Geochemistry of eclogites Beloretsk complex (the Southern Urals) and genetic nature of their protoliths
The article gives a detailed mineralogical, petrographic and petrogeochemical characteristics of eclogites of the Beloretsk metamorphic complex (BMK). It was found that the most likely the eclogite protoliths were Early-Middle Riphean basites of the Bashkir meganticlinorium. The calculations show th...
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| Format: | Article |
| Language: | English |
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A.N. Zavaritsky Institute of Geology and Geochemistry
2017-01-01
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| Series: | Литосфера |
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| Online Access: | https://test.lithosphere.ru/jour/article/view/79 |
| _version_ | 1818068456945221632 |
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| author | S. G. Kovalev E. A. Timofeeva |
| author_facet | S. G. Kovalev E. A. Timofeeva |
| author_sort | S. G. Kovalev |
| collection | DOAJ |
| description | The article gives a detailed mineralogical, petrographic and petrogeochemical characteristics of eclogites of the Beloretsk metamorphic complex (BMK). It was found that the most likely the eclogite protoliths were Early-Middle Riphean basites of the Bashkir meganticlinorium. The calculations show that the maximum thermobaric parameters of eclogites formation in BMK reached: P - ≈13 kbar, T - ≈650°C. At the same time, widespread in rocks with symplectic structures who formed at P = 4.4-5.5 kbar, T = 480-500°C indicate a relatively rapid exhumation of the complex on the surface. It is concluded that the formation of para- and ortho- rocks of the Beloretsk metamorphic complex with a certain degree of conditionality can be divided into two main stages. The first stage is due to local(?) rifting, manifested at ≈730-710 million years ago. The second stage - the basic - happened during orogeny in fold area of Timanides under stress load (or stress + lithostatic pressure), which makes BMK as typical representative of metamorphic complexes collision type. |
| first_indexed | 2024-12-10T15:39:52Z |
| format | Article |
| id | doaj.art-65cb56758afa41f59d3eb8849ff2c350 |
| institution | Directory Open Access Journal |
| issn | 1681-9004 2500-302X |
| language | English |
| last_indexed | 2024-12-10T15:39:52Z |
| publishDate | 2017-01-01 |
| publisher | A.N. Zavaritsky Institute of Geology and Geochemistry |
| record_format | Article |
| series | Литосфера |
| spelling | doaj.art-65cb56758afa41f59d3eb8849ff2c3502022-12-22T01:43:08ZengA.N. Zavaritsky Institute of Geology and GeochemistryЛитосфера1681-90042500-302X2017-01-0102274879Geochemistry of eclogites Beloretsk complex (the Southern Urals) and genetic nature of their protolithsS. G. Kovalev0E. A. Timofeeva1Institute of Geology Ufa Science Centre of RASInstitute of Geology Ufa Science Centre of RASThe article gives a detailed mineralogical, petrographic and petrogeochemical characteristics of eclogites of the Beloretsk metamorphic complex (BMK). It was found that the most likely the eclogite protoliths were Early-Middle Riphean basites of the Bashkir meganticlinorium. The calculations show that the maximum thermobaric parameters of eclogites formation in BMK reached: P - ≈13 kbar, T - ≈650°C. At the same time, widespread in rocks with symplectic structures who formed at P = 4.4-5.5 kbar, T = 480-500°C indicate a relatively rapid exhumation of the complex on the surface. It is concluded that the formation of para- and ortho- rocks of the Beloretsk metamorphic complex with a certain degree of conditionality can be divided into two main stages. The first stage is due to local(?) rifting, manifested at ≈730-710 million years ago. The second stage - the basic - happened during orogeny in fold area of Timanides under stress load (or stress + lithostatic pressure), which makes BMK as typical representative of metamorphic complexes collision type.https://test.lithosphere.ru/jour/article/view/79эклогитамфиболитБелорецкий метаморфический комплексредкоземельные элементыпротолиттермодинамические параметрыeclogiteamphiboliteBeloretsk metamorphic complexrare earth elementsprotoliththermodynamic parameters |
| spellingShingle | S. G. Kovalev E. A. Timofeeva Geochemistry of eclogites Beloretsk complex (the Southern Urals) and genetic nature of their protoliths Литосфера эклогит амфиболит Белорецкий метаморфический комплекс редкоземельные элементы протолит термодинамические параметры eclogite amphibolite Beloretsk metamorphic complex rare earth elements protolith thermodynamic parameters |
| title | Geochemistry of eclogites Beloretsk complex (the Southern Urals) and genetic nature of their protoliths |
| title_full | Geochemistry of eclogites Beloretsk complex (the Southern Urals) and genetic nature of their protoliths |
| title_fullStr | Geochemistry of eclogites Beloretsk complex (the Southern Urals) and genetic nature of their protoliths |
| title_full_unstemmed | Geochemistry of eclogites Beloretsk complex (the Southern Urals) and genetic nature of their protoliths |
| title_short | Geochemistry of eclogites Beloretsk complex (the Southern Urals) and genetic nature of their protoliths |
| title_sort | geochemistry of eclogites beloretsk complex the southern urals and genetic nature of their protoliths |
| topic | эклогит амфиболит Белорецкий метаморфический комплекс редкоземельные элементы протолит термодинамические параметры eclogite amphibolite Beloretsk metamorphic complex rare earth elements protolith thermodynamic parameters |
| url | https://test.lithosphere.ru/jour/article/view/79 |
| work_keys_str_mv | AT sgkovalev geochemistryofeclogitesbeloretskcomplexthesouthernuralsandgeneticnatureoftheirprotoliths AT eatimofeeva geochemistryofeclogitesbeloretskcomplexthesouthernuralsandgeneticnatureoftheirprotoliths |