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地球科学进展  2013, Vol. 28 Issue (9): 997-1006    DOI: 10.11867/j.issn.1001-8166.2013.09.0997
造山带与地壳演化教育部重点实验室,北京大学地球与空间科学学院,北京 100871
The Advance of Petrologic Mechanism of Dehydration Embrittlement in Intermediate-depth Earthquakes
Xia Yang, Zhang Lifei
Key Laboratory of Orogenic Belts and Crustal Evolution, MOE, School of Earth and Space Sciences, Peking University, Beijing 100871, China
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关键词: 中源地震脱水脆变机制古俯冲带野外地震证据    

The mechanisms of intermediatedepth earthquakes were always attracting extensive researches of interest. Among various hypotheses about the mechanisms, the close relationship between the dehydration embrittlement and earthquakes is generally accepted. The intermediate-depth earthquakes in subducting slabs occur mainly in two distinct layers, corresponding with the dehydration respectively in the hydrous meta-basalts and the serpentinite layers. In the past decades, theory researches, interpretations of seismic data and laboratory experiments have been widely adopted as the major approaches to attest the hypothesis of dehydration embrittlement. However, in the latest ten years, pseudotachylytes and some brittle structures have been discovered in paleo-subduction zones like Alps, shedding a light for a new way to study intermediate-depth earthquakes.

Key words: Intermediate-depth Earthquakes    Dehydration Embrittlement    Paleo-subduction Zones    Field Evidence
收稿日期: 2013-05-09 出版日期: 2013-09-10
:  P315.3+3  


通讯作者: 张立飞(1963-),男,吉林梨树人,教授,主要从事变质地质学研究     E-mail: 张立飞
作者简介: 夏阳(1987-),男,安徽巢湖人,硕士研究生,主要从事变质地质学研究
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夏阳,张立飞. 中源地震脱水脆变机制的岩石学研究进展[J]. 地球科学进展, 2013, 28(9): 997-1006.

Xia Yang, Zhang Lifei. The Advance of Petrologic Mechanism of Dehydration Embrittlement in Intermediate-depth Earthquakes. Advances in Earth Science, 2013, 28(9): 997-1006.


[1]Gutenberg B, Richter C F. Seismicity of the Earth and Related Phenomena[M]. Princeton NJ: Princeton University Press, 1954: 310.

[2]Scholz C H. The Mechanics of Earthquakes and Faulting[M]. Cambridge UK: Cambridge University Press, 2002.

[3]Frohlich C. The nature of deep-focus earthquakes[J]. Annual Review of Earth and Planetary Sciences, 1989, 17: 227-254.

[4]Peacock S M. Are the lower planes of double seismic zones caused by serpentine dehydration in subducting oceanic mantle?[J].Geological Society of America, 2001,29: 299-302.

[5]Jung H, Green H W, Dohrzhinetskaya L F. Intermediate-depth earthquake faulting by dehydration embrittlement with negative volume change[J]. Nature, 2004, 428: 545-549.

[6]Hasegawa A, Nakajima J, Uchida N, et al. Plate subduction, and generation of earthquakes and magmas in Japan as inferred from seismic observations: An overview[J]. Gondwana Research, 2009, 16: 370-400.

[7]Davies J H. The role of hydraulic fractures and intermediate-depth earthquakes in generating subduction-zone magmatism[J]. Nature, 1999, 398: 142-145.

[8]Hacker B R, Peacock S M, Abers G A, et al. Subduction factory 2. Are intermediate-depth earthquakes in subducting slabs linked to metamorphic dehydration reactions?[J]. Journal of Geophysical Research, 2003, 108: 1-16.

[9]Barcheck C G, Wiens D A, van Keken P E, et al. The relationship of intermediate-and deep-focus seismicity to the hydration and dehydration of subducting slabs[J]. Earth and Planetary Science Letters, 2012, 349: 153-160.

[10]Raleigh C B, Paterson M S. Experimental deformation of serpentine and its tectonic implications[J]. Journal of Geophysical Research, 1965, 70: 3 965-3 985.

[11]Green H W, Houston H. The mechanics of deep earthquakes[J]. Annual Review of Earth and Planet Sciences, 1995, 23: 169-213.

[12]Kirby S H, Engdahl E R, Denlinger R. Intermediate-depth Intraslab Earthquakes and Arc Volcanism as Physical Expressions of Crustal and Uppermost Mantle Metamorphism in Subducting Slabs[C]∥Bebout G E, et al, eds. Subduction Top to Bottom, Geophysical Monograph Serial. Washington DC: AGU, 1996, 96: 195-214.

[13]Kirby S H. Interslab earthquakes and phase changes in subducting lithosphere[J]. Reviews of Geophysics, 1995, 33: 287-297.

[14]Tao W C, Oconnel R J. Deformation of a weak subducted slab and variation of seismicity with depth[J]. Nature, 1993, 361: 626-628.

[15]Vassiliou M S, Hager B H. Subduction zone earthquakes and stress in slabs[J]. Pure and Applied Geophysics, 1988, 128(3/4): 547-624.

[16]Peacock S M. Fluid process in subduction zones[J]. Science, 1990, 248: 329-337.

[17]Ko S Z, Olgaard D L, Wong T F. Generation and maintenance of pore pressure excess in a dehydration system, 1, Experimental and micro-structural observation[J]. Journal of Geophysical Research, 1997, 102: 825-839.

[18]Miller S A, van der Zee W, Olgaard D L, et al. A fluid-pressure feedback model of dehydration reactions: Experiments, modelling, and application to subduction zones[J]. Tectonophysics, 2003, 370: 241-251.

