Results 41 to 50 of about 343 (176)
Komatiitic explosive volcanism and its tectonic setting in Finland, the Fennoscandian (Baltic) Shield [PDF]
Bulletin of the Geological Society of Finland, 1990 The variously explosive komatiitic volcanism in Finland was virtually confined to the Archaean continental segment, where it occurred in the Lapland and Kuhmo‒ Suomussalmi greenstone belts between 3.0 Ga and 2.5 Ga, in the continental borderland at 1.97 ...
M. Saverikko
doaj +1 more source
Ice Phenology and Thickness in Small Arctic Lakes: Field Observations and Mechanistic Controls
Water Resources Research, Volume 62, Issue 1, January 2026.Abstract The Arctic is the fastest‐warming region globally. Lake ice is a sentinel indicator of Arctic change, with wide impacts on hydrological regimes, biodiversity, and ecosystem services. While small lakes are ubiquitous across northern boreal and tundra zones, ice observations remain biased toward large lakes with distinct freezing and melting ...
Ludwig Strötz +4 more
wiley +1 more source
8: Precambrian geodynamics and ore formation: The Fennoscandian Shield [PDF]
Ore Geology Reviews, 2005 Abstract Compared with present-day global plate tectonics, Archaean and Palaeoproterozoic plate tectonics may have involved faster moving, hotter plates that accumulated less sediment and contained a thinner section of lithospheric mantle. This scenario also fits with the complex geodynamic evolution of the Fennoscandian Shield from 2.06 to 1.78 Ga ...
Pär Weihed +7 more
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Luminescence analysis of a postglacial landscape in northeastern Norway and northern Finland
Boreas, Volume 55, Issue 1, Page 164-181, January 2026.Portable optically stimulated luminescence (pOSL) analysis allows rapid relative dating of sediments that potentially can be calibrated against known OSL ages to provide an age estimate for landforms across a large area. This study uses 186 pOSL measurements and 20 OSL ages to investigate the postglacial landscape evolution inside the Younger Dryas ...
Alastair Goodship +2 more
wiley +1 more source
THE STRUCTURE OF LOW-VELOCITY ZONES IN THE MANTLE OF THE NORTHERN EUROPE
Transactions of the Karelian Research Centre of the Russian Academy of Sciences, 2015 The areas of low-velocity middle mantle shift into the transition zone are distinguished according to 3-d P-velocity model of the Fennoscandian shield mantle and its surroundings using Taylor approximation method.
Татьяна Цветкова +5 more
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Optimal configuration of a micro-earthquake network [PDF]
Advances in Geosciences, 2013 This study simulates automatic event detection and location performance of a micro-earthquake network centred around a future power plant site in Finland, Fennoscandian Shield.
O. Valtonen +4 more
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Highly varying radiogenic heat production in Finland, Fennoscandian Shield [PDF]
Tectonophysics, 2019 Abstract Radiogenic heat production in Finland has been previously studied using airborne gamma-ray surveys and glacial till measurements alike. For the first time, this paper presents a detailed survey on the spatial variation in radiogenic heat production determined using outcrop samples obtained from all important lithologies of the country.
Toni Veikkolainen, Ilmo T. Kukkonen
openaire +2 more sources
Microbialite Niches Across the Archean and Paleoproterozoic
Geophysical Research Letters, Volume 52, Issue 20, 28 October 2025.Abstract Changes in microbialite abundance during the Archean and Paleoproterozoic have been attributed to a variety of environmental and biological factors, yet past work looking at large‐scale patterns of microbialite abundance generally assumes shallow marine deposition rather than incorporating specific settings.
C. M. Howard, N. D. Sheldon
wiley +1 more source
Известия высших учебных заведений: Геология и разведка, 2017 A new chronostratic scheme of South-East (SE) Fennoscandia has been developed, based on the International Stratigraphie Scale, taking into account some elements of the Common Stratigraphic Scale of Russia and the regional stratigraphic scheme of the ...
V. S. Kulikov +2 more
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Geochemistry, Geophysics, Geosystems, Volume 26, Issue 10, October 2025.Abstract Ocean‐wide “Heinrich event” layers marked by weakly magnetic dolomitic ice‐rafted detritus (IRD) from the Hudson Bay region are a prominent signature of Laurentide Ice Sheet surges. Contrary to intuition, the Heinrich layers of the Ruddiman Belt IRD exhibit maxima of magnetic susceptibility. Building on IRD petrology and abundance in sediments
S. Bukar +6 more
wiley +1 more source