COMPOSITIONAL FEATURES AND AGE OF ALKALINE GRANITES OF THE INGUR MASSIF, WESTERN TRANS-BAIKAL AREA
The Ingur alkaline granite massif and the associated Zr-Nb occurrence make up part of the largest Mongolian-Trans-Baikal alkaline granitoid provinces. The massif is composed of arfvedsonite, biotite, and alaskite granites. High content of HREE determines the low La/Ybn (2–7) value and a negative eur...
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Russian Academy of Sciences, Siberian Branch, Institute of the Earth's crust
2022-10-01
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| Series: | Геодинамика и тектонофизика |
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| Online Access: | https://www.gt-crust.ru/jour/article/view/1542 |
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| author | M. V. Rampilova M. O. Rampilov I. A. Izbrodin |
| author_facet | M. V. Rampilova M. O. Rampilov I. A. Izbrodin |
| author_sort | M. V. Rampilova |
| collection | DOAJ |
| description | The Ingur alkaline granite massif and the associated Zr-Nb occurrence make up part of the largest Mongolian-Trans-Baikal alkaline granitoid provinces. The massif is composed of arfvedsonite, biotite, and alaskite granites. High content of HREE determines the low La/Ybn (2–7) value and a negative europium anomaly (Eu/Eu*≈0.17). They are depleted in Ba, Sr and enriched in Nb, Ta, Zr, Hf and Y. According to their geochemical properties the rocks of the massif belong to the A-type granites. The rare-metal mineralization of the Ingur granites mainly involves zircon, bastnäsite, monazite, and xenotime. The U-Pb age determined by SHRIMP II with zircon from arfvedsonite granites (272 Ma) indicates the Late Permian formation. |
| format | Article |
| id | doaj-art-7d84ab78c1b14d4e967e0905820ec8e5 |
| institution | Kabale University |
| issn | 2078-502X |
| language | English |
| publishDate | 2022-10-01 |
| publisher | Russian Academy of Sciences, Siberian Branch, Institute of the Earth's crust |
| record_format | Article |
| series | Геодинамика и тектонофизика |
| spelling | doaj-art-7d84ab78c1b14d4e967e0905820ec8e52025-08-20T03:59:45ZengRussian Academy of Sciences, Siberian Branch, Institute of the Earth's crustГеодинамика и тектонофизика2078-502X2022-10-0113410.5800/GT-2022-13-4-0647647COMPOSITIONAL FEATURES AND AGE OF ALKALINE GRANITES OF THE INGUR MASSIF, WESTERN TRANS-BAIKAL AREAM. V. Rampilova0M. O. Rampilov1I. A. Izbrodin2Dobretsov Geological Institute, Siberian Branch of the Russian Academy of SciencesDobretsov Geological Institute, Siberian Branch of the Russian Academy of SciencesSobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of SciencesThe Ingur alkaline granite massif and the associated Zr-Nb occurrence make up part of the largest Mongolian-Trans-Baikal alkaline granitoid provinces. The massif is composed of arfvedsonite, biotite, and alaskite granites. High content of HREE determines the low La/Ybn (2–7) value and a negative europium anomaly (Eu/Eu*≈0.17). They are depleted in Ba, Sr and enriched in Nb, Ta, Zr, Hf and Y. According to their geochemical properties the rocks of the massif belong to the A-type granites. The rare-metal mineralization of the Ingur granites mainly involves zircon, bastnäsite, monazite, and xenotime. The U-Pb age determined by SHRIMP II with zircon from arfvedsonite granites (272 Ma) indicates the Late Permian formation.https://www.gt-crust.ru/jour/article/view/1542alkaline graniteswestern trans-baikalrare metal granitesa-type granitesu-pb geochronology |
| spellingShingle | M. V. Rampilova M. O. Rampilov I. A. Izbrodin COMPOSITIONAL FEATURES AND AGE OF ALKALINE GRANITES OF THE INGUR MASSIF, WESTERN TRANS-BAIKAL AREA Геодинамика и тектонофизика alkaline granites western trans-baikal rare metal granites a-type granites u-pb geochronology |
| title | COMPOSITIONAL FEATURES AND AGE OF ALKALINE GRANITES OF THE INGUR MASSIF, WESTERN TRANS-BAIKAL AREA |
| title_full | COMPOSITIONAL FEATURES AND AGE OF ALKALINE GRANITES OF THE INGUR MASSIF, WESTERN TRANS-BAIKAL AREA |
| title_fullStr | COMPOSITIONAL FEATURES AND AGE OF ALKALINE GRANITES OF THE INGUR MASSIF, WESTERN TRANS-BAIKAL AREA |
| title_full_unstemmed | COMPOSITIONAL FEATURES AND AGE OF ALKALINE GRANITES OF THE INGUR MASSIF, WESTERN TRANS-BAIKAL AREA |
| title_short | COMPOSITIONAL FEATURES AND AGE OF ALKALINE GRANITES OF THE INGUR MASSIF, WESTERN TRANS-BAIKAL AREA |
| title_sort | compositional features and age of alkaline granites of the ingur massif western trans baikal area |
| topic | alkaline granites western trans-baikal rare metal granites a-type granites u-pb geochronology |
| url | https://www.gt-crust.ru/jour/article/view/1542 |
| work_keys_str_mv | AT mvrampilova compositionalfeaturesandageofalkalinegranitesoftheingurmassifwesterntransbaikalarea AT morampilov compositionalfeaturesandageofalkalinegranitesoftheingurmassifwesterntransbaikalarea AT iaizbrodin compositionalfeaturesandageofalkalinegranitesoftheingurmassifwesterntransbaikalarea |