Low-Titanium Lamproites of the Ryabinoviy Massif (Aldan Shield): Crystallization Conditions and Lithospheric Source

I. F. Chayka; A. E. Izokh; A. V. Sobolev; V. G. Batanova

doi:10.1134/S1028334X18080020

Low-Titanium Lamproites of the Ryabinoviy Massif (Aldan Shield): Crystallization Conditions and Lithospheric Source

I. F. Chayka, A. E. Izokh, A. V. Sobolev, V. G. Batanova

Результат исследования: Научные публикации в периодических изданиях › статья › рецензирование

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Аннотация

Obtained data shows that high-potassic dyke rocks of the Ryabinoviy massif (Central Aldan) belong to low-titanium lamproite series (Mediterranean type) and are distinct with “classic” high-titanium lamproites. Based on Al-in-olivine thermometer, temperature of olivine–chrome-spinel pair crystallization varies in range between 1100 and 1250°C. This suggests lithospheric mantle source for the parental melt and makes role of mantle plume insignificant. High-precision data on olivine composition and bulk rock traceelement composition imply mixed source for the parental melt, consisted of depleted peridotite and enriched domains, originated during ancient subduction.

Язык оригинала	английский
Страницы (с-по)	1008-1012
Число страниц	5
Журнал	Doklady Earth Sciences
Том	481
Номер выпуска	2
DOI	https://doi.org/10.1134/S1028334X18080020
Состояние	Опубликовано - 1 авг 2018

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10.1134/S1028334X18080020

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title = "Low-Titanium Lamproites of the Ryabinoviy Massif (Aldan Shield): Crystallization Conditions and Lithospheric Source",

abstract = "Obtained data shows that high-potassic dyke rocks of the Ryabinoviy massif (Central Aldan) belong to low-titanium lamproite series (Mediterranean type) and are distinct with “classic” high-titanium lamproites. Based on Al-in-olivine thermometer, temperature of olivine–chrome-spinel pair crystallization varies in range between 1100 and 1250°C. This suggests lithospheric mantle source for the parental melt and makes role of mantle plume insignificant. High-precision data on olivine composition and bulk rock traceelement composition imply mixed source for the parental melt, consisted of depleted peridotite and enriched domains, originated during ancient subduction.",

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year = "2018",

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Low-Titanium Lamproites of the Ryabinoviy Massif (Aldan Shield) : Crystallization Conditions and Lithospheric Source. / Chayka, I. F.; Izokh, A. E.; Sobolev, A. V.; Batanova, V. G.

В: Doklady Earth Sciences, Том 481, № 2, 01.08.2018, стр. 1008-1012.

Результат исследования: Научные публикации в периодических изданиях › статья › рецензирование

TY - JOUR

T1 - Low-Titanium Lamproites of the Ryabinoviy Massif (Aldan Shield)

T2 - Crystallization Conditions and Lithospheric Source

AU - Chayka, I. F.

AU - Izokh, A. E.

AU - Sobolev, A. V.

AU - Batanova, V. G.

PY - 2018/8/1

Y1 - 2018/8/1

N2 - Obtained data shows that high-potassic dyke rocks of the Ryabinoviy massif (Central Aldan) belong to low-titanium lamproite series (Mediterranean type) and are distinct with “classic” high-titanium lamproites. Based on Al-in-olivine thermometer, temperature of olivine–chrome-spinel pair crystallization varies in range between 1100 and 1250°C. This suggests lithospheric mantle source for the parental melt and makes role of mantle plume insignificant. High-precision data on olivine composition and bulk rock traceelement composition imply mixed source for the parental melt, consisted of depleted peridotite and enriched domains, originated during ancient subduction.

AB - Obtained data shows that high-potassic dyke rocks of the Ryabinoviy massif (Central Aldan) belong to low-titanium lamproite series (Mediterranean type) and are distinct with “classic” high-titanium lamproites. Based on Al-in-olivine thermometer, temperature of olivine–chrome-spinel pair crystallization varies in range between 1100 and 1250°C. This suggests lithospheric mantle source for the parental melt and makes role of mantle plume insignificant. High-precision data on olivine composition and bulk rock traceelement composition imply mixed source for the parental melt, consisted of depleted peridotite and enriched domains, originated during ancient subduction.

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KW - CONSTRAINTS

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DO - 10.1134/S1028334X18080020

M3 - Article

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SP - 1008

EP - 1012

JO - Doklady Earth Sciences

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