Results 71 to 80 of about 105,826 (191)

Formation mechanism of the Vaasa Batholith in the Fennoscandian shield: Petrographic and geochemical constraints [PDF]

Bulletin of the Geological Society of Finland, 2012
The ~1.88 Ga Vaasa Batholith in western Finland is a large granitoid area (8 000 km2) with gradational contacts against the garnet- and cordierite-bearing diatexite and metatexite migmatites of the Pohjanmaa Belt.
H. Mäkitie, P. Sipilä, H. Kujala, A. Lindberg, A. Kotilainen   +4 more
doaj   +1 more source

Evolution and Provenance of the Polish Rotliegend in the Southern Permian Basin

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 2, February 2026.
Abstract The Southern Permian Basin (SPB) has been extensively explored for ore deposits. However, a comprehensive evaluation of the remaining copper potential, specifically for sediment‐hosted stratiform copper system, remains lacking. This study applies goSPL, an open‐source landscape and stratigraphic evolution model, to reconstruct the Permian rift‐
Beatriz Hadler Boggiani, Claire Mallard, Tristan Salles, Nicholas Atwood   +3 more
wiley   +1 more source

Increased Glacier Melt Across Millennia to Hours Enhances Erosion and Sediment Export Processes

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 2, February 2026.
Abstract Glacial erosion and sediment evacuation are key in shaping polar and mountain landscapes and influencing downstream ecological and social systems. The glacier dynamics and hydrology responsible for these processes are closely linked to hydrological and climatic (hydro‐climatic) conditions.
Ian Delaney, Audrey Margirier, Marjolein Gevers, Matt Jenkin, Tancrède Leger, Ivan Vergara, Julien Seguinot, Guillaume Jouvet, Alan Robert Alexander Aitken, Stuart Lane, Frédéric Herman, Georgina E. King   +11 more
wiley   +1 more source

Lithosphere-asthenosphere system in shield areas of North America and Europe

Annals of Geophysics, 1997
In previous papers surface dispersion data have been combined with the results of deep seismic refraction data to derive a regionalization of the lithosphere-asthenosphere system and to investigate the presence of significant heterogeneity down to depths
P. Pierri, V. Del Gaudio, G. Calcagnile
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, Matti Leppäranta, Kaarina Weckström, Maija Heikkilä, Jan Weckström   +4 more
wiley   +1 more source

Dissolved organic matter composition in the Fennoscandian Shield deep terrestrial biosphere (FT-ICR-MS), 2018 and 2019

, 2021
Copious amounts of organic carbon are stored for long periods of time in deep continental groundwaters. Little is known about its composition and cycling, mainly due to the difficulties in obtaining sample material.
Osterholz, Helena, Dittmar, Thorsten, Tullborg, Eva-Lena, Turner, Stephnie, Kalinowski, Birgitta, Alakangas, Linda, Dopson, Mark   +6 more
core   +1 more source

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, Helena Alexanderson, Joanna Anjar   +2 more
wiley   +1 more source

Revisit of the Fennoscandian Shield along the UPPLAND seismic profile: competitive velocity models [PDF]

Solid Earth
This paper presents a comprehensive re-analysis of seismic data collected along the UPPLAND profile in the Fennoscandian Shield, focusing on the competitive velocity models for P-wave (Vp) and S-wave (Vs) velocities and the Vp/Vs ratio.
T. Janik, R. Lahtinen, M. Bociarska, P. Środa, D. Wójcik   +4 more
doaj   +1 more source

An Eoarchean continental nucleus for the Fennoscandian Shield and a link to the North Atlantic craton

, 2023
Enabling the build-up of continental crust is a vital step in the stabilization of cratonic lithosphere. However, these initial crustal nuclei are commonly either destroyed by recycling or buried by younger rocks.
Whitehouse, Martin J.,, Kemp, Anthony I.S., Kemp, Anthony I.S.,, Waight, Tod,, Whitehouse, Martin J., Valley, John W.,, Waight, Tod, Valley, John W., Petersson, Andreas, Whitehouse, Martin. J., Petersson, Andreas,   +10 more
core   +1 more source

DEEP STRUCTURE OF ORE DISTRICTS OF THE FENNOSCANDIAN AND UKRAINIAN SHIELDS

Proceedings of the Karelian Research Centre of the Russian Academy of Sciences, 2017
New interpretation of geological and seismic data has revealed a correlation of surface structures of large endogenous ore districts of the Fennoscandian and Ukrainian shields with Moho topography and local crustal inhomogeneities. As a result, models of the deep structure of Pechenga, Onega and Kirovograd ore districts based on consistent analysis of ...
Nikolai Sharov, Elvira Isanina, Galina Drogitskaya   +2 more
openaire   +3 more sources