Gold mobilization during metamorphic devolatilization of Archean and Paleoproterozoic metavolcanic rocks [PDF]
Geology, 2020 Abstract Volcanic rocks in Archean and Paleoproterozoic greenstone belts are abundant and have been suggested as a potential Au source for orogenic Au deposits. The behavior of Au during metamorphism of these rocks is, however, poorly known.
Patten, C. G. C. +6 more
openaire +3 more sources
The Pyhäntaka formation, Southern Finland: A sequence of metasandstones and metavolcanic rocks upon an intra-orogenic unconformity [PDF]
Bulletin of the Geological Society of Finland, 2011 Detrital zircon studies suggest that the few quartzite occurrences in southern Finland are younger than 1.87 Ga and express sedimentation after 1.89–1.87 Ga accretional deformation and metamorphism in the Svecofennian orogenic belt.
M. Nironen
doaj +2 more sources
The petrology of the metavolcanic rocks of the Rusty Lake area, Manitoba
, 1972 A study of the mineralogical and chemical properties of the metavolcanic rocks of the Rusty Lake greenstone belt was accomplished by means of sampling on a 1000 foot grid. In total, this greenstone belt is exposed over more than 250 square miles.
Steeves, Michael Albert
openaire +2 more sources
Geology and Lithogeochemistry of the Supracrustal Sequence and Interlayered Metabasites of NE Santos Dumont Region (MG) [PDF]
Anuário do Instituto de Geociências, 2017 The region near Santos Dumont town consists of a sequence of interlayered metabasic rocks and supracrustal gneisses. Two lithological units were individualized based on geological-structural mapping (1:50,000), petrography and lithogeochemistry: a ...
Renata Hiraga +5 more
doaj +1 more source
Strain analysis in the Orijärvi triangle, southwestern Finland; in perspective of tectonic models [PDF]
Bulletin of the Geological Society of Finland, 1999 Finite strain analyses were performed in metavolcanic rocks (agglomerates and pillowed metabasalts) from the Orijärvi area, southwestern Finland. In this area, tight folding (F1) of layered metasedimentary rocks and development of a penetrative axial ...
H. Stel, D. Van Rees, B. Schenke
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The Salittu Formation in southwestern Finland, part II: Picritic-basaltic volcanism in mature arc environment [PDF]
Bulletin of the Geological Society of Finland, 2017 Svecofennian orogen that contain ultramafic rocks. New samples were collected from the picritic and basaltic rocks as well as spatially associated gabbroic rocks, and their major and trace element compositions are presented and discussed here.
M. Nironen
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Journal of the Geological Survey of Brazil, 2023 The Pitangui Synclinorium is located in the northwestern portion of the Quadrilátero Ferrífero mineral province, São Francisco Craton, in southeast Brazil.
Marcelo de Souza Marinho +8 more
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Radiometric ages and other isotopic data bearing on the evolution of Archaean crust and ores in the Kuhmo-Suomussalmi area, eastern Finland [PDF]
Bulletin of the Geological Society of Finland, 1999 The Archaean greenstone-gneiss terrain in the Kuhmo-Suomussalmi district in eastern Finland has been isotopically studied in connection with regional bedrock mapping and local mineral exploration projects.
M. Vaasjoki, K. Taipale, I. Tuokko
doaj +1 more source
Early Neoarchean metavolcanic rocks from Jiaobei terrane, North China Craton
, 2023 Zircon U-Pb isotopic dating data of early Neoarchean metavolcanic rocks from Jiaobei terrane, North China Craton
Wei Wang (14561372)
core +1 more source
Geology of giant quartz veins and their host rocks from the Eastern Pyrenees (Southwest Europe)
Journal of Maps, 2023 Giant Quartz Veins (GQVs) are ubiquitous in different tectonic settings and, besides being often related to hydrothermal ore deposits, also represent large-scale fingerprints of the structural and geochemical history of the rocks in which they are hosted.
Eloi González-Esvertit +5 more
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