Constraining the composition, density and thermal state of the lithospheric mantle of the Siberian craton from inversion of seismic data
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| Published in: | Геофизический журнал |
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| Date: | 2010 |
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| Format: | Article |
| Language: | English |
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Інститут геофізики ім. С.I. Субботіна НАН України
2010
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| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/101638 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Constraining the composition, density and thermal state of the lithospheric mantle of the Siberian craton from inversion of seismic data / O. Kuskov, V. Kronrod, A. Prokofyev // Геофизический журнал. — 2010. — Т. 32, № 4. — С. 75. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1860238490921336832 |
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| author | Kuskov, O. Kronrod, V. Prokofyev, A. |
| author_facet | Kuskov, O. Kronrod, V. Prokofyev, A. |
| citation_txt | Constraining the composition, density and thermal state of the lithospheric mantle of the Siberian craton from inversion of seismic data / O. Kuskov, V. Kronrod, A. Prokofyev // Геофизический журнал. — 2010. — Т. 32, № 4. — С. 75. — англ. |
| collection | DSpace DC |
| container_title | Геофизический журнал |
| first_indexed | 2025-12-07T18:27:27Z |
| format | Article |
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Constraining the composition, density and thermal state of
the lithospheric mantle of the Siberian craton
from inversion of seismic data
O. Kuskov, V. Kronrod, A. Prokofyev, 2010
Institute of Geochemistry and Analytical Chemistry, RAS, Moscow, Russia
ol_kuskov@mail.ru
Quantitative estimation of the temperature dis- tribution in the Earth’s mantle is a key problem in
petrology and geophysics. In this study, we discuss
the method of estimating temperature, composition,
density and thickness of the subcontinental litho-
spheric mantle beneath the Siberian craton from ab-
solute seismic velocities. The phase composition
and physical properties of the lithospheric mantle
were modelled within the Na2O-TiO2-CaO-FeO-MgO-
Al2O3-SiO2 system including the non-ideal solid so-
lution phases. For the computation of the phase
diagram for a given chemical composition, we have
used a method of minimization of the total Gibbs
free energy combined with a Mie-Grüneisen equa-
tion of state. Our forward calculation of phase dia-
gram, seismic velocities and density and inverse
calculation of temperature includes anharmonic and
anelastic parameters as well as mineral reaction
effects, including modes and chemical compositions
of coexisting phases. Sensitivity of density and ve-
locities to temperature, pressure and composition was
studied. Inverse code computes the temperature dis-
tribution in the upper mantle from seismic and com-
positional constraints. The output results contain the
self-consistent information on phase assemblages,
densities and velocities. The approach used here re-
quires a small number of thermodynamically defined
parameters and has important advantages over earlier
procedures, which contain no information about en-
tropy, enthalpy and Grüneisen parameter. We inver-
ted for temperature the recent velocity models of the
Siberian craton as well as the IASP91 reference Earth
model. Several long-range seismic profiles were car-
ried out in Russia with Peaceful Nuclear Explosions
(PNE). The velocity models from PNEs recorded along
these profiles were used to infer upper mantle tempe-
rature profiles beneath the Siberian craton. The seis-
mic profiles were inverted on the basis of low and high
temperature xenoliths of garnet peridotites from kim-
berlite pipes of the cratons in order to gain insights
into the temperature sensitivity to variations in the
composition and mineralogy of xenoliths. Such a test
can provide constraints on the compositional (vertical
and lateral) heterogeneity of the upper mantle. 1D and
2D thermal and density profiles of the lithospheric
mantle for the Siberian craton are discussed. We de-
rive a lithosphere thickness of roughly 300 km for the
Siberian craton by the intersection of the calculated
temperature profile in the conductive region with the
potential mantle adiabat.
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| id | nasplib_isofts_kiev_ua-123456789-101638 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0203-3100 |
| language | English |
| last_indexed | 2025-12-07T18:27:27Z |
| publishDate | 2010 |
| publisher | Інститут геофізики ім. С.I. Субботіна НАН України |
| record_format | dspace |
| spelling | Kuskov, O. Kronrod, V. Prokofyev, A. 2016-06-06T13:16:58Z 2016-06-06T13:16:58Z 2010 Constraining the composition, density and thermal state of the lithospheric mantle of the Siberian craton from inversion of seismic data / O. Kuskov, V. Kronrod, A. Prokofyev // Геофизический журнал. — 2010. — Т. 32, № 4. — С. 75. — англ. 0203-3100 https://nasplib.isofts.kiev.ua/handle/123456789/101638 en Інститут геофізики ім. С.I. Субботіна НАН України Геофизический журнал Constraining the composition, density and thermal state of the lithospheric mantle of the Siberian craton from inversion of seismic data Article published earlier |
| spellingShingle | Constraining the composition, density and thermal state of the lithospheric mantle of the Siberian craton from inversion of seismic data Kuskov, O. Kronrod, V. Prokofyev, A. |
| title | Constraining the composition, density and thermal state of the lithospheric mantle of the Siberian craton from inversion of seismic data |
| title_full | Constraining the composition, density and thermal state of the lithospheric mantle of the Siberian craton from inversion of seismic data |
| title_fullStr | Constraining the composition, density and thermal state of the lithospheric mantle of the Siberian craton from inversion of seismic data |
| title_full_unstemmed | Constraining the composition, density and thermal state of the lithospheric mantle of the Siberian craton from inversion of seismic data |
| title_short | Constraining the composition, density and thermal state of the lithospheric mantle of the Siberian craton from inversion of seismic data |
| title_sort | constraining the composition, density and thermal state of the lithospheric mantle of the siberian craton from inversion of seismic data |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/101638 |
| work_keys_str_mv | AT kuskovo constrainingthecompositiondensityandthermalstateofthelithosphericmantleofthesiberiancratonfrominversionofseismicdata AT kronrodv constrainingthecompositiondensityandthermalstateofthelithosphericmantleofthesiberiancratonfrominversionofseismicdata AT prokofyeva constrainingthecompositiondensityandthermalstateofthelithosphericmantleofthesiberiancratonfrominversionofseismicdata |