Intraplate magmatic systems of the Mesoproterozoic by the example of anorthosite-rapakivi granite complexes of Baltic and Ukrainian shields

1998 ◽  
Vol 1 (4) ◽  
pp. 311-337 ◽  
Author(s):  
E. V. Sharkov
Keyword(s):  
Rapakivi Granite

Elastic anisotropy, permeability, and freeze-thaw cycling of rapakivi granite

2020 ◽  
Vol 136 ◽  
pp. 104541
Author(s):  
Tatiana I. Ivankina ◽  
Ivan Yu. Zel ◽  
Matej Petruzalek ◽  
Mikhail V. Rodkin ◽  
Maksim A. Matveev ◽  
...  
Keyword(s):  
Elastic Anisotropy ◽  
Rapakivi Granite ◽  
Freeze Thaw

scholarly journals Geoheritage Meaning of Artificial Objects: Reporting Two New Examples from Russia

Heritage ◽  
2021 ◽  
Vol 4 (4) ◽  
pp. 2721-2731
Author(s):  
Anna V. Mikhailenko ◽  
Dmitry A. Ruban ◽  
Vladimir A. Ermolaev
Keyword(s):  
Urban Areas ◽  
Coal Waste ◽  
Rapakivi Granite ◽  
Saint Petersburg ◽  
Geological Processes ◽  
Urban Heritage ◽  
Geosite Assessment ◽  
Mountainous Landscape

Geoheritage is not necessarily linked genetically to “purely” geological processes. Investigations in two urban areas of Russia allowed us to find essentially artificial objects demonstrating certain geological uniqueness. The huge balls sculptured from rapakivi granite and installed in Saint Petersburg represent cultural, historical, and stone heritage. These are also artificial megaclasts with perfect sphericity. The coal waste heaps situated in Shakhty and its vicinity represent industrial, historical, and urban heritage. These are also artificial landforms creating a kind of pseudo-mountainous landscape. These examples permit us to question the importance of the co-occurrence of heritage categories for geosite assessment.

Rapakivi granite in the architecture of St Petersburg: a potential Global Heritage Stone from Finland and Russia

2020 ◽  
Vol 486 (1) ◽  
pp. 67-76 ◽  
Author(s):  
Andrey Bulakh ◽  
Paavo Härmä ◽  
Elena Panova ◽  
Olavi Selonen
Keyword(s):  
South Africa ◽  
Middle Ages ◽  
Russian Federation ◽  
Natural Stone ◽  
Leningrad Region ◽  
Rapakivi Granite ◽  
The Usa ◽  
Granite Batholith ◽  
The Russian Federation ◽  
The Uk

AbstractRapakivi granites were in use during the Middle Ages in Finland. Their most spectacular use, however, was for structures built in St Petersburg between 1760 and 1917. Remarkable examples are the majestic and slender Alexander Column and the 112 columns of St Isaac's Cathedral. All Rapakivi granite was extracted from the Wiborg Rapakivi granite batholith in several quarries around the municipality of Virolahti in SE Finland (old Russia). Today, the 1640 Ma-old Wiborg batholith is the most important area for natural stone production in Finland and in the Leningrad region, Russian Federation. The main quarried stone varieties of Rapakivi granite (Baltic Brown, Baltic Green, Carmen Red, Karelia Red, Eagle Red and Balmoral Red) are regularly produced in large quantities in Finland for the global stone market due to the stone's unique qualities. Examples of applications in Rapakivi granite from Finland can be found in the USA, China, South Africa, the UK, Italy, Austria, Ireland, Spain and Germany as well as in Scandinavia and Russia. There are also quarries near Vyborg, the Russian Federation: Vozrozhdenie and Ala-Noskua.

scholarly journals REE-bearing minerals in the Rapakavi Grante, Southern Finland

2015 ◽  
Vol 7 (1) ◽  
Author(s):  
Thair Al-Ani
Keyword(s):  
Solid Solution ◽  
Electron Probe ◽  
Granitic Magma ◽  
Accessory Mineral ◽  
Hydrothermal Solutions ◽  
Rapakivi Granite ◽  
Solid Solution Series ◽  
Ree Mineralization ◽  
Geochemical Studies ◽  
Primary Minerals

AbstractThe studied rock samples belong to the classic 1615–1645 Ma Wiborg Rapakivi granite terrane of southeastern Finland. Geochemical studies show that the rapakivi granites and associated rocks form metaluminous to peraluminous A-type granites and plot in the "within plate granites (WPG)" field on the tectonic discriminate diagrams from the Onkamaa, Suomenniemi and Luumäki. The rapakivi granite displays enrichment of light over heavy REE (LREE/HREE = 2-34) and usually negative Eu anomalies (Eu/Eu* = 0.01 - 1.4). Enrichment in REE in some studied samples is confined to highly fractionated portions of the Rapakivi granite. Fractional crystallization of the evolving fluorite-rich peraluminous granitic magma was accompanied, particularly at later stages by fluid fractionation, which plays an important role in the genesis of the REE-mineralization. The studied rapakivi granites host REE-minerals including monazite-(Ce), allanite (Ce), bastnäsite (Ce), xenotime, thorite and REE-bearing mineral apatite. Monazite and allanite are the most important REE carriers in the studied granites and these minerals are strongly enriched in the LREE.Monazites are hosted in apatite, quartz, plagioclase, K-feldspar, and biotite. Grain size of monazite is variable ranging from 50 to >100 μm.Monazite contains 48-68 wt% REE2O3, 24.3-29.3 wt% P2O5 and low Th<1.5 wt%ThO2. The Y, REE, U, Th-bearing minerals are not commonly associated with the primary minerals except for Th-bearing minerals, which occur as silicates (e.g. thorite, ThSiO4); and/or replace other elements in the structure of some accessory mineral, especially xenotime, brabantite, zircon, and apatite. Electron probe microanalysis (EPMA) provides an indication of solid solution series between thorite-xenotimezircon, which are related to hydrothermal solutions enriched in REE, Y, P, U, F, and Zr.

Geochemistry and Origin of Early Proterozoic Dongargarh Rapakivi Granite Complex, Central India - An Example for Magma Mixing and Differentiation

2000 ◽  
Vol 3 (4) ◽  
pp. 507-520 ◽  
Author(s):  
B.L. Narayana ◽  
J. Mallikharjuna Rao ◽  
M.V. Subba Rao ◽  
N.N. Murthy ◽  
V. Divakara Rao
Keyword(s):  
Magma Mixing ◽  
Central India ◽  
Rapakivi Granite ◽  
Early Proterozoic ◽  
Granite Complex

scholarly journals Petrogenesis and thermobarometry of the ∼50 Ma rapakivi granite-syenite Acapulco intrusive: Implications for post-Laramide magmatism in southern Mexico

Geosphere ◽  
2011 ◽  
Vol 7 (6) ◽  
pp. 1419-1438 ◽  
Author(s):  
Guillermo A. Hernández-Pineda ◽  
Luigi A. Solari ◽  
Arturo Gómez-Tuena ◽  
Doris L. Méndez-Cárdenas ◽  
Ofelia Pérez-Arvizu
Keyword(s):  
Rapakivi Granite ◽  
Southern Mexico
Sign in / Sign up

Export Citation Format

Share Document