亚稳态橄榄石相变与深源地震研究进展

Abstract

Abstract: The phase transformation from olivine to spinel-phase can not take place because of lower temperature in the subducted slab at a depth of 400 km, and the olivine can be carried into the larger depth and becomes the metastable phase. According to the metastable olivine phase transformation faulting mechanism, deep-focus seismicity was triggered by anticrack formed in the superplastic lens-like spinel-phase. The depth is one of the most vital factors for phase transformation mechanism of the metastable olivine. Up to now what are the depths for metastable olivine existing are still an open question because of geothermal and compositional variations. Therefore, the results estimated from the different models are dissimilar. Some suggestions are proposed for solving the questions.

Key words: Metastable olivine, Metastable phase transformation, Deep-focus earthquake, High pressure and temperature

CLC Number:

P315.2

LIU Lei, DU Jian-guo, YI Li. An advance in metastable olivine phase transfor- mation and deep-focus seismicity[J]. EARTHQUAKE, 2007, 27(3): 41-49.

References

[1] Hobbs B E, Ord A. Plastic instabilities: Implications for the origin of intermediate and deep focus earthquakes^[J]. J Geophys Res, 1988, 93: 10521-10540.
[2] Griggs D T. High-pressure phenomena with applications to geophysics, in Moden physics for the engineer,edited by L N Ridenour[M]. New York: McGraw-Hill, 1954. 72-305.
[3] Griggs D. The sinking lithosphere and the focal mechanism of deep earthquakes, in The Norrrre of tlte Solid Emtlz, edited by E C Robertson[M]. New York: McGraw-Hill, 1972. 361-384.
[4] Griggs D, Handin J. Observations on fracture and a hypothesis of earthquakes[J]. Mem Geol Soc Am, 1960, 79: 347-373.
[5] Post R L Jr. High-temperature creep of Mt. Burnet dunite[J]. Tectonophysics, 1977, 42: 75-110.
[6] Griggs D T, Baker D W. The origin of deep-locus earthquakes, in Properties of Matter under unusual conditions[M]. New York: J Wiley, 1968. 23-42.
[7] Ogawa M. Shear instability in a visco-elastic material as the cause of deep-focus earthquakes[J]. J Geophys Res, 1987, 92: 13801-13810.
[8] Bridgman P W. Polymorphic transition and geological phenomenon[J]. Am J Sci, 1945, 247A: 90-97.
[9] Kirby S H. Localized polymorphic phase transformations in high-pressure faults and applications to the physical mechanism of deep earthquakes[J]. J Geophys Res, 1987, 92: 13789-13800.
[10] Liu L. Phase transformation, earthquakes and the descending lithosphere[J]. Phys Earth Planet Inter, 1983, 32: 226-240.
[11] Meade C, Jeanloz R. Acoustic emmissions and shear instabilities during phase transformation in Si and Ge at ultrahigh pressure[J]. Nature, 1989, 339: 616-618.
[12] Dennis J G, Walker C T. Earthquakes resulting metastable phase transitions[J]. Tectonophysics, 1965, 2: 401-407.
[13] Kawakatsu H. Insignificant isotropic component in the moment tensor of deep earthquakes[J]. Nature, 1991, 351: 50-53.
[14] Sykes L R. Deep earthquakes and rapidly-running phase changes: A reply to Dennis and Walker[J]. J Geophys Res, 1968, 73: 1508-1510.
[15] Green H W Ⅱ, Burnley P C. A new self-organizing mechanism for deep-focus earthquakes[J]. Nature, 1989, 341: 733-737.
[16] Green H W Ⅱ, YoungT E, Walker D. Anticrack-associated faulting at very high pressure in natural olivine[J]. Nature, 1990, 348: 720-722.
[17] Burnley P C, Green H W Ⅱ, Prior D. Faulting associated with the olivine to spinel transformation in Mg₂GeO₄ and its implications for deep-focus earthquakes[J]. J Geophys Res, 1991, 96: 425-443.
[18] Ringwood A E. Composition and petrology of the Earth′s mantle[J]. New York: MeGraw-Hill, 1975.
[19] Sung C M, Burns R G. Kinetics of the high-pressure phase transformations: Implications to the evolution of the olivine-spinel phase transition in the downgoing lithosphere and its consequences on the dynamics of the mantle[J]. Tectonophysics, 1976b, 31: 1-32.
[20] Sung, C M, Burns R G. Kinetics of the olivine-spinel transition: Implications to deep-focus earthquake genesis[J]. Earth Planet Sci Lett, 1976a, 32: 165-170.
[21] Kirby S H, Durham W B, Stem L A. Mantle phase changes and deep-earthquake faulting in subducting lithosphere[J]. Science, 1991, 52: 216-225.
