In Central and Northeast Eurasia, we describe the sedimentation and tectonic regime of a subglobal epoch of land peneplanation, which at the latest Cretaceous and at the earliest Paleogene covered all continents. It is usually associated with the regime of tectonic quiescence. However our researches determined that the time of vertical tectonic movement stabilization was accompanied by a sharp strengthening of crustal extension processes. In Central Eurasia, on the land platform (partly covered by sea), these processes led to relief planation, formation of weathering crust and products of its rewashing, activation of hydrothermal process, and in some cases (rather not often and locally) - to the appearance of predominantly basaltic volcanism spots. Synchronously mountainous landscape with areas of plain relief developed on the eastern mobile Pacific and Arctic margins of Eurasia, which are covered by Laramide tectogenesis. However, this areas are characterized by widespread crustal extension, whose intensity sharply increased (as compared with platform regions). This led to the formation of grabens and their extended belts, to mass inception of rifts, activation of basaltic volcanism. Sediments contain abundant clastic deposits, which make up intermountain molasses and fan formations which fill up the grabens among plain relief. It is shown that the mobile margin of the continent is characterized by processes of crustal compression, accompanied by orogenesis and folded deformations. However, compared with extension processes they played a minor role.

Metallogenic model of the margin sea lithosphere is a complex combination of rejuvenated mineralization of the Precambrian basement terrains, of different types of sulfidized zones Verkhoyansk (Pz-J) sedimentary formations and the post-magmatic generations in accretion (J-K₁) and post-accretion (K₁-Cz) structures. The intensity of mineralization and unique ore regions are closely related to the features of these combinations. Favorable combinations may be identified as a result of geochemical isotopic ore elements. The influence (heredity) of Precambrian mineralogical and geochemical lines is evident in pre- and sin-accretion (collision) structures; in post-accretion (covered) structures this effect is markedly reduced.

The section Usolka and duplicating its section Dal’ny Tulkas (Bashkortostan) are proposed as the stratotypes of the Lower Sakmarian stage boundary and Lower Artinskian stage boundary of the International Stratigraphic scale. We give the description of sections with the indication of conodont, fusulinid and ammonoid level findings and the results of studying U-Pb geochronology as well as Sr, C, O isotopes.

The article describes the results of studies of crude oils microelements composition in Chekan, Tumutuk and Tumutuk-Chekan satellite deposits of Romashkinskoye oil field. It was found that mentioned deposits belong to the group enriched in microelements. Median content of trace element in different producing horizons differ markedly. Investigated crude oils are characterized by very high V/Cu and V/Pb, which may indicate a slight manifestation of catagenetic changes. However such conclusion contraries to the rather low values of V/Fe which imply a significant elaborateness of naphthides. Median values of Ni/Cu (from 146 to ~330) suggest the absence of significant migration of naphthides as well as a sufficiently low level of their catagenetic transformations. It was established that on the diagram Gd_N/Yb_N-Eu/Eu* majority of data points of crude oil are localized in the field typical of fine-grained clastic formations, in which a significant or dominant role belongs to the products of erosion of primitive Archean substrates. The median value of Pt/Pd in the whole oils of Romashkinskoye field is ~60. Crude oils of Chekan, Tumutuk and Tumutuk-Chekan deposits according to the ratio of platinum group elements belong to the ruthenium-rhodium type.

The ores of Amur (Zn) and Verkhnyaya Arsha (Pb-Zn) stratiform sulfide deposits are replaced by brown ores in a supergene conditions. The main types of brown ores are massive aggregates of iron hydroxides, quartz breccias cemented by iron hydroxides and goethite pseudomorphoses after sulfide minerals. The supergene minerals include native metals (gold, zincian cooper, zinc), selenides (clausthalite, tiemannite), sulfides (acantite, galena), zincite, salts of oxyacids (minerals of jarosite, alunites and crandallite groups), phosphates (pyromorphite), sulfates (barite, anglesite), carbonates (cerussite), halogenides (iodargyrite, I-Br-chlorargyrite). Selenides in brown ores are found for the first time.

The results of study sulfide and noble metal mineralization in chrome ores of Lagortia-Kershor area, Voikar-Synya ultrabasic massif are given. Millerite, pentlandite, heazlewoodite, galena, arsenopyrite, cooper sulfides, mineral phases of osmium, ruthenium, iridium and palladium, native metals: gold, silver, zinc, copper, iron, nickel are identified and characterized. Formation of sulphide and noble metal mineralization (Au-Pd) occurred mainly in the Late Paleozoic time in connection with hydrothermal-metasomatic (metamorphic) processes. Gold-palladium mineralization superimposed not only on chrome ore, but also on host rocks in faults zones. Voikar-Synya and other ultrabasic massifs of Polar Urals deserve attention and further study of PGE and gold-PGE mineralization.

In Eastern Transbaikalia, as a result of collision processes during Middle-Late Jurassic, formations of amudzhikano-shakhtaminsky complex (J_2-3) has been acquired wide development. The origin of gold mineralization and explosive breccias associated with the final stages of their forming. As a rule, a few stages of the formation of explosive breccias are separated. Marked pre-ore, sin-ore and post-ore breccias differ by the composition of cement and concentrations of ore, rare and rare-earth elements. Magma chambers of early explosive breccias characterized by greater depth and smaller values of their differentiation degree.

We studied the contents of trace elements in troilite, iron and in iron-nickel metal from meteorite Chelyabinsk by means of LA-ICP-MS. The features of the distribution of siderophile and chalcophile elements in sulfide and metallic phase in gray and black (impact modified) meteorite fragments were identified and the correlations in the content of these elements was analyzed. The correlation of PGE and Au versus Ni was determined, which is probably related to their joint fractionation between sulfide and metallic phase during high-temperature recrystallization in gray meteorite fragments. In contrast, in black meteorite fragments the contents of these elements are flattened in metal and troilite. Distribution of siderophile elements in metal of meteorite Chelyabinsk black fragments essentially differs from the same in chondrites ALHA78109 (LL5) and Soko-Banja (LL4). For the gray fragments there are no such differences, this apparently indicates to the redistribution of some siderophile elements between metal and sulfide phase of meteorite as a result of melting under impact events.

In this paper we propose a concept that is based on the idea of a two-stage mechanism for the formation of planets. In the first stage it was formed the primary planetary embryos the central part of which is composed of material similar in composition to the Allende meteorite inclusions SAI. The middle part is composed of iron and external part - of material close to the enstatite chondrites. Under the proposed model, the substance formed the central part of the Moon, separated from the material of the Earth in the first stage of its formation during the collision and destruction of its primary embryos. In this case, the bulk of iron moved into new nuclei of the early Earth, and a significant proportion of refractory elements have been thrown into orbit, where the Moon was formed.