Illumination in the literature of a number of topical problems of hydrochloric geology concerning the prevalence of salts in the interior, especially in tectonically deformed complexes, their transformation in different types of structures and kinematic history remains relatively weak. The purpose of the article is to characterize the general tendencies of the kinematic evolution of salts in the course of tectonic development under the influence of the manifestations of salt tectonic and tectonic (orthotectonic) deformations, which determine the final picture of the prevalence of salts. The study was carried out on the basis of a broad critical generalization of literary and authorial material characterizing saline basins of the world and individual reference regions. Integrated approaches and methods of three modern types of analysis of sedimentary geology are used: complex basin, lithogeodynamic and fluid geodynamic. As a result of the analysis, the salt bodies are systematized according to the nature of deformity and morphological features; Three groups of them are distinguished: stratified (undeformed), solanotectonic and orthotectonic. The features of location, morphology, and evolution of bodies of solanotectonic and orthotectonic groups in different tectonic situations are considered. Particular attention is paid to the characterization of allochthonous coverings of the solanotectonic group established only in recent decades and the salt bodies of the covert-folded regions of the orthotectonic group, which have been least studied and illuminated in the literature. It is shown that the presence of these groups in the depths of salts is a widespread and regular phenomenon; The main features of their final placement and morphology are revealed. For the first time, an evolutionary-kinematic analysis of salt bodies was made against the background of tectonic development of the structures containing them. The author draws a number of conclusions about the general trends in the morphokinetic evolution of salt bodies in the interior under the influence of tectonic and tectonic deformations. One of the important conclusions concerns a relatively new stage in the life of salts that completes its kinematic history: the appearance of salts taken from the original location at new stratigraphic levels in the form of subcoated cover-like bodies of injecting and injection-sedimentary nature. Disclosure the significance of such processes shows the role of the phenomena of salt bodies recycling (their rebirth or regeneration) in the ontogenesis of salts, in their tectonic and kinematic history. The results of the research are important in understanding the theoretical and practical problems of salt tectonics, salt geology, oil and gas geology, as well as a number of general problems of tectonics, basin analysis, etc. They can contribute to the predictive assessment of the oil and gas potential of the earth's interior, as well as the solution of the problem of the possible participation of salts in endogenous processes.

Until now, there is a problem of the stratigraphic position and the serial petrogenetic affiliation of the Dzhusinsky volcanic complex and the correlation of the section of the Dzhusa-Dombarovka pyrite-palevolcanic belt of the East Magnitogorsk zone (EMZ) with an similar to age section of the Tanalyk paleovolcanic uplift of the Western Magnitogorsk zone (WMZ). The urgency of this problem is justified by the fact that the Early-Eifelian South Irendyk paleovolcanic complex and the Sukrakovo subcomplex, which completes the section of the South Irendyk complex, contain the large Podolsk pyrite deposit of the Urals (Cu > Zn) type and the average barite-polymetallic East-Podolsk deposit (Zn-Cu-Pb-Ba), located in the Sukrakovo subcomplex. In the Djusa ore-bearing zone, average barite-polymetallic deposits (Dzhusinskoye and Barsuchiy Log) localized in the Dzhusinsky complex, according to our data, also is of Early-Eifelian age. The problem of the geological position of the Dzhusinsky pyrite-bearing complex is of great importance for the prognostic assessment of EMZ for pyrite mineralization. The paper is based on materials of geological survey and science studies, in which the authors took part, as well as on published and fund materials of other researchers. Geological and paleovolcanological materials were obtained by the authors in the process of creating a paleovolcanological map of the Southern Urals at a scale of 1 : 500,000 and compiling numerous more detailed maps for individual ore regions and pyrite ore fields at a scale of 1: 100,000 to 1 : 10,000. Samples for chemical analyzes were