Structural observations and U-Pb mineral ages from igneous rocks at the Archaean-Palaeoproterozoic boundary in the Salahmi Schist Belt, central Finland: constraints on tectonic evolution [PDF]
Bulletin of the Geological Society of Finland, 1999 The study area in Vieremä, central Finland, contains part of Archaean-Palaeoproterozoic boundary. In the east, the area comprises Archaean gneiss and the Salahmi Schist Belt. The rocks of the schist belt are turbiditic metagreywackes, with well-preserved
K. Pietikäinen, M. Vaasjoki
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Palaeoproterozoic adakite- and TTG-like magmatism in the Svecofennian orogen, SW Finland
Geologica Acta, 2021 The Palaeoproterozoic Svecofennian orogen in the Fennoscandian shield is an arc accretionary orogen that was formed at c. 1.92-1.86Ga. Arc accretion, magmatism and the subsequent continent-continent collision thickened the crust up to c. 70km, forming one of the thickest Palaeoproterozic orogens.
VÄISÄNEN, M. +4 more
openaire +10 more sources
The »Bockholm conglomerate» – an intrusive breccia in Åland, SW Finland [PDF]
Bulletin of the Geological Society of Finland, 1979 Three breccias composed of a heterogeneous mixture of rock fragments in a clastic matrix have been studied in the Enklinge area, southwestern Finland.
C. Ehlers
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Journal of Geophysical Research: Biogeosciences, Volume 125, Issue 12, December 2020., 2020 Abstract Peatlands are dominant sources of dissolved organic matter (DOM) to boreal inland waters and play important roles in the aquatic carbon cycle. Yet before peat‐derived DOM enters aquatic networks, it needs to pass through peat‐stream interfaces that are often characterized by transitions from anoxic or hypoxic to oxic conditions.
Karólína Einarsdóttir +5 more
wiley +1 more source
An intrusive-like tectonic breccia in the archipelago of southwestern Finland [PDF]
Bulletin of the Geological Society of Finland, 1986 On an islet in the archipelago of southwestern Finland with metamorphic rocks belonging to the Svecofennian zone it is possible to follow in exposure for a distance of some metres the transition from a layered paragneiss with amphibolite bands to a ...
N. Edelman, L. Bergman, B. Lindberg
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1865 Ma tholeiitic magmatism during an extensional episode of the Svecofennian orogeny: the Kaiplot gabbros in Nagu (Nauvo), southwestern Finland [PDF]
Bulletin of the Geological Society of FinlandThe Svecofennian orogeny in southern Finland has traditionally been divided into two broadly defined compressional stages, the 1.89–1.87 Ga “synorogenic” stage and the ca 1.84–1.81 Ga “lateorogenic” stage.
Olav Eklund, Jussi S. Heinonen
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Mafic-silicic magma interaction in the layered 1.87 Ga Soukkio Complex in Mäntsälä, southern Finland [PDF]
Bulletin of the Geological Society of Finland, 2002 The Svecofennian layered Soukkio Complex (1.87 Ga) in Mäntsälä, southern Finland, consists of layered tholeiitic gabbro and porphyritic calc-alkaline monzonite, quartz monzonite and granite, mingled together.
T.T. Eerola
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Geophysical Research Letters, Volume 52, Issue 9, 16 May 2025.Abstract The Yangtze Craton in South China is generally regarded as an Archean‐Paleoproterozoic continental nucleus with a coherent basement that collided with the Cathaysia Block in the Early Neoproterozoic. Here we reprocessed a 300‐km‐long NW‐trending seismic reflection profile in the eastern Yangtze Craton.
Xiaofan Deng +7 more
wiley +1 more source
Insights into the tectonic evolution of the Svecofennian orogeny based on in situ Lu–Hf dating of garnet and apatite from Olkiluoto, southwestern Finland [PDF]
Solid EarthThe southern Finland granites and associated migmatitic rocks have a complex metamorphic history, being affected by multiple events during the ca. 1.88–1.79 Ga Svecofennian orogeny.
J. Engström +6 more
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Broadband seismic data acquisition and processing of iron oxide deposits in Blötberget, Sweden
Geophysical Prospecting, Volume 73, Issue 1, Page 80-95, January 2025.Abstract In June 2022, an innovative seismic survey was conducted in Blötberget, central Sweden, to evaluate the effectiveness of employing both a broadband seismic source and broadband receivers for mineral exploration in a challenging hardrock setting. The Blötberget mine hosts high‐quality iron oxides, predominantly magnetite and hematite, sometimes
Lea Gyger +8 more
wiley +1 more source