Results 91 to 100 of about 749 (183)

Geometry and kinematic evolution of ductile shear zones in the Ersfjord Granite (1.79 Ga), West Troms Basement Complex: A Svecofennian accretionary thrust system [PDF]

open access: yes, 2018
The Ersfjord Granite is a 1.79 Ga felsic intrusion in the geological region of West Troms Basement Complex (WTBC). Its intrusion history and evolution relative to surrounding Neoarchean TTG-gneisses has until now been poorly understood, providing the ...
Haaland, Linda Cecilia
core  

The effect of low-temperature annealing on discordance of U-Pb zircon ages. [PDF]

open access: yesSci Rep, 2021
Herrmann M   +5 more
europepmc   +1 more source

Lateral spreading in the Svecofennian mid-crust revealed by seismic attribute analysis

open access: yes, 2014
In orogenic belts, crustal thickening precedes rheological weakening of the middle and lower orogenic crust leading to lateral spreading and, ultimately, to collapse of an orogen. Recent studies have implied similar development in the middle crust during
Torvela, Taija   +4 more
core  

Late Svecofennian sedimentary basins in the crystalline basement of NE Poland and adjacent area of Lithuania: ages, major sources of detritus, and correlations [PDF]

open access: yes, 2016
The Precambrian basement of Lithuania and NE Poland, much of which is metasedimentary paragneiss, can be accessed only by cores from deep boreholes.
Wiszniewska, Janina   +3 more
core  

Petrography and whole-rock geochemical characteristics of Västervik granitoids to syenitoids, southeast Sweden: constraints on petrogenesis and tectonic setting at the southern margin of the Svecofennian domain

open access: yes, 2011
Granitoid to syenitoid petrogenesis along the Laurentia-Baltica continental margin occurred in two cycles. Within the Fennoscandian Shield, the first cycle is correlated with the 1.95-1.8 Ga Svecofennian domain and the second is correlated with the 1.85 ...
Nolte, Nicole   +7 more
core   +1 more source

1.90-1.88Ga arc magmatism of central Fennoscandia: geochemistry, U-Pb geochronology, Sm-Nd and Lu-Hf isotope systematics of plutonic-volcanic rocks from southern Finland

open access: yesGeologica Acta, 2016
The earliest Svecofennian magmatism in southern Finland has been dated at 1.90-1.88Ga. As an example of this, the Orijärvi (ca. 1.89Ga) and Enklinge (ca.
J. KARA   +5 more
doaj  

Geological, petrographic and geochemical evaluation of two Svecofennian ultramafic serpentinized bodies in Pernaja, SE Finland [PDF]

open access: yes, 2019
When mafic-ultramafic rocks get encountered with fluids in conditions of low temperature and pressure, they are subject to an alteration form known as serpentinization.
Ingves, Jonas
core  

A seismic study of the mid- and lower-crust beneath the sea of Bothnia: BABEL line 1 [PDF]

open access: yes, 1994
In the Autumn of 1989, Durham University took part in the BABEL Project, a collaboration of scientists from five nations recording wide angle and normal incidence seismic data in the Baltic Shield.
Graham, Daniel P.
core  

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