Results 31 to 40 of about 978 (214)

Intracratonic Palaeoproterozoic granitoids in northern Finland: Prolonged and episodic crustal melting events revealed by Nd isotopes and U-Pb ages on zircon [PDF]

open access: yesBulletin of the Geological Society of Finland, 2007
Zircons from twelve Palaeoproterozoic granitoids from the Central Lapland Granitoid Complex (CLGC) and from the Hetta Complex (HC) in northern Finland were dated using the NORDSIM ion microprobe.
N. Ahtonen, P. Hölttä, H. Huhma
doaj   +1 more source

ON RECENT FAULTS AND PALEOSEISMIC FRACTURES IN THE PALAEOPROTEROZOIC ONEGA STRUCTURE OF THE BALTIC SHIELD

open access: yesTransactions of the Karelian Research Centre of the Russian Academy of Sciences, 2017
Specific morphological structures corresponding to impulsive seismotectonic events were identified within the Onega structure of the Fennoscandian (Baltic) shield of the East European platform.
Андрей Алексеевич Никонов   +5 more
doaj   +1 more source

The Present State of the Kola Peninsula Broadband Seismic Network

open access: yesRussian Journal of Earth Sciences, 2023
This paper provides information about the main parameters of spatial broadband seismic network in the Kola region (the northeastern part of the Fennoscandian Shield). Since 2021 the seismic network has been expanded by five seismic stations and currently
Goev Andrey Georgievich   +5 more
doaj   +1 more source

Microfossil-like tourmaline microlites in early Proterozoic nodular chert at Kiihtelysvaara, eastern Finland [PDF]

open access: yesBulletin of the Geological Society of Finland, 1992
Many Proterozoic silicified sedimentary carbonates have been reported to contain remains of early micro-organisms. One of these localities in the Fennoscandian Shield is the village of Hyypiä at Kiihtelysvaara in eastern Finland, where a nodular chert ...
J. Karhu, H. O'Brien
doaj   +1 more source

Zur letzten Eiszeit im alpinen und nordeuropäischen Raum [PDF]

open access: yesGeographica Helvetica
On the last Glaciation of the Alps and Fennoscandia. During the Pleistocene the Alps and the Fennoscandian Shield were covered several times with extensive ice caps. During the last Ice Age.
G. Glückert
doaj   +1 more source

Stratigraphical section through Lower Cambrian at Söderfjärden, Vaasa, western Finland [PDF]

open access: yesBulletin of the Geological Society of Finland, 1982
The Lower Cambrian sedimentary rocks form a doughnut-shaped deposit on the bottom of the Söderfjärden depression. The sedimentary pile was first established and has now been penetrated by drilling.
J.J. Lehtovaara
doaj   +1 more source

Neoarchean sanukitoids from the Karelian and Bundelkhand cratons: comparison of composition, distribution and geodynamic setting

open access: yesTransactions of the Karelian Research Centre of the Russian Academy of Sciences, 2019
This study presents comparison of distribution and composition of Neoarchean sanukitoid massifs from Karelian (Fennoscandian Shield) and Bundelkhand (Indian Shield) Cratons.
Кумар Батук Джоши   +3 more
doaj   +1 more source

FAULT SYSTEMS IN THE UPPER CRUST OF THE FENNOSCANDIAN SHIELD, THE EAST EUROPEAN PLATFORM

open access: yesГеодинамика и тектонофизика, 2020
Directions of 683 faults located in the southeastern part of the Fennoscandian (Baltic) shield were statistically analyzed, and three orthogonal associations of fault systems were identified in the study area.
V. S. Burtman, S. Yu. Kolodyazhny
doaj   +1 more source

Dynamic features of “Petrozavodsk” seismic station

open access: yesTransactions of the Karelian Research Centre of the Russian Academy of Sciences, 2016
The paper is devoted to the estimability and recordability of seismic events, namely the research of the noise power spectral density (PSD) and its diurnal variation around “Petrozavodsk” seismic station (PTRZ), located within the Onega structure of the ...
Александр Валерьевич Климовский   +5 more
doaj   +1 more source

THE BELOMORIAN ECLOGITE PROVINCE (EASTERN FENNOSCANDIAN SHIELD, RUSSIA): MESO-NEOARCHEAN OR LATE PALEOPROTEROZOIC?

open access: yesГеодинамика и тектонофизика, 2020
A critical discussion of competing models of the geodynamic nature (oceanic or continental subduction) and age (Meso-Neoarchean or Late Paleoproterozoic) of the eclogite facies metamorphism in the Belomorian eclogite province (BEP) is based on the ...
M. V. Mints, K. A. Dokukina
doaj   +1 more source

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