Velocity sections of the upper mantle under the oceans

V.V. Gordienko, L.Ya. Gordienko

Abstract


We constructed the models of the distribution of longitudinal seismic waves velocities for the upper mantle oceanic regions: mid-ocean ridges (MOR), basins, trenches, island arcs and coastal ridges, back-arc troughs (BAT). They are in line with the schemes of advection-polymorphic deepseated processes in tectonosphere. Under the island arcs and coastal ridges models meet the alpine geosyncline supplemented with recent activization. Under the MOR and BAT the models coincide. They correspond to the scheme of recent heat and mass transfer for rifting which on the mafic crust with continental thickness leads to oceanization. The basin model shows the result of smoothing of thermal anomalies under the MOR or BAT in about 50 100 million years. The trench model corresponds to the result of lateral warming-up of upper layers of the mantle of the inactive blocks from the island arc and basin

Keywords


oceans; upper mantle; velocity models; deep-seated processes

References


Boldyrev S. A., 1986. Mantle heterogeneity of active margins of the oceans. In: Structure and dynamics of the transition zones from a continent to an ocean. Moscow: Nauka, P. 43—50 (in Russian)

Buryanov V. B., Gordienko V. V., Zavgorodnyaya O. V., Kulik S. N., Logvinov I. M., 1985. Geophysical model of Ukrainian tectonosphere. Kiev: Naukova Dumka, 212 p. (in Russian)

Geochemistry of deep volcanic rocks and xenoliths, 1980. Ed. V. S. Sobolev. Moscow: Nauka, 332 p. (in Russian)

Gontovaya L. I., Gordienko V. V., 2006. Deep processes and geophysical models of the mantle of Eastern Kamchatka and Kronotskii Bay. Geologiya i poleznye iskopayemye Mirovogo okeana (2), 107—121 (in Russian)

Gordienko V. V., 2010. On the nature of anomalies velocity of longitudinal seismic waves in the upper mantle. Geofizicheskiy zhurnal 32(3), 43—63 (in Russian)

Gordienko V. V., 2012. Processes in the Earth tectonosphere (advection-polymorphic hypothesis). Saarbrücken: LAP, 256 p. (in Russian)

Gordienko V. V., Gordienko L. Ya., 2013a. On the PT-conditions in the mantle magma chambers beneath the Atlantic Ocean. Geologiya i poleznye iskopayemye Mirovogo okeana (4), 63—78 (in Russian)

Gordienko V. V., Gordienko L. Ya., 2013b. On the PT-conditions in the mantle magma chambers beneath the Pacific Ocean. Geologiya i poleznye iskopayemye Mirovogo okeana (2), 47—63 (in Russian)

Moroz Yu. F., 2009. Deep conductivity of volcanic zones of Kamchatka. In: Electromagnetic study of the Earth. Moscow: Publ. House of the IPE RAS, P.157 (in Russian)

Nazarova Z. A., Droznina S. Ya., Senyukov S. L., Droznin D. V., 2010. Determination of the earthquakes centers’ position in Kamchatka region. In: Problems of complex geophysical monitoring the Russian Far East. Petropavlovsk-Kamchatski: Publ. House of the FEB RAS, P. 363—366 (in Russian)

Nizkous I. V., Kissling E., Sanina I. A., Gontovaya L. I., 2006. Velocity properties of the transition zone’s lithosphere in the Kamchatka ocean-continent region according to seismic tomography. Fizika Zemli (4), 18—29 (in Russian)

Report "Development of scientific bases for complex seismic monitoring system in the Kuril-Kamchatka region", 2008. Head L. I. Lobkovskiy Moscow: Publ. House of the IO RAS, 95 p. (in Russian)

Pavlenkova N. I., Pogrebitskiy Yu. E., Romanyuk T. V., 1993. Seismic-dencity model of South Atlantic crust and upper mantle along Angol-Brasil geotravers. Fizika Zemli (10), 27—38 (in Russian)

Petrological province Pacific, 1996. Ed. I. N. Govorov. Moscow: Nauka, 439 p. (in Russian)

Ringwood A., 1981. Composition and petrology of the Earth's mantle. Moscow: Nedra, 583 p. (in Russian)

Tarakanov R. Z., 2006. Velocity models and P-wave travel time curves for the Far East region. Vestnik DVO RAN (1), 81—95 (in Russian)

Tectonosphere of the Asia Pacific margin, 1992. Ed. K. F. Sergeev. Vladivostok: Publ. House of the FEB RAS, 238 p. (in Russian)

Udintsev G. B., 1987. Relief and structure of the ocean floor. Moscow: Nauka, 340 p. (in Russian)

