MINERALOGY OF HOST ROCKS OF THE OSINOVSKOE GOLD-QUARTZ DEPOSIT (CENTRAL URALS) [PDF]
Минералогия, 2023 The paper describes the mineralogy of mica shales of the Osinovskoe gold deposit in the Central Urals. Our studies unraveled the role of dynamometamorphism in the transformation of primary rocks and allowed the characterization of their metasomatic ...
N.P. Safina, L.Ya. Kabanova, I.A. Blinov
doaj +1 more source
MARBLE DIKES IN THE OLKHON COMPOSITE TERRANE (WEST BAIKAL AREA)
Геодинамика и тектонофизика, 2022 Linear or lens-like carbonate (marble) and carbonate-silicate bodies among gabbro and amphibolites within the Krestovsky subterrane of the Olkhon composite terrane (West Baikal Area) are identified as dikes.
E. V. Sklyarov +2 more
doaj +1 more source
Fluid-induced metamorphism and anatexis of refractory Ni-Co-Cu sulphides in subduction-related rocks [PDF]
E3S Web of Conferences, 2019 The role of metamorphism on refractory sulfides is not well constrained. Although experiments have displayed the effectiveness of high grade metamorphism, namely granulite facies metamorphism, on sulfide anatexis, its role in the presence of other ...
Kepezhinskas Nikita
doaj +1 more source
Matching of images based on their diffeomorphic mapping [PDF]
Компьютерная оптика, 2018 We discuss a problem of comparison of two diffeomorphic images, namely, the source and target images of a diffeomorphism, which are given by two sets of points.
Sergej Lejhter, Sergey Chukanov
doaj +1 more source
Experimental study and weighting analysis of factors influencing gas desorption
Frontiers in Earth Science, 2023 Gas is one of the necessary contributing factors for coal and gas outburst accidents, and the gas desorbed in coal is the energy carrier in the outburst process.
Xin He +6 more
doaj +1 more source
Геодинамика и тектонофизика, 2020 The Archean metamorphism in the southwestern Siberian craton was confirmed by the studies of the Kitoy and Irkutsk blocks. However, the parameters of the metamorphism process are still poorly investigated.
V. P. Sukhorukov, V. B. Savel'eva
doaj +1 more source
The 1.79 Ga Särkilahti leucogranite – a horizontal magma layer below granulite-grade migmatites in SE Finland [PDF]
Bulletin of the Geological Society of Finland, 2019 The heterogeneous, peraluminous Särkilahti garnet-cordierite leucogranite occupies ~ 75 km2 area in Svecofennian granulite-grade terrain of SE Finland. Country rocks are metasedimentary garnet-cordierite-biotite migmatites with some orthopyroxenegarnet ...
Hannu Mäkitie +3 more
doaj +1 more source
Fluid inclusions in rocks of the Archean high-grade Varpaisjärvi-Lapinlahti area, central Finland [PDF]
Bulletin of the Geological Society of Finland, 1992 Fluid inclusions both in matrix quartz of metamorphic rocks and in quartz veins from five samples from the Archean high-grade Varpaisjärvi-Lapinlahti area were examined with microthermometric methods. Two types of fluid inclusions were observed: CO2-rich
M. Poutiainen
doaj +1 more source
PETROGRAPHY AND GEOCHEMISTRY OF METASEDIMENTS FROM BUGAJI, PART OF MALUMFASHI SHEET 79 NE, KANO STATE, NORTHWESTERN NIGERIA [PDF]
Geological Behavior, 2023 This research is aimed at determining the protolith of metasediments that underpin the geology of Bugaji region of Kano State. The study area was mapped systematically and the lithologies encountered include phyllite, undifferentiated schist, quartzo ...
Abdullah Musa Ali +1 more
doaj +1 more source
Jewelry Morocco septaria. Gemological characteristics and mineral composition
Известия высших учебных заведений: Геология и разведка, 2023 Background. Septaria, comprising calcareous-clay nodules with calcite veins, are widely used as jewelry and ornamental materials. Septaria from Morocco represented on the world and Russian markets of jewelry and ornamental stones remain gemologically and
D. A. Petrochenkov
doaj +1 more source