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dc.contributor.authorGladkochub, D.
dc.contributor.authorDonskaya, T.
dc.contributor.authorIvanov, A.
dc.contributor.authorErnst, R.
dc.contributor.authorMazukabzov, A.
dc.contributor.authorPisarevsky, Sergei
dc.contributor.authorUkhova, N.
dc.date.accessioned2017-01-30T14:56:17Z
dc.date.available2017-01-30T14:56:17Z
dc.date.created2015-03-03T20:17:52Z
dc.date.issued2010
dc.identifier.citationGladkochub, D. and Donskaya, T. and Ivanov, A. and Ernst, R. and Mazukabzov, A. and Pisarevsky, S. and Ukhova, N. 2010. Phanerozoic mafic magmatism in the southern Siberia craton: geodynamic implications. Russian Geology and Geophysics. 51 (9): pp. 952-964.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/41908
dc.identifier.doi10.1016/j.rgg.2010.08.005
dc.description.abstract

The Phanerozoic history of mafic magmatism in the southern Siberian craton included three major events. The earliest event (∼500 Ma) recorded in dolerite dikes occurred during accretion and collision at the early stage of the Central Asian orogen. Injection of mafic melts into the upper crust was possible in zones of diffuse extension within the southern Siberian craton which acted as an indenter. The Late Paleozoic event (∼275 Ma) produced dikes that intruded in a setting of subduction-related extension at the back of the active continental margin of Siberia during closure of the Mongolia–Okhotsk ocean, as well as slightly older volcanics (290 Ma) in the Transbaikalian segment of the Central Asian orogen. Early Mesozoic magmatism in the southern Siberian craton resulted in numerous 240–250 Ma mafic intrusions in the Angara–Taseeva basin. The intrusions (Siberian traps) appeared as the subducting slab of the Mongolia–Okhotsk ocean interacted with a lower mantle plume. The post-Late Paleozoic ages of flood basalts (290–275 Ma) correspond to progressive northwestward (in present coordinates) motion of the slab beneath the southern craton margin which likely ceased after the slab had reached the zone of the Siberian superplume. Since its consolidation after the Early Mesozoic activity, the crust in the area has no longer experienced extension favorable for intrusion of basaltic magma.

dc.publisherELSEVIER SCIENCE BV
dc.titlePhanerozoic mafic magmatism in the southern Siberia craton: geodynamic implications
dc.typeJournal Article
dcterms.source.volume51
dcterms.source.number9
dcterms.source.startPage952
dcterms.source.endPage964
dcterms.source.issn10687971
dcterms.source.titleRussian Geology and Geophysics
curtin.accessStatusFulltext not available


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