Corpus ID: 52231779. Geophysical Studies of the Raahe-Ladoga Shear Complex in the Iisalmi Area of Finland @inproceedings{Zaher2017GeophysicalSO, title={Geophysical Studies of the Raahe-Ladoga Shear Complex in the Iisalmi Area of Finland}, author={M. Zaher and M. Pirttij{"a}rvi and T. …
The Bulai intrusive is an important time marker in the tectono-metamorphic evolution of the Central Zone of the Limpopo Complex. The host-rock gneisses show one generation of garnet Cited by: 9. Tectonic mélange is an ideal research target to use to decipher the tectono-metamorphic evolution of an orogenic belt, and therefore it is necessary ...
are the Pajala Shear Zone in northern Sweden and the Russian North Karelia Shear Zone in the east. Stage D4 created a conjugate shear system called the Finlandia Shear System, the type example of which is the Oulujarvi Shear Zone. This is a NE-SW trending sinistral strike-slip shear zone more than 250 km long and 20-30 km wide across
We have studied geophysical properties of the Raahe-Ladoga Shear Complex, a major NW-SE trending strike-slip shear zone in Central Finland. Aeromagnetic and airborne electromagnetic data from the Raahe-Ladoga Shear Complex, provided by the Geological Survey of Finland, were processed and interpreted in combination with the regional gravity data ...
Contact measurements carried out in Lake Ladoga during the LADEX-80 experiment shown that generation of high frequency IW in the lake resulted from shear unstability of subsurface currents associated with strong current gradients [16]. Periodic current strengthens and reductions result from large-scale wind stress variations.
2017 (English) In: Geophysica, ISSN 0367-4231, E-ISSN 2324-0741, Vol. 52, no 2, p. 43-67 Article in journal (Refereed) Published Abstract [en] We have studied geophysical properties of the Raahe-Ladoga Shear Complex, a major NW-SE trending strike-slip shear zone in Central Finland.
Part 2: From an Obligation of the Lerned Elite to Citizen Science; Mohamed Abdel Zaher, Markku Pirttijärvi and Toivo Korja, Geophysical Studies of the Raahe-Ladoga Shear Complex in …
The Raahe–Ladoga Shear Complex is a major crustal structure representing the Archaean–Palaeoproterozoic boundary in the Fennoscandian Shield. The complex developed during the Svecofennian Orogeny ( c. 1.9 – 1.8 Ga) beginning with regional thrust tectonic phases D1 and D2, followed by large-scale shearing events D3 and D4.
luoteeseen suuntautuva Raahe–Laatokka-siirrosvyöhyke (RLZ, Raahe-Ladoga Zone), sekä koilliseen suuntautuva Oulujärven hiertovyöhyke (OSZ, Oulujärvi Shear Zone) (Kuva 1) (Puustjärvi 1999). Pyhäsalmen malmio on osa Vihanti–Pyhäsalmi-malmivyöhykettä, johon
Part 2: From an Obligation of the Lerned Elite to Citizen Science; Mohamed Abdel Zaher, Markku Pirttijärvi and Toivo Korja, Geophysical Studies of the Raahe-Ladoga Shear Complex in …
Feb 07, 2020· General geology of the southeastern part of the Raahe-Ladoga Shear zone (RLSZ). a The Jäppilä-Virtasalmi block in Eastern Finland belongs to the older Svecofennian 1.93–1.91 Ga magmatic rocks and is comparable with the Vihanti-Pyhäsalmi belt.b The study area is located within the southeastern corner of the Jäppilä-Virtasalmi block in the Viholanniemi suite.
Oct 01, 2015· A large-scale wrench fault zone, the Raahe-Ladoga shear complex (RLSC), transects the western part of the Iisalmi complex, the Outokumpu area and the Savo belt (Korsman and Glebovitsky, 1999). The Central Finland granitoid complex (1.8–1.9 Ga) consists mainly of granitoid rocks and minor amounts of supracrustal units and gabbroic plutons ...