[22] Kirby S H, Stein S, Okal E A. Metastable mantle phase transformation and deep earthquakes in subducting oceanic lithosphere[J]. Reviews of Geophysics, 1996, 4(2): 261-306.
[23] Rubie D C, Ross C R II. Kinetics of the olivine-spinel transformation in subducting lithosphere: experimental constraints and implications for deep slab processes[J]. Phys Earth Planet Inter, 1994, 86: 223-241.
[24] DBler R, Yuen D A, Karato S, et al. Two-dimensional thermo-kinetic model for the olivine-spinel phase transition in subducting slabs[J]. Phys Earth Planet Inter, 1996, 94: 217-239.
[25] Devaux J P, Schubert G, Anderson C. Formation of a metastable olivine wedge in a subducting slab[J]. J Geophys Res, 1997, 102: 24627-24637.
[26] Frohlich C. The nature of deep-focus earthquakes[J]. Ann Rev Earth Planet Sci, 1989, 17: 227-254.
[27] Iidaka T, Suetsugu D. Seismological evidence for metastable olivine inside a subducting slab[J]. Nature, 1992, 356: 593-595.
[28] Kope K D, Wiens D A. The wave guide effect of metastable olivine in slabs[J]. Geophys Res Lett, 2000, 27: 573-576.
[29] Koper K D, Wiens D A, Dorman L M, et al. Modeling the Tonga slab: can travel time data resolve a metastable olivine wedge[J]. J Geophys Res, 1998, 103: 30079-30100.
[30] Marton F, Shankland T J, Rubie D C, et al. Effects of variable thermal conductivity on the mineralogy of subducting slabs and implications for mechanisms of deep earthquakes[J]. Phys Earth Planet Inter, 2005, 149: 3-64.
[31] Mosenfelder J L, Marton F C, Ross, II C R, et al. Experimental constraints on the depth of olivine metastability in subducting lithosphere[J]. Phys Earth Planet Inter, 2001, 127: 165-180.
[32] Xu Y, Shankland T J, Linhardt S, et al. Thermal diffusivity and conductivity of olivine, wadsleyite and ringwoodite to 20 GPa and 1373 K[J]. Phys Earth Planet Inter, 2004, 143-144: 321-336.
[33] Stein C A, Stein S. A model for the global variation in oceanic depth and heat flow with lithospheric age[J]. Nature, 1992, 359: 123-129.
[34] Carminati E, Negredo A M, Valera J L, et al. Subduction-related intermediate-depth and deep seismicity in Italy: insights from thermal and rheological modeling[J]. Phys Earth Planet Inter, 2005, 149: 65-79.
[35] Hosoya T, Kubo T, Ohtani E, et al. Water controls the fields of metastable olivine in cold subducting slabs[J]. Geophys Res Lett, 2005, 32( L17305): 1-4.
[36] Vaisnys J R, Pilbeam C C. Deep-earthquake initiation by phase transformation[J]. J Geophys Res, 1976, 81: 985-988.
[37] McGarr A. Seismic moments of earthquakes beneath island arcs, phase change, and subduction velocities[J]. J Geophys Res, 1977, 82: 256-264.
[38] Fletcher R C, Pollard DD. Anticrack model for pressure solution surfaces[J]. Geology, 1981, 9: 419-421.
[39] Green H W Ⅱ, Scholz C H, TingleT N. Acoustic emissions produced by anticrack faulting during the olivine→spinel tranformation[J]. Geophys Res Lett, 1992a, 19: 789-792.
[40] Liu L. Phase transformation and deep-focus earthquakes[J]. Physica A, 1995, 221: 143-151.
[41] Green H W II, Y Zhou. Transformation-induced faulting requires an exothermic reaction and explains the termination of earthquakes at the base of the mantle transition zone[J]. Tectonophysics, 1996, 256: 39-56.
[42] Vaughan P J, Coe R S. Creep mechanism flow properties of the germanate analog of forsterite[J]. Techtonophysics, 1981, 86: 389-404.
[43] Kohlstedt D L, Keppler H, Rubie D C. Solubility of water in the α、 β and γ phases of (Mg, Fe)₂SiO₄[J]. Contrib Mineral Petrol, 1996, 123: 345-357.
[44] Bell D R, Rossman G R. Water in earth′s mantle: The role of nominally anhydrous minerals[J]. Science, 1992, 255: 1391-1397.
[45] 金日东, 金振民. 蛇纹石脱水与大洋俯冲带中源地震(70~300 km)的关系[J]. 地学前缘, 2006, 13: 191-204.
[46] ChenJ H, Inoue T, Yurimoto H, et al. Effect of water on olivine-wadsleyite phase boundary in the (Mg, Fe)₂SiO₄ system[J]. Geophys Res Lett, 2002, 29: 1-4.
[47] Rubie D C. The catalysis of mineral reactions by water and restrictions on the presence of aqueous fluid during metamorphism[J]. Mineral Ma, 1986, 50: 399-415.
[48] Kubo T, Ohtani E, Fujino K. Effects of water on the α-β transformation kinetics in San Carlos olivine[J]. Science, 1998, 281: 85-87.

