Dynamics of metasomatic transformation of the rocks of the lithospheric mantle and Earth’s crust in deep-fault zones controlling the Siberian platform trap magmatism

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Dynamics of metasomatic transformation of the rocks of the lithospheric mantle and Earth’s crust in deep-fault zones controlling the Siberian platform trap magmatism. / Sharapov, V. N.; Mazurov, M. P.; Chudnenko, K. et al.

In: Russian Geology and Geophysics, Vol. 60, No. 8, 08.2019, p. 833-844.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{87a3645458f747dfa0828f4eb0742e36,

title = "Dynamics of metasomatic transformation of the rocks of the lithospheric mantle and Earth{\textquoteright}s crust in deep-fault zones controlling the Siberian platform trap magmatism",

abstract = "For a multirate approximation, we have determined the dynamics of rock heating by a magmatic-fluid flow in a flat permeable zone cutting the cratonic lithosphere of the Siberian Platform from a magma chamber at a depth of 50 km to the Earth{\textquoteright}s surface. This dynamics is compared with the dynamics of infiltration metasomatism in a three-layer lithosphere section: (1) harzburgitic mantle (depth 50–40 km), (2) crystalline basement (39–7 km), whose composition was simulated by the section of rocks hosting the skarn deposits of the Aldan Shield, and (3) platform cover (6–0 km), with its simplified rock compositions specified on the basis of the rock compositions in the southern and northern parts of the trap area of the Siberian Platform. Numerical modeling of the metasomatic transformation of rocks was performed in a multireservoir flow reactor, using the Selektor software. The initial composition of fluids in a magmatic source varied from highly reduced (water–methane) to ordinary (water–acid) (lg pO2 from –13.0 to –12.0). The obtained balances of the interacting phases show no significant change in the mass of aluminosilicate rocks in the mantle and Earth{\textquoteright}s crust sections and a significant loss of their mass under replacement of carbonate and sulfate deposits.",

keywords = "Fluids, Infiltration metasomatism, Modeling, Siberian platform, Traps",

author = "Sharapov, {V. N.} and Mazurov, {M. P.} and K. Chudnenko and Sorokin, {K. E.}",

year = "2019",

month = aug,

doi = "10.15372/RGG2019052",

language = "English",

volume = "60",

pages = "833--844",

journal = "Russian Geology and Geophysics",

issn = "1068-7971",

publisher = "Elsevier Science B.V.",

number = "8",

}

RIS

TY - JOUR

T1 - Dynamics of metasomatic transformation of the rocks of the lithospheric mantle and Earth’s crust in deep-fault zones controlling the Siberian platform trap magmatism

AU - Sharapov, V. N.

AU - Mazurov, M. P.

AU - Chudnenko, K.

AU - Sorokin, K. E.

PY - 2019/8

Y1 - 2019/8

N2 - For a multirate approximation, we have determined the dynamics of rock heating by a magmatic-fluid flow in a flat permeable zone cutting the cratonic lithosphere of the Siberian Platform from a magma chamber at a depth of 50 km to the Earth’s surface. This dynamics is compared with the dynamics of infiltration metasomatism in a three-layer lithosphere section: (1) harzburgitic mantle (depth 50–40 km), (2) crystalline basement (39–7 km), whose composition was simulated by the section of rocks hosting the skarn deposits of the Aldan Shield, and (3) platform cover (6–0 km), with its simplified rock compositions specified on the basis of the rock compositions in the southern and northern parts of the trap area of the Siberian Platform. Numerical modeling of the metasomatic transformation of rocks was performed in a multireservoir flow reactor, using the Selektor software. The initial composition of fluids in a magmatic source varied from highly reduced (water–methane) to ordinary (water–acid) (lg pO2 from –13.0 to –12.0). The obtained balances of the interacting phases show no significant change in the mass of aluminosilicate rocks in the mantle and Earth’s crust sections and a significant loss of their mass under replacement of carbonate and sulfate deposits.

AB - For a multirate approximation, we have determined the dynamics of rock heating by a magmatic-fluid flow in a flat permeable zone cutting the cratonic lithosphere of the Siberian Platform from a magma chamber at a depth of 50 km to the Earth’s surface. This dynamics is compared with the dynamics of infiltration metasomatism in a three-layer lithosphere section: (1) harzburgitic mantle (depth 50–40 km), (2) crystalline basement (39–7 km), whose composition was simulated by the section of rocks hosting the skarn deposits of the Aldan Shield, and (3) platform cover (6–0 km), with its simplified rock compositions specified on the basis of the rock compositions in the southern and northern parts of the trap area of the Siberian Platform. Numerical modeling of the metasomatic transformation of rocks was performed in a multireservoir flow reactor, using the Selektor software. The initial composition of fluids in a magmatic source varied from highly reduced (water–methane) to ordinary (water–acid) (lg pO2 from –13.0 to –12.0). The obtained balances of the interacting phases show no significant change in the mass of aluminosilicate rocks in the mantle and Earth’s crust sections and a significant loss of their mass under replacement of carbonate and sulfate deposits.

KW - Fluids

KW - Infiltration metasomatism

KW - Modeling

KW - Siberian platform

KW - Traps

UR - http://www.scopus.com/inward/record.url?scp=85079486323&partnerID=8YFLogxK

U2 - 10.15372/RGG2019052

DO - 10.15372/RGG2019052

M3 - Article

VL - 60

SP - 833

EP - 844

JO - Russian Geology and Geophysics

JF - Russian Geology and Geophysics

SN - 1068-7971

IS - 8

ER -

ID: 23290713