Frolova T. I., Perchuk L. L., Burikova I. A., 1989. Magmatism and crustal transformation of active margins. Moscow: Nedra, 260 p. (in Russian)

Erlikh E. N., 2011. Essays of Geology island arcs. google.com/site/geotermiakuril (in Russian)

Aoki H., Tada T., Sasaki Y., Ooida T., Muramatsu Y., Shimamura H., Furuya I., 1972. Crustal structure in the profile across central Japan as derived from explosion seismic observation. J. Phys. Earth 20, 197—223

Boyd F., 1989. Compositional distinction between oceanic and cratonic lithosphere. Earth Planet. Sci. Lett. 96(1/2), 16—26

Brown J., Shankland T., 1981. Thermodynamic properties in the earth as determined from seismic profiles. Geophys. J. Roy. Astron. Soc. (66), 579—596

Chu R., Schmandt B., Helmberger V., 2012. Juan de Fuca subduction zone from a mixture of tomography and wave form modeling. J. Geophys. Res. 117, B03304

Feng M., Lee S., Assumpcao M., 2007. Upper mantle structure of South America from joint inversion of waveforms and fundamental mode group velocities of Rayleigh waves. J. Geophys. Res. 112, B04312. doi:10.1029/2006JB004449

Flanagan M., Shearer P., 1999. A map of topography on the 410-km discontinuity from PP precursors. Geophys. Res. Lett. 26(5), 549—552

Fukao Y., 1977. Upper mantle P-structure on the ocean side of the Japan-Kurile arc. Geophys. J. Roy. Astron. Soc. 50, 621—642

Gordienko V., 2016. Deep-seated processes in the tectonosphere of geosynclines. NCGT Jounal 1, 6—31

Gordienko V., 2015. Essential points of the advection-polymorphism hypothesis. NCGT Jounal 3(2), 115—136

Gudmundsson O., Sambridge M., 1998. A regionalized upper mantle (RUM) seismic model. J. Geophys. Res. 102, B4, 7121—7126

Harley S., 1989. The origin of granulites: a metamorphic perspective. Geol. Mag. 126(3), 215—247

Helffrich G., 2000. Topography of the transition zone seismic discontinuities. Rev. Geophys. 38(1), 141—158

Irifune T., 1987. An experimental investigation of the pyroxene-garnet transformation in a pyrolite composition and its bearing on the construction of the mantle. Phys. Earth Planet. Int. 45, 324—336

Iwasaki T., Levin V., Nikulin A., Iidaka T., 2013. Constraints on the Moho in Japan and Kamchatka. Tectonophysics 609, 184—201

Jiang G., Zhao D., Zhang G., 2009. Seismic tomography of the Pacific slab edge under Kamchatka. Tectonophysics 465, 190—203

Karato S.-I., 1993. Importance of anelasticity in the interpretation of seismic tomography. Geophys. Res. Lett. 20, 1623—1626

Kennett B., Engdahl E., Buland R., 1995. Constraints on seismic velocities in the Earth from travel times. Geophys J. Int. 122, 108—124

Pavlenkova G. A., Pavlenkova N. I., 2006. Upper mantle structure of Northern Eurasia from peaсefull nuclear explosion data. Tectonophysics 416, 33—52

Romanowicz B., 2003. Global mantle tomography: progress status in the past 10 years. Ann. Rev. Earth Planet Sci. 31, 303—328

Usami T., Mikumo T., Shima E., Tamaki I., Asano S., Asada T., Matsuzawa T., 1958. Crustal structure in northern Kwanto district by explosion-seismic observations. Part II. Models of crustal structure. Bull. Earthq. Res. Inst. 36, 349—357

Yamasaki A., Hirahara K., 1996. The upper mantle P-wave velocity structure beneath the northern Japan Arc. J. Phys. Earth 44(6), 713—728

Yoshii T., Sasaki T., Tada T., Okada H., Asano S., Muramatu I., Hashizume M., Moriya T., 1974. The third Kurayoshi explosion and crustal structure in the western part of Japan. J. Phys. Earth 22, 109—121

Walck M., 1985. The upper mantle beneath the north-east Pacific rim: a comparison with the Gulf of California. Geophys. J. Roy. Astron. Soc. 81, 243—276

Zhao Z., Kubota R., Suzuki F., Iizuka S., 1997. Crustal structure in the Southern Kanto-Tokai region derived from tomographic method for seismic explosion survey. J. Phys. Earth 45, 433—453

Zhao M., Langston C., Nyblade A., Owens T., 1999. Upper mantle velocity structure beneath southern Africa from modelling regional seismic data. J. Geophys. Res. 104, B3, 4783—4794




DOI: https://doi.org/10.24028/gzh.0203-3100.v38i6.2016.91964

Refbacks

  • There are currently no refbacks.