An advance in metastable olivine phase transfor- mation and deep-focus seismicity

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments

[1]	LI Jian-jun, LI Wen-qiao, GONGQIU Zhuo-ma, SIJIN Luo-bu, CIREN Duo-ji, LI Jia-yi, ZHANG Jun-long. An Overview of Activity Rate Along the East Kunlun Fault Zone [J]. EARTHQUAKE, 2024, 44(1): 118-140.
[2]	ZHANG Jun-long, XU Yue-ren, LI Wen-qiao, CHEN Feng. Analysis of the Markers of Seismic Structures for Moderate Earthquakes: A Case Study of the 2023 Jishishan M_S6.2 Earthquake [J]. EARTHQUAKE, 2024, 44(1): 226-234.
[3]	FENG Jian-guo, ZHAO Yao, WANG Ji-qiang, GAO Zong-jun, WANG Hua-lin, GE Fu-gang. Study on Quaternary Activities Characteristics of the Mengshan Piedmont Fault [J]. EARTHQUAKE, 2023, 43(3): 66-76.
[4]	ZHANG Wen-peng, GAO Wu-ping, YAN Cheng-guo, LIN Yi. Study on the Structural Features of the Dasi Fault [J]. EARTHQUAKE, 2021, 41(3): 90-103.
[5]	DENG Hui, DONG Fei-fei, XIE Bin. Textual Research and Causative Structure of the Northern Xunwu Earthquake in Jiangxi Province on September 21, 1941 [J]. EARTHQUAKE, 2021, 41(3): 104-113.
[6]	DING Cheng, LI Jun-lun, WANG Xiao-shan, TAN Yu-yang, ZHANG Hai-jiang. Full-waveform Based Focal Mechanism Inversion for Earthquakes of Small and Moderate Magnitude in the Capital Region [J]. EARTHQUAKE, 2020, 40(4): 1-22.
[7]	WANG Ji-qiang, WANG Dong-lei, LU Zi-lin, ZHANG Jian-min. The Surface Rupture Characteristics and Latest Activities of the Shuangshan—Lijiazhuang Fault [J]. EARTHQUAKE, 2020, 40(4): 115-128.
[8]	ZHANG Jun-long, TIAN Qin-jian, LI Feng GAO, Zhan-wu, SU Gang. Study on neotectonic characteristics and its evolution in northwestern Hainan Island [J]. EARTHQUAKE, 2008, 28(3): 85-94.
[9]	HAO Kai, TIAN Qin-jian, TAI Ling-xue, ZHANG Jun-long. Study of the activity of Lintong-Chang'an fault [J]. EARTHQUAKE, 2008, 28(3): 110-114.
[10]	ZHANG Jun-long, TIAN Qin-jian, LI Zhi-min, Ren Zhi-kun, HAO Kai. Use of differential GPS in detecting active faults in cities [J]. EARTHQUAKE, 2007, 27(3): 74-82.
[11]	REN Zhi-kun, TIAN Qin-jian, ZHANG Jun-long. Micro geomorphology of Zemuhe Fault surveyed by virtue deferential GPS [J]. EARTHQUAKE, 2007, 27(3): 97-104.
[12]	CHEN Zheng-wei, XIE Ping, SHEN Xu-hui, CAO Zhong-quan, HONG Shun-ying, JING Feng. Evolution of Relong Basin in southern Tibet controlled by both tectonics and climate since mid-Pleistocene [J]. EARTHQUAKE, 2007, 27(3): 131-138.
[13]	CHEN Guo-hu, SHAN Xin-jian, LI Jian-hua. A study on fault activity of Ningbo region based on satellite images [J]. EARTHQUAKE, 2007, 27(2): 131-138.
[14]	ZHENG Wen-jun, LEI Zhong-sheng, YUAN Dao-yang HE Wen-gui, GE Wei-peng, LIU Xing-wang. Structural research on the 1837 northern Minxian M6 earthquake in Gansu Province and its causative structure [J]. EARTHQUAKE, 2007, 27(1): 120-130.
[15]	ZHANG Xin-ji, ZHANG Hui, SU He-jun, LIU Xu-zhou. Geochemical feature of radon and mercury across Liujiapu active fault [J]. EARTHQUAKE, 2005, 25(4): 87-92.