Miarolitic cavities in rapakivi granite on Hästholmen, Loviisa, southeastern Finland [PDF]
Bulletin of the Geological Society of Finland, 1987 Miarolitic cavities are described from drill cores taken from rapakivi granite on Hästholmen, an island about 80 km east of Helsinki. The distribution of cavities between different textural types of rapakivi seems to favour the equigranular medium to ...
K. Lindqvist, V. Suominen
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Review on geology and mineralization of North Korea (I: Precambrian)
Resource Geology, Volume 71, Issue 4, Page 492-513, October 2021., 2021 The Precambrian geotectonic provinces of North Korea contain continental cores and massifs, active continental margins, and rift zones. The Precambrian strata between the eastern North China Craton (NCC) and North Korea are newly correlated considering rearranged stratigraphy in this review.
Bum Han Lee +3 more
wiley +1 more source
Terra Nova, Volume 33, Issue 5, Page 502-510, October 2021., 2021 Abstract Fault‐ and fracture‐hosted multi‐stage mineral assemblages that formed by fracture reactivation and fluid migration, constitute archives of the tectonic evolution of Precambrian cratons. Complex intergrowth patterns of these mineral records often hinder absolute dating of mineralization events for geological models.
Mikael Tillberg +5 more
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Plagioclase-mantled K-feldspar in the Carboniferous porphyritic microgranite of Altenberg-Frauenstein, Eastern Erzgebirge / Krušné Hory [PDF]
Bulletin of the Geological Society of Finland, 2002 The Upper Carboniferous porphyritic microgranite of Altenberg-Frauenstein, formerly known as Granitporphyr (Dalmer 1896) and here abbreviated as GP, forms a 36 km long and up to 18 km wide complex of ring dykes related to the Teplice-Altenberg caldera in
A. Müller, R. Seltmann
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Crustal development in relation to granitic magmatism in regard to D/H partition between coexisting hornblende and biotite in the Svecofennian belt [PDF]
Bulletin of the Geological Society of Finland, 1993 Tie-lines in the σD-XFe diagram of hornblende and biotite in Japanese island arc granites give commonly a similar slope to that derived from the equation of Suzuoki-Epstein's experimental work (1976).
Y. Kuroda +5 more
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The rapakivi granite plutons of Bodom and Obbnäs, southern Finland: petrography and geochemistry [PDF]
Bulletin of the Geological Society of Finland, 1999 The Obbnäs and Bodom granite plutons of southernmost Finland show the typical petrographic and geochemical features of the Proterozoic rapakivi granites in Finland and elsewhere: they cut sharply across the 1900 Ma Svecofennian metamorphic bedrock and ...
P. Kosunen
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Anorogenic granitoids of the Early Precambrian magmatism of the Ukrainian shield [PDF]
Bulletin of the Geological Society of Finland, 1993 The Early Precambrian magmatism of the Ukrainian shield evolved through regular changes in tectonic setting, composition and depth of formation of rocks of three magmatic associations: (1) granitic, (2) diorite-granitic and (3) anorthosite-granitic. They
K.I. Sveshnikov +3 more
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Amphibole: A major carrier of helium isotopes in crustal rocks [PDF]
, 2016 The first evidence for a specific role of amphiboles in He isotope balance of crustal rocks was presented in early contributions by Gerling et al. (1971, 1976).
A.B. Verchovsky +65 more
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Rare metal granites and related rocks of the Ukrainian shield [PDF]
Bulletin of the Geological Society of Finland, 1993 Two rare metal leucocratic granites, Perga and Kamennaya complexes, can be distinquished on the Ukrainian shield. The Perga complex consists of medium- and coarse-grained, mainly porphyric, biotite, riebeckite and aegirine granites, granite porphyries ...
K.Y. Esipchuk +2 more
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Anomalous supply of bioessential molybdenum in mid-Proterozoic surface environments [PDF]
, 2016 We are grateful to A. Sandison and W. Thayalon for skilled technical support, and Mike Porter and an anonymous reviewer, who helped to clarify the manuscript.Peer ...
Lindgren, Paula, Parnell, John
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