selected in Process of thematic works. The study of petrogenic, rare and rare-earth elements was carried out by methods of wet chemistry, atomic absorption, X-ray-fluorescent analysis, ICP-MS. The paper gives a brief facial and petrological-geochemical description of the Sukrakovo, Dzhusa and Lower Zingei paleovolcanic complexes and subcomplexes, provides information on the geology and composition of pyrite barite-polymetallic of East Podolsky, Dzhusinsky and Barsuchiy Log deposits and their stratigraphic position on the basis of conodont fauna materials. The Sukrakovo trachydacitic subcomplex (D₂ef₁ir₅), containing the East-Podolsky barite-polymetallic deposit, belongs to the calc-alkaline transition to the shoshonite petrochemical series. The Dzhusa shoshonite-latite-trachyte trachyriolite complex (D₂ef₁dj), which contains the pyrite-barite polymetallic deposits (Dzhusinsky and Barsuchi Log), is located in the southern part of the East Magnitogorsk zone. In the middle and northern parts of the EMZ there are barren basalt-andesibasaltic Lower-Zingeisky and Irendyksky complexes of calc-alkaline series (D₂ef₁zg; D₂ef₁ir). Synchronous Early-Eifelian age of the Irendyksky Formation of the West-Magnitogorsk Zone, the Dzhusa and Lower Zingei Volcanic Complexes of the East-Magnitogorsk Zone, geodynamic reconstructions were established. The upper stratum of the Irendyk Formation WMZ, the Sukrakovo, the Dzhusa and the Lower Zingei (with the Irendyksky) complexes of the EMZ form the rear island arc, which split in the Late-Eifelian time. Dzhusa complex together with age analogs of the EMZ form a residual (split off) island arc.

The results of analysis of the systematics of Cr, Co and rare earth elements (REE) in ice-rafted sediments (IRS) of the northern part of the Beaufort Cycle (Arctic Ocean) are considered in the article. The IRS was assembled on the ARK-XIV-1/a cruise of the NIS Polarstern in 1998. The exact position of the sources of the IRS present in the ice has not been established to date. This is due, on the one hand, to the complex ice cycle in the Arctic Basin, on the other - a relatively small amount of data on the actual composition of the IRS. According to the views of most researchers, the main IRS supplier is the wide and shallow Siberian Arctic shelf. In the Beaufort Sea, the distinctive features of which are a much narrower shelf and almost constant presence of ice in the summer period, the conditions for the formation of the IRS are not so favorable. The contents of rare and scattered elements in the IRS samples were determined with the help of INAA at GEOKHI RAS. As a result of the research it was established that variations (La/Yb)_N in the IRS from the northern part of the Beaufort cycle are characterized by the values 8.5-15.5. They fully correspond to the average value of this parameter in the suspension of pp. Mackenzie and the Arctic-Red River (8.6 and 8.5) and the mean (La/Yb)_N for the crystalline formations of the Canadian Shield (14.4). In the same range are included, the values of (La/Yb)_N for the suspension of Yana and Lena rivers (8.7 and 12.4), which may indicate the possibility of the presence in the IRS of material borrowed on the shelf of the eastern Laptev Sea. In the Co-Cr diagram, there is no overlapping of the fields of the compositions of the present bottom sediments of the estuary of Yenisei River, on the one hand, and the eastern part of the East Siberian and Chukchi seas, on the other. Although the sediments of the delta of the Mackenzie River, comparable to the precipitation of the estuary of the Yenisei River. by the content of Cr and differ from them by a noticeably lower content of Co. In the Cr-La diagram, the IRS field occupies an essentially isolated position, yet still has a certain overlap with the precipitation fields of the Chukchi Sea and the delta of Mackenzie River. In the diagram (La/Yb)_N-La/Co, the field of IRS composition has a ≈50% overlap with the field of the present bottom sediments composition of the Chukchi Sea. The middle point of the suspension also gravitates towards Lena River, and the point of the Canadian Shield is relatively close, as well as the points of suspension of Mackenzie and Arctic-Red rivers and PAAS. Overlapping of the IRS fields and modern bottom sediments of the Ob and Yenisei estuaries, as well as the east of the East Siberian Sea, on the contrary, is not observed. The data given in the article allow us to conclude that the IRS in the area of the North Pole contains sedimentary material, borrowed both on the shelf of the Beaufort Sea and on the shelves of the eastern part of the Laptev Sea and the Chukchi Sea.

