Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Alexei L. Perchuk"'
Publikováno v:
Gondwana Research. 119:186-203
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
Scientific Reports
Scientific Reports
Partial melting of mantle peridotites at spreading ridges is a continuous global process that forms the oceanic crust and refractory, positively buoyant residues (melt-depleted mantle peridotites). In the modern Earth, these rocks enter subduction zo
Publikováno v:
Nature. 586:395-401
The ancient cores of continents (cratons) are underlain by mantle keels-volumes of melt-depleted, mechanically resistant, buoyant and diamondiferous mantle up to 350 kilometres thick, which have remained isolated from the hotter and denser convecting
Publikováno v:
Russian Geology and Geophysics. 61:571-591
—The phase relations and melting of subducting sediment were studied in two series of high-pressure experiments at 750– 900 °C and 2.9 GPa and by thermodynamic modeling. In the runs we used a chemical mixture corresponding in composition to glob
Publikováno v:
Moscow University Geology Bulletin. 75:254-267
The results of U–Pb zircon dating, as well as the petrologic-geochemical study of samples of zircon-bearing garnet–biotite plagiogneiss and quartz—plagioclase–amphibole granofels from the Vishnevogorsky sequence of the oldest rocks of the Eas
Publikováno v:
Moscow University Bulletin. Series 4. Geology. :51-62
In the article present results of U-Pb — dating of zircons and petrologic-geochemical study of garnet-biotite plagiogneises and quartz-plagioclase-amphibole granofels host rocks samples from Vishnevogorsky sequence of the oldest rocks of the southe
Publikováno v:
Petrology. 27:467-488
We present the results of analogue experiments carried out in a piston–cylinder apparatus at 750–900°C and 2.9 GPa aimed to simulate metasomatic transformation of the fertile mantle caused by fluids and melts released from the subducting sedimen
Publikováno v:
Precambrian Research. 330:20-34
On contemporary Earth, subduction recycles mafic oceanic crust and associated volatile elements, creating new silicic continental crust in volcanic arcs. However, if the mantle was hotter in the Precambrian, the style of subduction, the depth of devo
Publikováno v:
Moscow University Geology Bulletin. 74:321-331
This work presents the results of a detailed petrological study of olivine gabbro transformed to a different extent during the eclogite facies metamorphism. The textural features of cumulate crystallization in the rock at the magmatic stage are prese
Publikováno v:
Petrology. 27:124-145
The Marun-Keu Complex of high-pressure rocks comprises granitoids, gneisses schists, gabbroids, and peridotites, which are unevenly and variably metamorphosed to the eclogite facies. A representative sample of garnet–amphibole lherzolite from the M