The Raahe – Ladoga Shear Complex (RLSC), discussed in this paper, is an example of these. 2) Shear system: sets of shear structures in which individual members have the same age
facies shear zones, Bergen Arcs, western Norway: ... pattern) is divided by the Raahe-Ladoga megashear. I GEOLOGICAL AND TECTONIC FRAMEWORK Bergen Arcs, western Norway ... Intrusion of the complex was followed by granulite facies metamorphism at 1000 MPa and 850 "C …
The Raahe–Ladoga Shear Complex (RLSC) represents a major, c. 100 km wide, NW-SE trending system of vertical shear zones, wrench faults and intervening crustal blocks in the central part of the Fennoscandian Shield (Woodard et al., 2015). It sepa-rates the partly reworked Archaean Karelia Craton and folded and metamorphosed Pal-
Jun 30, 2015· Korsman, K. (1988). Tectono-metamorphic evolution of the Raahe-Ladoga zone, Introduction. (G. S. Finland, Ed.) Bulletin 343, 5-6. Kuivamäki, A. W. …
Raahe Ladoga Shear Complex (RLSC) is a ~100 km wide, NW - SE striking set of strongly sheared rocks and intervening crustal blocks in which antecedent structures are preserved. These were formed by longterm and multiphase - Svecofennian convergent tectonic evolution and consist of supracrustal paragneisses and intrusive rocks. The latter are
Nov 13, 2020· Further west, the actual deep transition from Archean to Proterozoic domain is approximately marked by the dominantly metasedimentary rocks of the Savo belt (e.g., Mikkola et al., 2016) that coincides with the crustal scale NW–SE Raahe-Ladoga shear zone (Sorjonen-Ward, 2006; Lahtinen et al., 2016).
Jul 25, 2015· Structure of the Raahe - Ladoga Shear Complex. In: Lithosphere 2012 : Seventh Symposium on the Structure, Composition and Evolution of the Lithosphere in Finland, Espoo, November 6-8, 2012 : programme and extended abstracts.
The Otso gold deposit is in the 450 km long Savo Belt, immediately adjacent to the Raahe-Ladoga suture. The Savo Belt comprises supracrustal mafic-ultramafic volcanic and volcano sedimentary rocks, and accretionary prism nappe complexes, which have been intruded by mafic plutons and several generations of granitoid stocks and dykes.
Geophysical Studies of the Raahe-Ladoga Shear Author: Mohamed Abdel Zaher, Markku Pirttijärvi, Toivo KorjaGeophysical Studies of the Raahe-Ladoga Shear Reques
The Raahe–Ladoga Shear Complex is a major crustal structure representing the Archaean–Palaeoproterozoic boundary in the Fennoscandian Shield. The complex developed during the Svecofennian Orogeny (c. 1.9 – 1.8 Ga) beginning with regional thrust tectonic phases D1 and D2, followed by large-scale shearing events D3 and D4. The Pielavesi Shear Zone is a vertical north–south-trending shear ...
In the NW Ladoga Lake region the southwestern margin of the Raahe-Ladoga zone is defined by the Meijeri thrust (Baltibayev et al., 1996) separating the Svecofennian formations from the Raahe-Ladoga zone about 15 km north of Puutsaari.Svecofennian supracrustal rocks in the NW Ladoga Lake area comprise a metasedimentary assemblage of schists ...
from the Raahe-Ladoga zone about 15 km north of Puutsaari. Svecofennian supracrustal rocks in the NW Ladoga Lake area comprise a metasedimentary assemblage of schists, gneisses and calc-silicate rocks. The Svecofennian formations in the region are divided into two major blocks or terranes separated by the NW trending Priozersk shear zone.
Orogenic gold provinces in the Svecofennian domain occur in three arc complexes: in the 1.93-1.87 Ga primitive arc complex along the collision zone (e.g. Savo belt in the Raahe-Ladoga zone) between the Svecofennian and Karealian domains (Laivakangas province), in the 1.90-1.87 Ga Central Svecofennian accretionary arc complex (Seinäjoki, Tampere and Pirkkala provinces) and in the
= Bothnia-Senja shear system, MOL = Malangen-Onega Lineament, PC = Pudasjärvi Complex, PSZ = Pajala Shear Zone, RLZ = Raahe-Ladoga Zone (modified after Bergh et al. 2014). b) Geology of the study area with reference to geochronology work conducted in …
We have studied geophysical properties of the Raahe-Ladoga Shear Complex, a major NW-SE trending strike-slip shear zone in Central Finland. Aeromagnetic and airborne electromagnetic data from the Raahe-Ladoga Shear Complex, provided by the Geological Survey of Finland, were processed and interpreted in combination with the regional gravity data of the Finnish Geodetic Institute and the ...
Structure of the Raahe –Ladoga Shear Complex E. Lanne. Coda waves of local earthquakes: A case history from northern Finland 59 E. Lehtonen, T. Halkoaho, P. Hölttä, H. Huhma, E. Luukkonen, E. Heilimo 63 and A. Käpyaho. Constraining the age and evolution of Archean greenstone belts