Results 1 to 10 of about 16,733 (259)

Magmatic constraints on localization of natural stone deposits in the Vehmaa rapakivi granite batholith, southwestern Finland [PDF]

Bulletin of the Geological Society of Finland, 2011
The 1580–1570 Ma old Vehmaa rapakivi granite batholith was studied with the aim to define the geological constraints for localization of natural stone deposits in the batholith.
O. Selonen, C. Ehlers, H. Luodes, F. Karell   +3 more
doaj   +3 more sources

New monazite U-Pb age constraints on the evolution of the Paleoproterozoic Vaasa granitoid batholith, western Finland [PDF]

Bulletin of the Geological Society of Finland, 2016
The Vaasa batholith, western Finland, is a large, peraluminous granitoid pluton that crystallized at 1.88–1.87 Ga during the culmination of the Svecofennian orogeny.
A.K. Kotilainen, I. Mänttäri, M. Kurhila, P. Hölttä, O.T. Rämö   +4 more
doaj   +4 more sources

A simplified GIS and google-earth-based approach for lineaments and terrain attributes mapping in a basement complex terrain [PDF]

Scientific Reports, 2022
In this study, we use an integrated geologic mapping technique for remote mapping of lineaments and geologic terrain. Our workflow is based on geographic information system tools and consists of stream network delineation, lineaments mapping, terrain ...
M. A. Lawal, A. O. Oshomoji, A. A. Akinlalu, K. O. Omosanya, O. S. Ndukwe, K. A. N. Adiat, G. O. Mosuro   +6 more
doaj   +2 more sources

The pristine precursor of Andean-type magmatism preserved in magma mingling zones [PDF]

Scientific Reports
Intermediate magma compositions have been postulated to be parental to Andean-type magmatism in the recent years. Geochemical and experimental methods have allowed the modelling of a hypothetical parental composition that accounts for the major element ...
Daniel Gómez-Frutos, Antonio Castro, Jesús de la Rosa   +2 more
doaj   +2 more sources

Thick crust, hydrous magmas, and the paradox of voluminous cold magmatism

Volcanica, 2021
Andesites are refined and “cold” magmas compared to their basaltic parents, yet large volumes of andesites are generated at continental arcs. We show that large andesitic plutons are favored when arc crust attains a thickness of ~60 km while mafic ...
Cin-Ty Lee, Boda Liu
doaj   +1 more source

Subsurface geometry of the Revell Batholith by constrained geophysical modelling, NW Ontario, Canada

Applied Computing and Geosciences, 2023
The Revell batholith is located within the Western Wabigoon terrane of the Superior Province, Northwestern Ontario, Canada, and is a potential site for a deep geological repository (DGR).
Martin Mushayandebvu, Aaron DesRoches, Martin Bates, Andy Parmenter, Derek Kouhi   +4 more
doaj   +1 more source

Geochronology of the Suomenniemi rapakivi granite complex revisited: Implications of point-specific errors on zircon U-Pb and refined λ₈₇ on whole-rock Rb-Sr [PDF]

Bulletin of the Geological Society of Finland, 2015
Multi-grain isotope dilution and secondary ion microprobe zircon U-Pb as well as wholerock Rb-Sr isotope dilution data on the late Paleoproterozoic Suomenniemi rapakivi granite complex (exposed on the northern flank of the Wiborg batholith in ...
O.T. Rämö, I. Mänttäri
doaj   +1 more source

From floor to roof of a batholith: geology and petrography of the north-eastern Serre Batholith (Calabria, southern Italy)

Journal of Maps, 2023
We present an original geological map of the north-eastern Serre Batholith (southern Italy), together with new field and petrographic data of its main five granitoid units. Our study provides an overall picture of a c.
Damiano Russo, Patrizia Fiannacca, Eugenio Fazio, Rosolino Cirrincione, Manish A. Mamtani   +4 more
doaj   +1 more source

Age and isotopic fingerprints of some plutonic rocks in the Wiborg rapakivi granite batholith with special reference to the dark wiborgite of the Ristisaari Island [PDF]

Bulletin of the Geological Society of Finland, 2014
The mid-Proterozoic, locus classicus Wiborg rapakivi granite batholith of southeastern Finland and adjacent Russia comprises a varying, bimodal (silicic-basic) sequence of plutonic, subvolcanic, and volcanic rocks. At the current level of erosion silicic
O.T. Rämö, V. Turkki, I. Mänttäri, A. Heinonen, K. Larjamo, Y. Lahaye   +5 more
doaj   +1 more source

Formation mechanism of the Vaasa Batholith in the Fennoscandian shield: Petrographic and geochemical constraints [PDF]

Bulletin of the Geological Society of Finland, 2012
The ~1.88 Ga Vaasa Batholith in western Finland is a large granitoid area (8 000 km2) with gradational contacts against the garnet- and cordierite-bearing diatexite and metatexite migmatites of the Pohjanmaa Belt.
H. Mäkitie, P. Sipilä, H. Kujala, A. Lindberg, A. Kotilainen   +4 more
doaj   +1 more source