Отправить статью по E-mail Geochemical Characteristics of Jurassic Plume Magmatism in Ahlmannryggen Massif (Queen Maud Land, East Antarctica)
- Авторы: Sushchevskaya N.M.1, Belyatsky B.V.2, Leitchenkov G.L.3, Batanova V.G.1,4, Sobolev A.V.1,4
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Учреждения:
- Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Science
- Karpinsky Russian Geological Research Institute, Center for Isotopic Research
- Gramberg All-Russia Research Institute of Geology and Mineral Resources of the World Ocean
- Université Grenoble Alpes, Institute Science de la Terre (ISTerre)
- Выпуск: Том 486, № 1 (2019)
- Страницы: 529-532
- Раздел: Geochemistry
- URL: https://ogarev-online.ru/1028-334X/article/view/194958
- DOI: https://doi.org/10.1134/S1028334X19050076
- ID: 194958
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Аннотация
The Mesozoic dykes related to the distribution of Karoo plume on the territory of East Antarctica are studied. It is shown that magnesian high-Ti ferrobasalts are found in the area of Ahlmannryggen massif. Their formation is determined by melting of the mantle that contains pyroxenite. The isotope characteristics of the studied dolerites reflect the composition of a pyroxenite source, i.e., the ancient oceanic lithosphere (EMI) that subsided to the mantle depths of 150–170 km in the paleosubduction zone of the continent of Gondwana and was transformed to the pyroxenite melt 180 Ma ago during the interaction with mantle peridotite of the plume.
Об авторах
N. Sushchevskaya
Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Science
Автор, ответственный за переписку.
Email: nadyas@geokhi.ru
Россия, Moscow, 119991
B. Belyatsky
Karpinsky Russian Geological Research Institute,Center for Isotopic Research
Автор, ответственный за переписку.
Email: bbelyatsky@mail.ru
Россия, St. Petersburg, 199106
G. Leitchenkov
Gramberg All-Russia Research Institute of Geologyand Mineral Resources of the World Ocean
Email: bbelyatsky@mail.ru
Россия,
St. Petersburg, 190121
V. Batanova
Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Science; Université Grenoble Alpes, Institute Science de la Terre (ISTerre)
Email: bbelyatsky@mail.ru
Россия, Moscow, 119991; Grenoble
A. Sobolev
Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Science; Université Grenoble Alpes, Institute Science de la Terre (ISTerre)
Email: bbelyatsky@mail.ru
Россия, Moscow, 119991; Grenoble
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