...S.B. Nikolaeva; A.A. Nikonov; S.V. Shvarev; M.V. Rodkin Abstract We present results of detailed paleoseismological research at the key site on the flank of the Lake Imandra depression (Kola region, northeast of the Fennoscandian Shield). Study of various groups of paleoseismic deformations...

...Don Schissel; Andrei A. Tsvetkov; Felix P. Mitrofanov; Alexei U. Korchagin Abstract The 2501- to 2446-Ma Federov Pansky layered mafic intrusion in the central part of the Kola Peninsula, Russia, is situated along the northern contact of the Early Proterozoic Imandra-Varzuga rift and Archean granite...

... to several tens of km across) are exposed in the Lake Imandra area, at the western and southwestern margins of the belt of the Imandra–Varzuga Supergroup of Proterozoic supracrustal rocks ( Fig. 1 ). Dokuchaeva et al . (1982 , 1985 ) noted that there is a general similarity in geological structure...

...-Vaara quarry, and in the Salma area (Lake Babinskaya Imandra), studying Belomorian eclogites. The field trips were organized and led by scientists of the Institute of Geology of the Karelian Research Center (KarRC) RAS (Petrozavodsk), the Geological Institute of the Kola Science Center RAS (Apatity...

... ( Gurvich, 1998 , Tables 1 and 3 ); 8 , pelagic clay ( Taylor and McLennan, 1985 ); 9 , phosphates of the Mataiva Atoll (Pacific Ocean) (Shkol’nik et al., 1999); 10 , red-colored and sapropelic muds of the Black Sea ( Gavshin, 1991 ); 11 , sediments of fresh-water Lake Imandra (Kola Peninsula...

... , The Paleoproterozoic Imandra-Varzuga rifting structure (Kola Peninsula): Intrusive magmatism and minerageny : Geodynamics and Tectonophysics , v. 5 , p. 231 – 256 . Chashchin , V.V. , Galkin , A.S. , Ozeryanskii , V.V. , and Dedyukhin , A.N. , 1999 , Sopcha Lake chromite deposit and its...

... of these neotectonic destruction zones determines the largest nodal junctions of blocks in the area of the southern closure of the Lake Lovozero basin and the eastern closure of the Lake Imandra basin. Possibly, the neotectonic inherited uplift of the Khibiny and Lovozero massifs ( Zhirov et al., 2018 ) could...

... of Early Proterozoic layered mafic intrusions covering a wide area of the Fennoscandian Shield. The Fedorova-Pana layered intrusion occurs at the border of the Archean basement and the Proterozoic Imandra-Varzuga volcanic-sedimentary rift structure ( Fig. 1 ). The intrusion has a plate-like shape...

... ) in these minerals undoubtedly involves derivation from two different sources. We suggest that the Ti-(Fe)-Nb-REE oxide mineralization formed in the megaxenolith as a result of interaction of a pre-existing mafic rock(s), probably Proterozoic rocks of the Imandra-Varzuga Supergroup, with metasomatizing oxidizing...

.... Such specific marginal reversals seem to be quite rare in nature. Only two aborted marginal reversals have been described so far. They were discovered at the base of the Koitelainen intrusion, Finland (Latypov et al . 2011 ) and Imandra intrusion, Russia (Egorova & Latypov, 2012 ). This paper presents...

..., Voche-Lambina, YGB, Yona, CBB, Central Belomorian Mafite-Ultramafite (Ophiolite) Belt. Eclogite-bearing complexes: Gr, Gridino, KV, Kuru-Vaara, Sa, Salma. Paleoproterozoic tectonic unit: LGB, Lapland Granulite Belt (Terrane), UGT, Umba Granulite Terrane, TT, Tersk Terrane; paleorifts: IVR, Imandra...

... many small amphibolite bodies with or without garnet, previously interpreted as dismembered greenstones. Several of these bodies near the Salma Strait of Lake Imandra have been recognized as retrogressed eclogites ( Konilov et al., 2004 ). They are lenses concordant with the TTG gneisses; their margins...

... mainly limit our descriptions to the most promising occurrences (Afrikanda, Kovdor, Vuoriyarvi). The 380 Ma Afrikanda melteigite-pyroxenite-olivinite massif ( Wu et al., 2013 ) is situated in the center of the Murmansk Region near Khabozero Bay of Imandra Lake, where it intruded Archean biotite...

... of the same type (or systems with uniform composition of “participants”) by their morphology. Examples include the results of a topographical analysis of the Khibiny and Lovozero Massifs (Kola Peninsula)—small mountain masses, separated only by the narrow strip of Lake Umbozero. These plutons, presumed...

... (Russia) is the largest alkaline intrusion in the world, occupying an area of 1327 km 2 at the current erosion level. It was emplaced at the contact between the Imandra-Varzuga Proterozoic greenstone belt and Archaean metamorphic complexes of the Kola-Norwegian megablock. About 70% of its area...

... coeval intrusions in Russia, such as Imandra, Burakovsky, and the Olanga Complex (e.g., Alapieti et al., 1990 ). Fig. 1. Simplified geologic map of the northeastern part of the Fennoscandian Shield, showing the location of Paleoproterozoic layered intrusions. Modified from Alapieti et al. (1990...

...) and the Central Karelian domain (Lake Vottomuks and Lake Kogu structures, the western flank of the Lekhta structure) of the Karelian province of the Fennoscandian Shield and compared them with the coeval volcanic rocks of the Kola–Norwegian province and the intrusive rocks of the Karelian and Belomorian provinces...

... – tonalite–trondhjemite–granodiorite (TTG) gneisses; supracrustal suites, 2.5–3.0 Ga. Pechenga (PZ) and Imandra–Varzuga (IVZ) zones of the Paleoproterozoic Polmak–Pasvik–Pechenga–Imandra–Varzuga rift. The white lines mark the major sutures (thrust–shear zones) that border the Lapland–Kola orogen...