[19]Jiao W, Silver P G, Fei Y, et al. Do intermediate- and deep-focus earthquakes occur on preexisting weak zones? An examination of the Tonga subduction zone[J]. Journal of Geophysical Research, 2000, 105: 28 125-28 138.

[20]Hubbert M K, Rubey W W. Role of fluid pressure in mechanics of overthrust faulting Ι: Mechanics of fluid-filled porous solids and its application to overthrust faulting[J]. Geological Society of American Bulletin, 1959, 70: 115-206.

[21]Schmidt M W, Poli S. Experimentally based water budgets for dehydrating slabs and consequences for arc magma generation[J]. Earth and Planetary Science Letters, 1998, 163: 361-379.

[22]Okamoto K, Maruyama S. The high-pressure synthesis of lawsonite in the MORB+H2O system[J]. American Mineralogist, 1999, 84: 362-373.

[23]Omori S, Kamiya S, Maruyama S, et al. Morphology of the intraslab seismic zone and devolatilization phase equilibria of the subducting slab peridotite[J]. Bulletin of Earthquake Research Institute, 2002, 76: 455-478.

[24]Omori S, Komabayashi T, Maruyama S. Dehydration and earthquakes in the subducting slab: Empirical link in intermediate and deep seismic zones[J]. Physics of the Earth and Planetary Interiors, 2004, 146: 297-311.

[25]Yamasaki T, Seno T. Double seismic zone and dehydration embrittlement of the subducting slab[J]. Journal of Geophysical Research, 2003, 108, doi: 10.1029/2002JB001918.

[26]Peacock S M, Wang K. Seismic consequences of warm versus cool subduction metamorphism: Examples from Southwest and Northeast Japan[J]. Science, 1999, 286: 937-939.

[27]Raleigh C B. Tectonic implications of serpentinite weakening[J]. Geophysical Journal of the Royal Astronomical Society, 1967, 14(14): 113-118.

[28]Murrell S A F, Ismail I A H. The effect of decomposition of hydrous minerals on the mechanical properties of rocks at high pressures and temperatures[J]. Tectonophysics, 1976, 31: 207-258.

[29]Kirby S H. Localized polymorphic phase transitions in high-pressure faults and applications to the physical mechanism of deep earthquakes[J]. Journal of Geophysical Research, 1987, 92: 13 789-13 800.

[30]Rutter E H, Brodie K. Experimental “syntectonic” dehydration of serpentinites under conditions of controlled pore water pressure[J]. Journal of Geophysical Research, 1988, 93: 4 907-4 932.

[31]Dobson D P, Meredith P G, Boon S A. Simulation of subduction zone seismicity by dehydration of serpentine[J]. Science, 2002, 298: 1 407-1 410.

[32]Hacker B R, Christie J M. Brittle/ductile and plastic/cataclastic transitions in experimentally deformed and metamorphosed amphibolite[M]∥Duba A G, Purham W B, Handin J W, et al, eds. The Brittle-Ductile Transition in Rock.Washington DC: American Geophysical Union, 2013.

[33]Heard H C, Rubey W W. Tectonic implication of gypsum dehydration[J]. Geological Society of American Bulletin, 1966, 77: 741-760.

[34]Zhang J F, Green H W, Bozhilov K. Faulting induced by precipitation of water at grain boundaries in hot subducting oceanic crust[J]. Nature, 2004, 428: 633-636.

[35]Austrheim H, Boundy T M. Pseudotachylytes generated during seismic faulting and eclogitization of the deep crust[J]. Science, 1994, 265: 82-83.

[36]Liu Jianmin, Dong Shuwen. Advance and status quo of the research on pseudotachylytes[J]. Geological Review, 2001, 47(1): 64-69.[刘建民, 董树文. 假玄武玻璃的研究进展与现状[J]. 地质评论,2001,47(1):64-69.]

[37]Lund M G, Austrheim H. High-pressure metamorphism and deep-crustal seismicity: Evidence from contemporaneous formation of pseudotachylytes and eclogite facies coronas[J]. Tectonophysics, 2003, 372: 59-83.

[38]John T, Schenk V. Interrelations between intermediate-depth earthquakes and fluid flow within subducting oceanic plates: Constraints from eclogite facies pseudotachylytes[J]. Geological Society of America, 2006, 34: 557-560.

[39]Angiboust S, Agard P, Yamato P, et al. Eclogite breccias in a subducted ophiolite: A record of intermediate-depth earthquakes[J]. Geology, 2012, 40: 707-710.

[40]Francis T J G. Serpentinization faults and their role in the tectonics of slow spreading ridges[J]. Journal of Geophysical Research, 1981, 86: 11 616-11 622.

[41]Seno T, Yamanaka Y. Double Seismic zones, compressional deep trench-outerrise events, and superplumes[C]∥Bebout G E, Scholl D W, Kirby S H,et al, eds.Subduction: Top to Bottom.  Washington DC: American Geophysical Union,  1996, 96: 347-355.

[42]King S D. Subduction zones: Observations and geodynamic models[J]. Physics of the Earth and Planetary Interiors, 2001, 127: 9-24.

[43]Peacock S M. The importance of blueschist-eclogite dehydration reactions in subducting oceanic crust[J]. Geological Society of America Bulletin, 1993, 105: 684-694.

[44]Hacker B R, Abers G A, Peacock S M. Subduction factory 1. Theoretical mineralogy, densities, seismic wave speeds, and H2O contents[J]. Journal of Geophysical Research, 2003, 108,(B1): 2 029, doi: 10. 1029/2001JB001127.

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