Results 71 to 80 of about 479 (172)

Melts and fluids evolution in the process of crust and mantle formation in Paleo-Proterozoic (2,2—1,75 Ga ago). Stratigraphy and magnetic activity

open access: yesГеофизический журнал, 2017
Stratigraphy of metamorphic Precambrian complexes related to Paleo-Proterozoic is controversial. An additional sign permitting to correlate strata may be their material composition because in the Precambrian composition of deep fluids changed regularly.
O. V. Usenko
doaj   +1 more source

MESO-NEOPROTEROZOIC GRENVILLE-SVECONORWEGIAN INTRACONTINENTAL OROGEN: HISTORY, TECTONICS, GEODYNAMICS

open access: yesГеодинамика и тектонофизика, 2017
The objective of this paper is to represent the main features inherent to Grenville-Sveconorwegian Orogen (GSNO) and to propose a model of tectonic and geodynamic evolution of this orogen based on the results of research concerning similar Precambrian ...
M. V. Mints
doaj   +1 more source

Геохимические особенности выветривания гранита в условиях городской среды [PDF]

open access: yes, 2021
Гранит рапакиви и сердобольский гранит широко использованы в архитектуре Санкт-Петербурга. С течением времени в условиях агрессивной среды крупного города происходит разрушение сооружений из природного камня. Гранит подвергается физическому, химическому,
Prokopec Viktoria Aleksandrovna   +1 more
core  

Microorganisms in Superficial Deposits on the Stone Monuments in Saint Petersburg. [PDF]

open access: yesMicroorganisms, 2022
Sazanova KV   +5 more
europepmc   +1 more source

The emplacement and deformation of granitic rocks in a transpressional shear zone: the ox mountains igneous complex [PDF]

open access: yes, 1989
The structural evolution of the Ox Mountains Granodiorite {478±12Ma) during and after its emplacement is described. This pluton has been emplaced within and synchronously with, a major transpressional shear zone which is expressed as a 11km wide belt of ...
McCaffrey, Kenneth J.W., McCaffrey, K.J
core  

Gravimetric modeling of the Parguaza granitic intrusion, Guyana Precambrian Shield, southwestern Venezuela using geochronological constraints [PDF]

open access: yesGeofísica Internacional, 2004
A combined gravimetric and geochronological interpretation of the Parguaza intrusion in the Guayana shield, southwestern Venezuela, indicates that there is a pattern of inverse cooling within this pluton.
Oscar Mirón-Valdespino   +3 more
doaj  

FIELD TECTONOPHYSICS IN SOLUTIONS OF GEODYNAMIC EVOLUTION PROBLEMS OF THE UKRAINE TERRITORY

open access: yesГеодинамика и тектонофизика, 2015
The integrated approach combining kinematic and structural-paragenetic field tectonophysics techniques allows us to construct a continuous time scan of the stress-strain state (SSS) and deformation modes (DM) from sediment lithification to the final ...
O. B. Gintov   +2 more
doaj   +1 more source

The origin of rapakivi texture by sub-isothermal decompression

open access: yes, 1999
The rapakivi texture (plagioclase-mantled K-feldspar ovoids, rounded quartz megacrysts and euhedral plagioclase megacrysts in a more fine-grained granitic matrix) has been studied in five Proterozoic (1.64-1.55 Ga) anorogenic rapakivi granite batholiths ...
Shebanov, AD,, Eklund, O,
core  

Geochemistry and petrogenesis of the Kolah-Ghazi granitoid assemblage, south of Esfahan

open access: yesJournal of Economic Geology, 2018
Introduction The Kolah-Ghazi granitoid assemblage is located in the south of Esfahan and in the Sanandaj-Sirjan magmatic-metamorphic zone. The Sanandaj-Sirjan zone is extended for 1500 km from Sirjan in the southeast to Sanandaj in the northwest of Iran
Jamshid Ahmadian   +3 more
doaj   +1 more source

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