Results 61 to 70 of about 343 (176)

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

New evidence of the Vuoksi River origin by geodynamic cataclysm [PDF]

Bulletin of the Geological Society of Finland, 2018
The territory of investigations is located in the SE periphery of the Fennoscandian Shield. It served as an arena of periodic significant restructuring of the hydrographic network associated with the filling and discharge of large late-glacial and ...
D.A. Subetto, S.V. Shvarev, A.A. Nikonov, N.E. Zaretskaya, A.V. Poleshchuk, M.S. Potakhin   +5 more
doaj   +1 more source

Radioisotopic age constraints of the Cambrian Ritland impact structure, Norway

Meteoritics &Planetary Science, Volume 60, Issue 9, Page 2223-2238, September 2025.
Abstract Secondary ion mass spectrometry U‐Pb geochronology has been performed on zircon grains separated from impact melt rock from the 2.7 km‐in‐diameter Ritland impact structure, southwestern Norway. Scanning electron microscope‐based imaging techniques, including electron backscatter diffraction analysis, reveal various zircon grain microtextures ...
William R. Hyde, Steven J. Jaret, Gavin G. Kenny, Anders Plan, Elias J. Rugen, Martin J. Whitehouse, Sanna Alwmark   +6 more
wiley   +1 more source

Multi‐million‐year evolution of the Greenland Ice Sheet in Inglefield Land, North Greenland

Journal of Quaternary Science, Volume 40, Issue 6, Page 1056-1069, August 2025.
ABSTRACT Information on past sensitivity of the Greenland Ice Sheet to climate change is of importance for optimizing models simulating the future evolution of ice mass loss. While the ice‐sheet change during the Lateglacial and Holocene is relatively well constrained, the long‐term (multi‐million‐year) evolution of the Greenland Ice Sheet remains ...
Anne Sofie Søndergaard, Jane Lund Andersen, Nicolaj Krog Larsen, Olivia Steinemann, Negar Haghipour, Jesper Olsen, David Lundbek Egholm   +6 more
wiley   +1 more source

Cosmogenic Production, Sea Level and Tephra Signals in 10Be From Black Sea Sediments During Termination 2

Geophysical Research Letters, Volume 52, Issue 11, 16 June 2025.
Abstract We aim to isolate predominantly solar modulated (multi‐decadal to centennial) production changes in a 10Be record from Black Sea sediments covering Termination 2. In addition to the effects of varying climate and sedimentation, sea level rise and tephra‐driven Be relocation introduced non‐production biases into our 10Be (and 9Be) records ...
Markus Czymzik, Marcus Christl, Helge W. Arz   +2 more
wiley   +1 more source

A Mechanistic Look at the Amphibolitization of Mafic Crust: Insights From the Kråkeneset Gabbro Body, Western Gneiss Region, Norway

Journal of Metamorphic Geology, Volume 43, Issue 4, Page 385-405, May 2025.
ABSTRACT Fluid–rock interactions play a key role in the formation, evolution and recycling of the Earth's crust. For fluids to infiltrate rocks and enable and sustain fluid‐mediated mineral transformations, fluid pathways are required. In this study, we examined the potential mechanisms of formation of such pathways via detailed mineralogical ...
Saskia Grund, Timm John, Johannes C. Vrijmoed, Håkon Austrheim, Torgeir B. Andersen   +4 more
wiley   +1 more source

Scheme of mineral facies of metamorphic rocks and its application to the Fennoscandian shield with representative sites of orogenic gold mineralization

Transactions of the Karelian Research Centre of the Russian Academy of Sciences, 2015
Our recent studies of metamorphism within the Fennoscandian (or Baltic) Shield area with representative sites of orogenic gold mineralization based on the scheme of mineral facies of metamorphic rocks introduced earlier inspired thorough revision of that
Сергей Алексеевич Бушмин, Виктор Андреевич Глебовицкий, Sergey Bushmin, Viktor Glebovitsky   +3 more
doaj   +1 more source

Thiobacillus as a key player for biofilm formation in oligotrophic groundwaters of the Fennoscandian Shield. [PDF]

NPJ Biofilms Microbiomes, 2023
Lopez-Fernandez M, Westmeijer G, Turner S, Broman E, Ståhle M, Bertilsson S, Dopson M.   +6 more
europepmc   +1 more source

Carbonatite complexes of circular (ring) and linear structural-morphological type: the comparison of fenite haloes at the example of Alno (Sweden) and Chernigovka (Ukraine) massifs

Мінеральні ресурси України, 2015
Mineralogical, petrographic and geochemical features of fenitization halos of circular (ring) and linear carbonatite complexes, Alno (Sweden) and Chernigovka (Ukraine), respectively, have been investigated.
Yu. Ye. Nykanorova, I. I. Lazareva, S. Ye. Shnyukov, O. V. Kovtun   +3 more
doaj  

The urosozero greenstone structure (Fennoscandian shield): geology, composition, age and metamorphism of the volcanics

Transactions of the Karelian Research Centre of the Russian Academy of Sciences, 2016
The results of detailed study of the Urosozero greenstone structure (northwestern part of the Vodlozero domain) of the Fennoscandian Shield are presented. The composition and the U-Pb zircon age of the volcanic rocks were studied. The Urosozero structure
Наталия Александровна Арестова, Анастасия Владимировна Юрченко, Валерий Петрович Чекулаев, Светлана Борисовна Лобач-Жученко, Глеб Алексеевич Кучеровский, Елена Николаевна Лепехина, Natalia Arestova, Anastasia Yurchenko, Valery Chekulaev, Svetlana Lobach-Zhuchenko, Gleb Kucherovsky, Elena Lepekhina   +11 more
doaj   +1 more source