Petrology of Metavolcanic Rocks in the Bishop Corners – Donaldson Area, Grenville Province, Ontario
Canadian Journal of Earth Sciences, 1973 A calc-alkalic suite, with an apparent thickness of 7 km, varies from alkali basalt and tholeiite composition in the lowest part exposed, through andesite flows and pyroclastic rocks, to rhyodacite pyroclastics at the top. Sixty-two chemical analyses demonstrate a single volcanic cycle.
K. Sethuraman, John M. Moore Jr.
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Pontiac metavolcanic rocks within the Cadillac tectonic zone, McWatters, Abitibi Belt, Quebec
Canadian Journal of Earth Sciences, 1993 The McWatters metavolcanic rocks are structurally bounded lenses within the Cadillac tectonic zone on the southern boundary of the Abitibi greenstone belt. They comprise komatiite, tholeiitic basalt and gabbro, and calc-alkaline andesitic lavas and volcaniclastic rocks cut by calc-alkaline dioritic and lamprophyric dykes. The McWatters basalts are mid-
David Morin +3 more
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Hydrocarbons in the Säviä volcanic schist zone, central Finland [PDF]
Bulletin of the Geological Society of Finland, 1987 Light hydrocarbon gases have been analysed from 21 samples of hydrothermally unaltered and 11 samples of hydrothermally altered metavolcanic rocks from the Säviä volcanic schist zone in the southwestern part of the Proterozoic Vihanti— Pyhäsalmi ...
K. Rasilainen
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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
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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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, 2015 Central Pontides in Northern Turkey is a key area, comprising variably metamorphosed and deformed low-grade metavolcanic rocks. In this study we report the geochemical characteristics of the Kösedağ metavolcanics (KMV), and infer their tectonomagmatic ...
Göncüoğlu, Mehmet Cemal +2 more
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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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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)
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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
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