Magnetotelluric model of Singhbhum granite batholith

2005 ◽  
pp. 120-151 ◽  
Author(s):  
K. K. Roy ◽  
A. K. Singh ◽  
C. K. Rao
Keyword(s):  
Granite Batholith ◽  
Singhbhum Granite

scholarly journals Magnetotelluric survey across Singhbhum granite batholith

1989 ◽  
Vol 98 (2) ◽  
pp. 147-165 ◽  
Author(s):  
K. K. Roy ◽  
C. K. Rao ◽  
A. Chattopadhyay
Keyword(s):  
Granite Batholith ◽  
Singhbhum Granite

Late Magmatism of the Galway Granite Batholith: II. Composite Dolerite–Rhyolite Dikes

2004 ◽  
Vol 22 (-1) ◽  
pp. 15-32 ◽  
Author(s):  
Paul Mohr
Keyword(s):  
Granite Batholith

The variation of cesium and 37 other elements in the Sardinian granite batholith, and the significance of cesium for granite petrogenesis

1993 ◽  
Vol 114 (2) ◽  
pp. 160-170 ◽  
Author(s):  
A. Hall ◽  
K. E. Jarvis ◽  
J. N. Walsh
Keyword(s):  
Granite Batholith

A Composite Breccia and Magmatic Dacite Dike in the Galway Granite Batholith

2007 ◽  
Vol 25 (1) ◽  
pp. 39-53
Author(s):  
Jon Hunt ◽  
Paul Mohr
Keyword(s):  
Granite Batholith

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 Zircon U-Pb dating confirms existence of a Caledonian scheelite-bearing aplitic vein in the Penggongmiao granite batholith, South Hunan

2011 ◽  
Vol 56 (19) ◽  
pp. 2031-2036 ◽  
Author(s):  
WenLan Zhang ◽  
RuCheng Wang ◽  
ZeHeng Lei ◽  
RenMin Hua ◽  
JinChu Zhu ◽  
...  
Keyword(s):  
Granite Batholith

Soda-granites from South of Tatanagar, Bihar, India

1966 ◽  
Vol 103 (4) ◽  
pp. 340-351 ◽  
Author(s):  
A. K. Banerji ◽  
A. K. Talapatra
Keyword(s):  
Partial Melting ◽  
Shear Zone ◽  
Confining Pressure ◽  
Residual Liquid ◽  
Copper Sulphide ◽  
Granite Magma ◽  
Singhbhum Shear Zone ◽  
Sudden Release ◽  
Singhbhum Granite

AbstractThe nature and origin of some soda-granites from the western part of the Singhbhum shear zone, Bihar, India, are discussed. These soda-granites are responsible for copper sulphide, apatite-magnetite, and uraniferous mineralization within the shear zone. Earlier workers regarded these rocks as sheared materials representing a portion of the high sodic residual liquid from the neighbouring Singhbhum granite magma. The present work indicates that these rocks are migmatitic in nature and are the products of progressive replacement of pre-existing pelitic and semi-pelitic schists by felspathic materials. Migmatization is essentially post-shearing in age while the Singhbhum granite is pre-shearing in age. The migmatitic materials appear to have been derived by the partial melting of the Singhbhum granite during shearing, particularly in depth, as a result of sudden release of confining pressure consequent upon shearing and generation of heat caused by friction at the base of the shear zone. The resulting liquids, which were albite rich, found easy passage through the shear zone and brought about migmatization and mineralization in its wake.

scholarly journals A review of the inferred geodynamic evolution of the Dharwar craton over the ca. 3.5–2.5 Ga period, and possible implications for global tectonics

2014 ◽  
Vol 51 (3) ◽  
pp. 312-325 ◽  
Author(s):  
P.V. Sunder Raju ◽  
P.G. Eriksson ◽  
O. Catuneanu ◽  
S. Sarkar ◽  
S. Banerjee
Keyword(s):  
Dharwar Craton ◽  
Island Arcs ◽  
Tectonic Processes ◽  
Granitic Magmatism ◽  
High Grade Metamorphism ◽  
Granite Batholith ◽  
Wilson Cycle ◽  
Greenstone Belts ◽  
Granitoid Intrusions ◽  
Global Tectonics

The geological history and evolution of the Dharwar craton from ca. 3.5–2.5 Ga is reviewed and briefly compared with a second craton, Kaapvaal, to allow some speculation on the nature of global tectonic regimes in this period. The Dharwar craton is divided into western (WDC) and eastern (EDC) parts (separated possibly by the Closepet Granite Batholith), based on lithological differences and inferred metamorphic and magmatic genetic events. A tentative evolution of the WDC encompasses an early, ca. 3.5 Ga protocrust possibly forming the basement to the ca. 3.35–3.2 Ga Sargur Group greenstone belts. The latter are interpreted as having formed through accretion of plume-related ocean plateaux. The approximately coeval Peninsular Gneiss Complex (PGC) was possibly sourced from beneath plateau remnants, and resulted in high-grade metamorphism of Sargur Group belts at ca. 3.13–2.96 Ga. At about 2.9–2.6 Ga, the Dharwar Supergroup formed, comprising lower Bababudan (largely braided fluvial and subaerial volcanic deposits) and upper Chitradurga (marine mixed clastic and chemical sedimentary rocks and subaqueous volcanics) groups. This supergroup is preserved in younger greenstone belts with two distinct magmatic events, at 2.7–2.6 and 2.58–2.54 Ga, the latter approximately coincident with ca. 2.6–2.5 Ga granitic magmatism which essentially completed cratonization in the WDC. The EDC comprises 2.7–2.55 Ga tonalite–trondhjemite–granodiorite (TTG) gneisses and migmatites, approximately coeval greenstone belts (dominated by volcanic lithologies), with minor inferred remnants of ca. 3.38–3.0 Ga crust, and voluminous 2.56–2.5 Ga granitoid intrusions (including the Closepet Batholith). An east-to-west accretion of EDC island arcs (or of an assembled arc – granitic terrane) onto the WDC is debated, with a postulate that the Closepet Granite accreted earlier onto the WDC as part of a “central Dharwar” terrane. A final voluminous granitic cratonization event is envisaged to have affected the entire, assembled Dharwar craton at ca. 2.5 Ga. When Dharwar evolution is compared with that of Kaapvaal, while possibly global magmatic events and freeboard–eustatic changes at ca. 2.7–2.5 Ga may be identified on both, the much earlier cratonization (by ca. 3.1 Ga) of Kaapvaal contrasts strongly with the ca. 2.5 Ga stabilization of Dharwar. From comparing only two cratons, it appears that genetic and chronologic relationships between mantle thermal and plate tectonic processes were complex on the Archaean Earth. The sizes of the Kaapvaal and Dharwar cratons might have been too limited yet to support effective thermal blanketing and thus accommodate Wilson Cycle onset. However, tectonically driven accretion and amalgamation appear to have predominated on both evolving cratons.

scholarly journals Anatomy, Age and Evolution of the Baltoro granite batholith, Pakistani Karakoram

1970 ◽  
Vol 5 (7) ◽  
pp. 137
Author(s):  
Michael Searle ◽  
Andrew Thow ◽  
Randall Parrish ◽  
Steve Noble ◽  
David Waters
Keyword(s):  
Special Issue ◽  
Granite Batholith

DOI = 10.3126/hjs.v5i7.1319 Himalayan Journal of Sciences Vol.5(7) (Special Issue) 2008 p.137

Sign in / Sign up

Export Citation Format

Share Document