Main subjects for study are the phase-mineral and geochemical composition specific features of Kodinka Formation mudstones. Mudstones build up laminas, beds, pack of beds and strata (up to 9 m). It`s expected that sedimentation occurred in shallow-marine and deltaic (including delta front and prodelta) environments. Mudstone (31 samples) was comprehensive research by using the data of ICP-MS, XRD, XRF, thermal and petrographic analysis. In addition, the lithic fragments of sandstones are used. Samples collected from the most representative Kodinka Formation section (Iset’ River near Kamensk-Uralskiy town). As a result, the following features of mudstones were revealed. 1. Main rockforming minerals are chlorites, illite, illite-smectite mixed-layered minerals (MLM), fine micas, quartz and feldspars, and their content is subject to facial control. 2. In the major element-based discriminant function diagram of Roser and Korsch, the samples of the Kodinka Formation plotted on fields of mafic, intermediate igneous and quartzose sedimentary provenance (mostly). 3. Compositions are enriched in trace elements typical of mafic igneous rocks and depleted in trace elements typical of felsic and alkali igneous rocks. 4. Some evidence of recycling is received, for example in Zr/Sc-Th/Sc diagram the samples depart from the compositional trend. 5. CIA (chemical index of alteration) value vary generally within 61-63 with maximum at 66-77 for calcareous mudstones, CIW (chemical index of weathering) value range within 73-83 and ΣCe/ΣY ((La-Eu)/(Gd-Lu, Y)) value vary within 1.86-3.66 (average 2.7). Specific features of Kodinka Formation mudstones composition are indicative of their terrigenous origin (not first cycle rocks). There were some diverse rock massifs in source area, including cherts, igneous (mafic, intermediate, felsic), metamorphic (quartzite, serpentine rock and shale) units. Source rocks undergone weathering at intermediate semi-arid/semi-humid climate conditions and passive tectonic regime. Very likely that were the block of continental crust (surface of the microcontinent?) which were intensively eroded. Degree of mudstone alteration is different.

The results of study of rocks of the Ilmenogorsk miaskite block - mylonitized miaskites, “sandyites” and monzonitic rocks, which were found for the first time, are presented in the paper. We studied textural-structural features of rock and their mineral and chemical composition. The composition of petrogenic elements in rocks were determined by atomic absobtion method, rare earth, rare and trace elements - ICP-MS method. Microprobe analyses compositions of minerals were made on the scanning electron microscope REMMА-202 M with energy-dispersive console Link systems LZ with Si-Li detector. Correlation of data was performed using the program “Magellanes”. These data allowed us to establish the degree of transformation of rocks and multistage metasomatic processes. The mineral assemblages indicate amphibolite facies of metamorphism, which was accompanied by participation of the F-bearing fluid and formation of specific accessory minerals - highly aluminous titanite and allanite. The highly variable Al contents of these minerals is evidence of high alkalinity at the presence of the fluorine in the fluid. The minerals of the banalsite-stronalsite group in sandyites points to a wide range of temperatures during metasomatic processes. Alteration of rocks results of the change of their chemical composition: the ТiO₂, MgО, СаО, total Fe, and LREE contents increased and SiO₂, Al₂O₃, and К₂O contents decreased. The rocks are characterized by high REE contents in contrast to the host mylonitized miaskites and the high contents of lithophile elements (Rb, Ba, Sr, Th) and low contents of Co, Cu, W, Ni, Cr, and Pb. Our data indicate the metasomatic origin of the studied rocks. The increase in the contents of trace and rare earth elements from milonitized miaskites to sandyites and monzonitic rocks reflect their mobility and significant role of assimilation of the continental crust. The mobility of these elements and their redistribution in the rocks increase during active influence of fluid and growth in it the contents of alkalis and fluorine. Thus, sandyites of the Ilmenogorsky miaskite block are metasomatic rocks which produced after mylonitized miaskites in the linear tectonic zones during late postcollisional shear stage. The monzonitic rocks are ortho-rocks and were probably formed after country diorites. They kept relics of primary structures, but were transformed simultaneously with sandyites under influence of multistage tectonic-metamorphic processes.

