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11.
Analysis of the spatial relations of gold ore occurrences and the enclosing geological environment in the Chukotka Autonomous Okrug (ChAO) has shown that Au–quartz ore occurrences in turbidites are located predominantly in areas of the Early Cretaceous granitoid magmatism with the thick collision-type continental crust. The Cu–Au porphyry deposits are located in areas with complete development of Early Cretaceous magmatism within the outer zone of the Okhotsk–Chukchi volcanoplutonic belt (OChVB). The Au–Ag epithermal deposits are located in the areas of the Late Cretaceous granitoid magmatism within the inner and outer zones of the OChVB. The prospects of island-arc complexes for searching for Kuroku-type Au-bearing ore objects are available. 相似文献
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Volkov A. V. Novikov I. A. Razumovskiy A. A. Murashov K. Yu. Sidorova N. V. Sidorov A. A. 《Doklady Earth Sciences》2018,479(1):393-396
The new geochemical data obtained of cupriferous sandstones of the Orenburg area of the Ural region show that the Permian host stratum could have served as the source of rare-earth elements and other microelements for the ore-forming fluids. They confirm the possibility of using a convection model to explain the genesis of the copper ores studied. This model indicates the likely multistage development of mineralization to significant depths, like in the Manto deposits in Chili. Consequently, the Permian cupriferous sandstones of the southwestern area of the Ural region can be considered a very promising source of raw material for the development of copper industry in the area.
相似文献13.
A Metamorphosed Au–Ag Deposit in the Precambrian of the Fennoscandian Shield: A New Conceptual Model
Doklady Earth Sciences - The Oleninskoe gold deposit is located in the northwestern part of the Kolmozero–Voron’ya greenstone belt (Kola Peninsula), in a sequence of amphibolite with... 相似文献
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Yu. G. Safonov G. I. Gorbunov A. A. Pek A. V. Volkov T. M. Zlobina G. G. Kravchenko E. P. Malinovsky 《Geology of Ore Deposits》2007,49(5):343-371
The current status of investigations of the structure of ore fields and deposits in Russia is considered. The importance of traditional lines of research in this field and the great body of information acquired is emphasized. The changes in ideas of geodynamic and tectonic crustal evolution have made it necessary to alter concepts of the geological and structural position of ore fields and deposits. New challenges are caused by these changes and progress in the knowledge of ore deposits and the depth of their formation, as well as geodynamic, tectonophysical, and hydrodynamic processes in ore-bearing crustal blocks. The results of hydrodynamic modeling of deposit formation controlled by deeply penetrating fault zones are discussed. Various relationships between hydrodynamic and structural factors in ore formation are considered. 相似文献
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The metallogenic efficiency of the marginal sea lithosphere of Northeastern Asia is associated mainly with the ore formation
variety of the remaining cratons and microcratons that defined the structural peculiarity of the region; these are setoffs
of the Precambrian basement, brachyform, anticline highs, and genesis of rifts within TMA periods. These formations allowed
us to explain the reasons for the unique metal-bearing feature of the marginal sea lithosphere of the Pacific Ocean ore belt
in addition to phenomena of an inherited nature of mineralization and conditions of formation of polychronous ore deposits. 相似文献
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