Geochemistry,protolith origin,and age of Lower Proterozoic Fe- and Al-rich metapelites in the Transangarian Yenisei Ridge     

Likhanov  I. I.  Reverdatto  V. V.  Vershinin  A. E. 《Doklady Earth Sciences》2010,433(1):966-973

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Estimation of the emplacement depth of a magmatic intrusive body based on the data for distribution of isogrades in the surrounding metamorphic zoning (Model approximation)     

Reverdatto  V. V.  Babichev  A. V.  Korobeinikov  S. N.  Polyanskii  O. N. 《Doklady Earth Sciences》2010,430(2):244-247

A method of model calculations for the approximate estimation of the emplacement depth of magmatic intrusive body based on data for the distribution of isotherms in the near-intrusive area is proposed. Isotherms are maximums of respective temperatures reached when exocontact rocks are heated at a different time; some of them represent isogrades. The calculations require knowing the form of the intrusive body, the magma composition and initial temperature, the regional geothermal gradient in the Earth’s crust during the magma intrusion, the thermal and physical properties of rocks and melt, and the distribution of isogrades/isotherms in the enclosing rocks. The probable depth of emplacement of the Kharlovo gabbro massif in the northwestern foothill belt of Altai is estimated as an example. It was determined to be 7–8 km. The estimates of depth that are obtained in such a way cannot be absolutely accurate, since they are a result of calculations in a simplified model statement.

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Upper Riphean age of kyanite-sillimanite metamorphism in the Transangarian Yenisei Ridge: Evidence from ⁴⁰Ar/³⁹Ar data     

I. I. Likhanov  V. V. Reverdatto  P. S. Kozlov  A. V. Travin 《Doklady Earth Sciences》2010,433(2):1108-1113

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Geochemistry and nature of the protolith of lower proterozoic Fe-Al metapelites in the Transangara region, Yenisei Ridge     

A. E. Vershinin  I. I. Likhanov  V. V. Reverdatto 《Doklady Earth Sciences》2007,415(5):804-809

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Investigations in isochemical contact metamorphism     

V. V. Reverdatto  V. N. Sharapov  Yu. G. Lavrent'ev  O. S. Pokachalova 《Contributions to Mineralogy and Petrology》1974,48(4):287-299

Isochemical contact metamorphism was observed in 3 localities based on 184 chemical analyses of rock samples and the significance tested using simple statistical techniques. The intrusions included gabbro, granosyenite, and granitic type rocks being intruded into respective schists, clays and shales, and schists and gneisses. Conductive heat transfer appeared to be the most important heat transfer mechanism in isochemical contact metamorphism. During isochemical metamorphism both H₂O and CO₂ were rather mobile and impoverished in the metamorphic rocks.  相似文献   

Some questions of analytical simulation of contact metamorphism     

V. V. Reverdatto  V. N. Sharapov  R. M. Slobodskoy 《Contributions to Mineralogy and Petrology》1972,36(3):195-206

The results of revised studies in analytical simulation of processes leading to development of isochemical contact metamorphic zonation by means of conductive heat transfer are reported. The peculiarities in temperature distribution in contact aureoles of intrusives are discussed for cases of convective heat transfer.  相似文献   

Late proterozoic A-type granites of the chernorechenskii massif in the Yenisei ridge: New geochemical and geochronological data     

I. I. Likhanov  V. V. Reverdatto  P. S. Kozlov  V. V. Khiller  A. D. Nozhkin 《Doklady Earth Sciences》2014,455(1):279-283

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Zoning of garnets as an indicator of metamorphic evolution in metapelites of the Yenisei Ridge     

I. I. Likhanov  V. V. Reverdatto 《Doklady Earth Sciences》2014,458(1):1099-1103

The geochemical patterns of major and trace elements in zonal garnets and the mineral inclusions in them formed by progressive and regressive metamorphism of pelites are established. It is shown that an increase in temperature and pressure led to a decrease in the Y and HREE contents in garnets, and the increase in their contents is related to a decrease in the PT-parameters of their formation. A negative correlation between the CaO and REE contents in garnet indicates their isomorphism. The main reason for the sharp increase in the CaO content in garnets during collision metamorphism is mass transfer between the garnet and the plagioclase. The deviations from this situaiton, which are expressed in simultaneous increase in the grossular component in garnet and the anorthite component in plagioclase, are caused by metamorphic reactions related to the epidote decomposition. The mass transfer of major and trace elements between the reacting phases in metamorphic reactions mostly occurred with preservation of the balance of matter. The mirror shape and the character of the REE patterns of the rock-forming minerals relative to the composition of the rock indicate the equilibration of the HREE and Y contents between garnet, the major concentrator of these elements in the rock, and other phases. The balance between the LREEs and HREEs in the rock is achieved by the presence of variable amounts of monazite.  相似文献   

Early stages of the evolution of the Paleoasian Ocean on the western margin of the Siberian Craton: Evidence from geochronological and geochemical studies of Yenisei Ridge     

Likhanov  I. I.  Nozhkin  A. D.  Reverdatto  V. V. 《Doklady Earth Sciences》2017,476(1):1089-1093

Based on analysis of new data on the geodynamical nature, ages of formation, and magmatic sources of contrasting rocks from the tectonic mélange of the Yenisei shear zone, the chronological sequence related to early stages in the evolution of the Paleoasian Ocean was established. The data obtained specify the legend and stratigraphic scheme of the Yenisei Group and peculiarities in the evolution of the Sayany–Yenisei accretionary belt at the final stage of its Neoproterozoic history.

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