Mineral deposits in the Neoarchean greenstone belts in the Fennoscandian Shield, especially in its eastern (Russian) part, are not as numerous as in Archean belts of Canada, Australia, or Southern Africa. The goal of the present paper is to show with an example of Tiksheozersky belt, that Neoarchean greenstone belts in Northern Karelia and Kola Peninsula do contain ore occurrences, typical to greenstone belts in the world, therefore prospects of these geological structures for mineral deposits are not uncovered fully. Ore occurrences of jaspilite, massive sulfide pirrhotite ore, molybdenite with uranium and graphite, arsenopyrite, and gold were found in the Kichany structure of the Tiksheozersky belt. Jaspilites and massive sulfide ores were considered as syngenetic to volcanic-sedimentary host rocks. Occurrences of molybdenite, arsenopyrite, and gold are epigenetic, controlled by zones of alteration. Zonality in ore-bearing altered rocks, peculiar properties of their chemical and mineral composition, as well as composition of rock-forming and ore minerals, were studied in detail. Age of processes of alteration was estimated with different geochronological methods. Dating of zircon grains from the molybdenite occurrence with LA-ICP-MS method showed two events 2600-2700 Ma (formation of host rocks) and 2100-1900 Ma (regional metamorphism) in their formation. Estimation of age of quartz-garnet-tourmaline metasomatite from arsenopyrite occurrence with composition of monazite gave 1789 ± 47 Ma, it corresponds to post-metamorphic event, probably connected with intrusions of tourmaline granites. Gold mineralization in quartz metasomatite and skarnoid has near the same age: titanite, which contains inclusions of gold, formed 1739 ± 15 Ma ago. Hence, occurrences of gold, arsenopyrite, and molybdenite formed in Neoarchean rocks during Palaeproterozoic (Svecofennian) metamorphic-metasomatic events. Gold mineralization is the most promising in the belt. Position of gold occurrences is controlled by thrust zones, gold concentrates in altered amphibolite with arsenopyrite-pirrhotite mineralization.

The subject of the study is gold-arsenic ores of the Vorontsovo gold deposit, belonging to the Carlin (Nevadian) type of mineralization. The deposit belongs to the large deposits class, it is localized near Auerbakh granitoid massif (diorites, quartz diorites, granodiorites, D₁), breaking through volcanic-sedimentary rocks (S₂-D₁). The mineralization is controlled by the gentle tectonic contact of the limestone and tuffaceous strata. The main gold reserves in the field are associated with gold-arsenic ores in sulfidized tuffo-aleurolites and horizons of brecciated limestones. Gold-arsenic mineralization is accompanied by near-ore changes quartz-sericite and argillizite types. Argillisite mineral parageneses are formed at the final stage of quartz-sericite metasomatism when the temperature is fallen below 220°C. The synchronization of gold-arsenic ores with the formation of Auerbakh’s intrusion rocks. Monofractions of K-hydromica of 2M₁ and 1M structural modifications from a sample of sulfidized tuff-aleurolite with a dense diffused dissemination of fine pyrite crystals and single particles of native gold was obtained. Hydromica is dispersed in the rock or occur to the secant carbonate veins with a thickness of up to 3-4 mm.⁴⁰Ar/³⁹Ar, age of the sample of K-hydromica was carried out by the method of stepwise heating in a quartz reactor. When a sample of K-hydromica is heated, a reliable plateau consisting of seven stages is established, which corresponds to more than 98% of the isolated³⁹Ar. Ar-Ar age of hydromica is 391.1 ± 4.9 Ma. This dating records the final stage of the formation of gold-arsenic ores. Analysis of the literature data on the age range of magmatic rocks formation in the Auerbakhovsky complex (390-410 Ma) showed that the time formation of gold-arsenic ores of Vorontsovskoe deposit corresponds to the time of introduction of granodiorites completing intrusive magmatism.

