Results 21 to 30 of about 1,513 (118)
Journal of Geophysical Research: Solid Earth, Volume 128, Issue 3, March 2023., 2023 Abstract Geophysical logs collected from a deep borehole drilled into the North American Craton in Northeastern Alberta shed valuable light on the state of stress in stable cratons. Observed breakout (BO) azimuths rotate between three depth intervals, ranging from 100° at 1,650–2,000 m to 173° at 2,000–2,210 m, and finally to 145° at the bottom.
Wenjing Wang +2 more
wiley +1 more source
Meteoritics &Planetary Science, Volume 57, Issue 11, Page 2063-2080, November 2022., 2022 Abstract The Keurusselkä structure is one of Finland's 12 meteorite impact structures—one of the world's oldest (1150 ± 10 Ma) and the largest of its kind in Finland. Findings of numerous well‐formed shatter cones in a wide area have helped define and prove Keurusselkä's impact origin.
Satu Hietala +2 more
wiley +1 more source
Petrophysics of Chicxulub Impact Crater's Peak Ring
Journal of Geophysical Research: Solid Earth, Volume 127, Issue 5, May 2022., 2022 Abstract A new set of physical property measurements was undertaken on 29 peak‐ring samples from the IODP‐ICDP Expedition 364. Among the studied lithologies, the dominant one recovered in the peak ring consists of shocked granitoid rocks (19 samples).
E. Le Ber +9 more
wiley +1 more source
Natural stone deposits in an assemblage of subhorizontal intrusions - The Kuru granite batholith [PDF]
, 2012 Short communication, no ...
Carl Ehlers +3 more
core +1 more source
Boreas, Volume 51, Issue 2, Page 332-349, April 2022., 2022 In this study, we analysed a ~54‐m sediment core consisting of Quaternary sediments overlying the Neoproterozoic Muhos Formation in central western Finland, adjacent to the Gulf of Bothnia. The sediments recovered were logged, and their sedimentological characteristics defined.
Tiina Eskola, Juha P. Lunkka
wiley +1 more source
1.88 Ga granitoids at Sorsakoski, Central Finland: A-type magmatism within the Raahe-Ladoga suture zone [PDF]
Bulletin of the Geological Society of FinlandFour quartz monzonite – granite intrusions forming the Sorsakoski granite lithodeme, are found within the Raahe-Ladoga suture zone in Central Finland. The prevailing potassium feldspar megacrystic quartz monzonites and granites form a bimodal association
Perttu Mikkola +3 more
doaj +1 more source
Meteoritics &Planetary Science, Volume 57, Issue 4, Page 830-849, April 2022., 2022 Abstract Impact crater central peaks and peak ring complexes are important exploration targets for future missions to other planetary bodies, because they provide access to material uplifted from lower crustal levels. Material exposed there could also provide chronological constraints on crater formation events. Therefore, it is essential to understand
Romain Tartèse +2 more
wiley +1 more source
The Oripää granite, SW Finland: characterization and significance in terms of Svecofennian crustal evolution [PDF]
, 2001 Granitoid rocks of the Finnish Svecofennian have recently been at the focus of active research and new ideas regarding their petrogenesis and tecton-ic evolution have been presented by several ...
Mikko Nironen, Tapani Rämö
core +1 more source
Journal of Geophysical Research: Atmospheres, Volume 126, Issue 23, 16 December 2021., 2021 Abstract Here, we present a multi‐season study of ice‐nucleating particles (INPs) active via the immersion freezing mechanism, which took place in north‐central Argentina, a worldwide hotspot for mesoscale convective storms. INPs were measured untreated, after heating to 95°C, and after hydrogen peroxide digestion.
Baptiste Testa +11 more
wiley +1 more source
New monazite U-Pb age constraints on the evolution of the Paleoproterozoic Vaasa granitoid batholith, western Finland [PDF]
, 2016 The Vaasa batholith, western Finland, is a large, peraluminous granitoid pluton that crystallized at 1.88-1.87 Ga during the culmination of the Svecofennian orogeny.
Hölttä, Pentti +4 more
core +2 more sources