raahe ladoga shear complex

Constraints over the age of magmatism and subsequent ...

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.

Mineral Deposits of Finland | ScienceDirect

The mine lies within the north-western section of the Raahe-Ladoga suture zone that extends up to 450km in length. Structurally, the deposit is complex with various types of intrusive rocks cross cutting the metamorphosed and folded sedimentary rocks and volcanic schist belts.

AVAA - Savo domain

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

Geophysical Studies of the Raahe-Ladoga Shear Complex in ...

Oct 20, 2016· 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 D 1 and D 2, followed by large-scale shearing events D 3 and D 4.

ILP - Finnish Lithosphere Meeting - Helda

The volcano-sedimentary host rocks belong to a 1.93–1.92 Ga island arc that occurs along the northwestern parts of the Raahe-Ladoga shear complex. The stratigraphy in the region is divided into two units, a lower bimodal volcanic unit conforming to the Pyhäsalmi group and an upper volcano-sedimentary association defined as the Vihanti group.

Helsingin yliopisto - Seismologian laitos

The Savo belt also coincides with the lithosphere-scale Raahe-Ladoga shear zone (RLSZ), which has been interpreted to represent the deep suture between the Archean Karelian province and the Proterozoic Svecofennian domain, or the A–P boundary (Lahtinen et al., 2015).

Geophysical Studies of the Raahe-Ladoga Shear Complex in ...

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.

Timing and geochemistry of potassic magmatism 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 …

AVAA - Savo domain

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 D 1 and D 2, followed by large-scale shearing events D 3 and D 4.

Zircon and monazite geochronology of deformation in the ...

Structure of the Raahe –Ladoga Shear Complex 15:30 - 16:00 J. Salminen, S. Mertanen, D. Evans, and Z. Wang Paleomagnetic and geochemical studies of the Subjotnian Satakunta diabase dykes – implications to Mesoproterozoic supercontinent Nuna 16:00 - 16:30 R. Alviola Distribution of rare element pegmatites in Finland

[PDF] Combined Inversion of Airborne Electromagneticand ...

The belt also coincides with the lithosphere-scale Raahe-Ladoga shear zone (RLSZ), which has been interpreted to represent the deep suture between the Archean Karelian province and the Proterozoic Svecofennian domain (e.g., Sorjonen-Ward, 2006).

Timing of orogenic gold in the Svecofennian domain ...

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

Laiva Gold Project - Mining Technology | Mining News and ...

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.

Geology, alteration and lithogeochemistry of the ...

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

A Review of Gold Mineralization Styles in Finland ...

Economically, the most significant VMS camp in Finland is the Vihanti-Pyhäsalmi belt in the NW part of the Raahe-Ladoga Shear Zone (RLSZ; Fig. 1), a collage of distinct shear zones, where seven ...

Laiva Gold Project - Mining Technology | Mining News and ...

complex (the spine1 + quartz zone). They noted that the ... syn-metamorphic SSE-directed shear related to over- thrusting of the Kohistan Arc over the Indian Plate at c. 50 Ma, (ii) post-metamorphic thrusting, resulting ... Blocks in the Raahe-Ladoga Zone of central Finland. The

Helsingin yliopisto - Seismologian laitos

The frequency domain airborne electromagnetic (AEM) data of the Geological Survey of Finland (GTK) is transformed into apparent resistivity because it's geologically and physically more meaningful and easier to comprehend than the in-phase and quadrature component of the original data. The traditional transformation method based on a model of homogeneous conductive half-space has two main ...

FIRE 3A Tectonic overview | FIN-EPOS | University of Helsinki

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 Vihänti-Pyhäsalmi VMS belt | Request PDF

Sep 01, 2015· Although the ramification of the various shear zones in northern Sweden is complex (Bergman et al., 2001, Bergman et al., 2006), a temporal correlation with the Malangen-Onega and Raahe-Ladoga mega-shear zone systems (Kärki et al., …

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. The Pielavesi Shear Zone is a vertical …

of the Geological Society, London, Vol. 1990, pp. 561-562 ...

Oct 01, 2019· The Siilinjärvi carbonatite complex is located in the south-eastern part of the Archean Karelia province, close to the boundary to the Paleoproterozoic Svecofennia province and the NW-SE trending Raahe-Ladoga shear complex (RLSC in Fig. 1a; Kärki et al., 1993).Karelia is the largest of the Archean provinces in the Fennoscandian Shield, separated from the Lapland-Kola province in the ...

10 GEOLOGI 69 (2017) - Geologinen Seura

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.

SKARNOID ROCKS IN THE WESTERN PART OF PITKÄRANTA …

= 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 …

Constraints over the age of magmatism and subsequent ...

north-east shore of Ladoga lake (Republic of Karelia, Russian Federation). This region is situated in the shear zone between Archean Karelian craton (massif) and early Proterozoic Svecofennian belt (Fig. 1). This shear zone is called Raahe-Ladoga zone (Korsman et al. 1988). The Raahe-Ladoga zone has been known as a main tectonic and ore bearing

Zircon and monazite geochronology of deformation in the ...

the Raahe–Ladoga shear complex. In the Cent-ral Finland granitoid complex the deformation took place around 1.88–1.86 Ga, which can indicate that also the Eastern part of the orogen suffered coeval deformation (Nikkilä et al. 2016, Nikkilä 2016). Analog modeling seems a practical tool also in modeling tectonic evolution of an ancient orogen.

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The volcano-sedimentary host rocks belong to a 1.93–1.92 Ga island arc that occurs along the northwestern parts of the Raahe-Ladoga shear complex. The stratigraphy in the region is divided into two units, a lower bimodal volcanic unit conforming to the Pyhäsalmi group and an upper volcano-sedimentary association defined as the Vihanti group.