Characteristics and distinctive features of cupriferous basalts in the world are given. Deposits of the Superior Lake in the United States are considered as a reference. In the Northern Urals, drilling explored the Khultym’insk mineralized zone, associated with almond-stone olivine basalts and their tuffs of different granulometry. A detailed study of a new for the Urals type of copper mineralization into basalts for their conformity with known cupriferous volcanites. The main ore mineral is native copper, up to 10 mm size. Analysis of the distribution of native copper and sulphide mineralization in space according to drilling data made it possible to reveal mineral zonality in the area: the central part contains the releases of native copper, sulfide mineralization is developed on the periphery (both above and below in the section and in the flank parts), closer to the centre with a poor dissemination of chalcopyrite, and at a distance - pyrite. As a whole, the Khultym’inskaya mineralized zone has a gentle dip, thickness of up to 166-228 m and extent of up to 3500 m, including the intervals with the development of native copper, was discovered by drilling. This mineralized zone has been traced by inclination of more than 500 m. Despite its wide distribution, the mineralization is very dispersed and according to the results of testing the copper content is extremely low (less than 0.1%), and only a small number of samples contain more than 0.5% copper. Relatively elevated concentrations of copper (from 0.1 to >1%) are localized in spatially disconnected, small-sized bodies. The mineralized zone is controlled by thrust, it is probable that the ore-bearing fluids have been inflated over this structures. A copper ore manifestation of a new type, unconventional for the Urals with a stratified deposit of disseminated native copper in the basic section of the Upper Tournaisian age, has been revealed. The large areas occupied by rift basalts on the eastern slope of the Northern Urals make it possible to assume the prospect of this type mineralisation. Rift structures of Eastern Siberia are potential as well.

Age position and geodynamic conditions of molybdenum metallization and productive granitoids of the Urals formation are very little studied now. This publication contains the results of isotopic dating of granites from Talitsa Cu-Mo-porphyry deposit which should help solve this problem. The timing of formation of the molybdenum-bearing granitoids of Talitsa deposit was determined by applying the U-Pb SHRIMP-II method through zircons (the Center for Isotopic Research of All Russian Geological Research Institute, St.Petersburg). The U-Pb-age has been calculated on 7 (from a total of 11 conduc­ted) measurements with probability of concordanсе 0.996 and MSWD = 0.105 and it is 297.4 ± 2.3 Ma. The results of U-Pb dating are similar to before published Re-Os ages of Talitsa molybdenite deposit: 299.9 ± ± 2.9 Ma and 298.3 ± 1.3 Ma. These data establishes the new unknown before age level of molybdenum metallization. Until recently there has been only data on the Yuzhno-Shameiskoe molybdenum deposit connected with the subalkaline granites of Malyshevo massif which is younger: 277.1 ± 1.1 Ma. According to the received data, the intrusion of investigated granitoids happened practically at the same time as the formation of the wide-spread in the western slope of the Middle Urals intrusive bodies which are accompanied by gold metallization (Verkhisetsky, Shartashsky and others). With such close (practically the same) time of formation the rocks of molybdenum-bearing and gold-bearing massifs significantly differ in petrochemical peculiarities, which probably determines their metallogenetic specialization. Granitoids forming gold-bearing quartz veins on chemical composition are rocks of calc-alkaline series (typical exemple - Shartashskyi massif with Beriozovsk gold deposite). The granitoids productive on of Cu-Mo-porphyry type metallization together with large number of normal alkalinity rocks includes subalkaline rocks such as monzodiorites and quartz monzodiorites.