Rb-Sr whole-rock isotopic study of late Archaean and early Proterozoic granitoid intrusions, Kainuu, Eastern Finland [PDF]
Bulletin of the Geological Society of Finland, 1988 A tonalite-granodiorite-granite suite emplaced during the late Archaean D3 deformational phase yields a six point isochron age of 2,500 ± 270 Ma and an initial 87Sr/86Sr of 0.7044 ±0.0018.
A.N. Halliday +2 more
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Записки Горного института, 2021 In order to expand and popularize knowledge about the stone decoration of Saint Petersburg, we present new data on the mineralogy and petrography of the famous Thunder-Stone, the parts of which were the basis for the monument to Peter the Great – the ...
Andrei G. Bulakh +3 more
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Surface weathering of rapakivi granite outcrops – implications for natural stone exploration and quality evaluation [PDF]
Estonian Journal of Earth Sciences, 2008 Implications of surface weathering of rapakivi granite outcrops for natural stone evaluation were studied in the Wiborg rapakivi granite batholith in southeastern Finland.
Härmä, Paavo, Selonen, Olavi
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Geology and geochemistry of the Redrock Granite and anorthosite xenoliths (Proterozoic) in the northern Burro Mountains, Grant County, New Mexico, USA [PDF]
, 2002 Mineral ages from the A-type granites and anorthosite xenoliths in the Redrock area in the northwestern Burro Mountains in southwestern New Mexico cluster around ~1220–1225 Ma and provide yet another example of bimodal igneous activity during this time ...
Ilmari Haapala +5 more
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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 +5 more
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The origin of the Palaeoproterozoic AMCG complexes in the Ukrainian Shield : new U-Pb ages and Hf isotopes in zircon [PDF]
, 2017 This research gained financial support granted by the Royal Society, UK (2006/R4 IJP), and the Swedish Institute, Sweden. This paper is NORDSIM contribution number 484, and publication no. 62 of the Large Igneous Provinces – Supercontinent Reconstruction
Bilan, Olena, +11 more
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REE-bearing minerals in the Rapakavi Grante, Southern Finland
Open Geosciences, 2015 The studied rock samples belong to the classic1615–1645 Ma Wiborg Rapakivi granite terrane of southeasternFinland. Geochemical studies show that the rapakivigranites and associated rocks form metaluminousto peraluminous A-type granites and plot in the ...
Al-Ani Thair
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Hybridization in the subvolcanic Jaala-Iitti complex and its petrogenetic relation to rapakivi granites and associated mafic rocks of southeastern Finland [PDF]
Bulletin of the Geological Society of Finland, 1995 The 1630 Ma Jaala-Iitti complex is an example of bimodal rapakivi granite magmatism in which the interaction of granite and diabase magmas have led locally to hybridization.
P.T. Salonsaari
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Magmatismo alcalino potássico saturado em SiO 2 na porção central do Cráton Amazônico, extremo sul do Domínio Uatumã-Anauá, NE do Amazonas, Brasil [PDF]
, 2017 Este trabalho analisa o registro do magmatismo alcalino potássico saturado-SiO 2 do Quartzo-Monzonito Castanhal e do Quartzo-Sienito Ladeira da Vovó. Essas rochas estão localizadas próximas à borda norte da Bacia do Amazonas.
Dantas, Elton Luiz +3 more
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Remanent magnetization of two intrusive bodies in southeastern Finland [PDF]
Bulletin of the Geological Society of Finland, 1978 Direction of natural remanent magnetization (NRM) was measured for a diabase from the intrusive contact of rapakivi granite (1650 Ma) and for a granodiorite intrusion (1810 Ma).
K.J. Neuvonen
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