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Professor Leonid L. Perchuk

Professor Leonid Perchuk was a founder and scientific leader of the International School of Earth.s Sciences (I.S.E.S 2005-2009). He was born in Odessa, graduated from Odessa State University, Geology Faculty in 1956 with qualification in geology and hydrogeology engineering. PhD thesis: "Physico-chemical petrology of granitoid and alkali intrusions of the Central Turkestano-Alai. (defended in 1963); Dr. habil. thesis: .The equilibrium of rock-forming minerals. (1968); professor (1975); Head of the Petrology Department, Geology Faculty, MSU (1991-2009). Chairman and head of the laboratory of Phase Correspondence (1969) and Major Scientist in the Institute of Experimental Mineralogy of Russian Academy of Sciences (IEM RAS). Academician of the High School (1991). Member of the Russian Petrography Committee, Chair (1968-1990), member of the committee of the mineral thermodynamics and local equilibrium (International Mineralogical Association, 1978). Chair (1985-1990), member (1985) of the workgroup of the UNESCO "Metamorphism and geodynamics" project. Chief of the Scientific Conceal of Geochemistry of the Geology Faculty, Moscow State University and member of the Scientific Conceal, IEM RAS. Member of the MSU special Conceal. Editorial boards member in "Petrology", "Journal of Metamorphic Geology" and "Advances in Physical Geochemistry" journals.

USSR State prize laureate (1975), has the federal awards.

Scientific interests area: genetic mineralogy, physicochemical petrology, phase correspondence in the mineral systems. He established the Phase Correspondence Principle (USSR State prize). This principle became a base for calibration of whole number of mineralogical tools, estimating temperature, pressure, and fluid fugacity in geochemical processes. Together with his students, L.L. Perchuk developed experimental methods for studies of mineral equilibria under high temperature and pressure conditions. These approaches were subsequently used for precise calibration of series of geothermometers and geobaromenters, whose application helped to infer an important regularities of magmatic and metamorphic processes; decipher thermodynamic regimes and rates of geodynamic processes in the Earth crust and upper mantle; and work out the petrogenentic models of the .continental crust - oceanic crust. transformation. In 1987, L.L. Perchuk for the first time formulated a principle of gravitational re-distribution mechanism of the rocks in the Earth crust accompanied by high-grade metamorphism. This model made clear the wide spread of granulite complexes near the Earth surface with a quite regular thickness of the crust. He was the first who applied the model of chain reactions for the slow geodynamic processes and, together with his students, developed the numerical models of gravitational re-distribution. These data are in a good agreement with the basic burning and explosion equations. L.L. Perchuk studied the crystalline massifs of metamorphic and igneous rocks in many regions of USSR, Czech Republic, Poland, USA, Japan and Australia.

L.L. Perchuk delivered the original courses "Thermodynamics of rock-forming minerals ", "Theory of phase correspondence ", "Principles of theoretical petrology " in Moscow State University. Supervised over 40 PhD students and 6 habilitation doctors. Published more than 350 scientific papers, including 17 monographs, 2 textbooks and 2 reference books.

Scientific School "Magmatism, metamorphism, and geodynamics"

  • The main methodological feature of School activity is the combination of field, theoretical, experimental and empirical studies.
  • On the phase correspondence theory basis, L.L. Perchuk worked out the first set of self-consistent mineral thermometers and barometers. These tools are widely used in modern petrology and provided a basis for studies of mineral thermodynamics.
  • New petrology areas and physical geochemistry, developed by the School are (Б) numerical geodynamic models of magmatic and metamorphic processes; (b) experimental and theoretical studies of the deep-seated mineral assemblages involving potassium-bearing clinopyroxene; (c) investigation of thermodynamic significance of melt inclusions in minerals.
  • L.L. Perchuk and T.V. Gerya elaborated models of mineral reaction textures in metamorphic rocks formation and methods of estimation for chemical potentials in fluid components.
  • Mechanism and rates of geodynamic processes in the Archean crust and paleosubduction zones have been reconstructed on the basis of the т-ф paths and geospeedometry.
  • L.L. Perchuk with collaborators proved that an exhumation of the ancient rocks from the lower crust towards the surface proceeds via the gravitational re-distribution mechanism.