MELANOCRATIC BASEMENT OF THE PEKUL'NEY RANGE, CHUKOTKA, AND TRENDS OF LITHOSPHERIC EVOLUTION IN PALEO-OCEANIC ZONES OF THE NORTHWEST PACIFIC FRINGE
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dc.contributor.author | Lyapunov S.M. | |
dc.contributor.author | Nekrasov G.Y. | |
dc.date.accessioned | 2020-04-15T06:25:19Z | |
dc.date.available | 2020-04-15T06:25:19Z | |
dc.date.issued | 1987 | |
dc.identifier | https://elibrary.ru/item.asp?id=30978563 | |
dc.identifier.citation | TRANSACTIONS (DOKLADY) OF THE USSR ACADEMY OF SCIENCES. EARTH SCIENCE SECTIONS, 1987, 297, 6, 61-64 | |
dc.identifier.issn | 0891-5571 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/16756 | |
dc.description.abstract | The melanocratic rock association considered represents the basement of the outer part of the Northwest Pacific paleo-oceanic fringe. It is confined to the zone where oceanic crustal complexes taper among crystalline rock formations of the pre-Riphean continental crust. This rock association includes two complexes. The first complex, the metamaficgabbroic, is present in the imbricate-nappe structure of the Pekul'ney Range in the basement of the autochthon. The second complex, the eclogite-spjnel peridotite-metagabbro, is incorporated into nappes of the allochthon. The studied rock complexes together with ophiolite series of the Koryak Mountai that replace them laterally reflect the directional stage-by-stage process which converted the laterally inhomogeneous Early Precambrian crust of the lithosphere of mafic zones to an oceanic lithosphere. The first stage of that process, the pre-oceanic (> 2700 m. y.), is now represented by eclogites and amphibole-garnet-two pyroxene schists, incorporated into nappes of the Pekul'ney Range and forming inclusions in ultramafic rocks of the Koryak Mountains. | |
dc.subject | Precambrian | en |
dc.subject | Riphean | en |
dc.title | MELANOCRATIC BASEMENT OF THE PEKUL'NEY RANGE, CHUKOTKA, AND TRENDS OF LITHOSPHERIC EVOLUTION IN PALEO-OCEANIC ZONES OF THE NORTHWEST PACIFIC FRINGE | |
dc.type | Статья | |
dc.subject.age | Докембрий::Протерозой::Рифей | ru |
dc.subject.age | Precambrian | en |
dc.subject.age | Precambrian::Proterozoic::Riphean | en |
dc.subject.age | Докембрий | ru |
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