi Y, Maruyama S, Nohda S. Mechanism of backarc opening in the Japan Sea: Role of asthenospheric injection [J]. Tectonophysics, 1990, 181: 299-306.
[17]Yin A. Mode of Cenozoic east-west extension in Tibet suggesting a common origin of rifts in Asia during the Indo-Asian collision [J]. Journal of Geophysical Research, 2000, 105: 21 745-21 760.
[18]Wolfe C, Bjarnason I, VanDecar J, et al. Seismic structure of the Iceland mantle plume[J]. Nature, 1997, 385: 245-247.
[19]Ritter J, Jordan M, Christensen U, et al. A mantle plume below the Eifel volcanic fields, Germany [J].Earth and Planetary Science Letters, 2001, 186: 7-14.
[20]Stein S, Freymueller J. Plate boundary zone [M]. Washington DC: America Geophysical Union, 2002.1-26.
/
| 〈 |
|
〉 |
甘公网安备62010202000687
