Evolution of the paleozoic nephelinite series of the kola province: evidence from p and sr distribution

L. V. Arzamastseva, A. A. Arzamastsev

Результат исследований: Научные публикации в периодических изданияхстатья

Выдержка

We studied the distribution of P and Sr in plutonic, dike, and extrusive rocks of the Paleozoic nephelinite series of the Kola alkaline province. For the plutonic series, the highest P abundances are observed in melanocratic lithologies with melteigite compositions, and for the dike nephelinite series, in nephelinites. Strontium shows two types of distribution depending on whether or not melilite lithologies form part of the rock series. Type 1, characterized by Sr accumulation in melilitolites, comprises rock sequences of the Kovdor, Cape Turii, and Salma massifs. Type 2 is represented by the Khibiny Massif rock sequence, which is virtually devoid of melilite rocks. In the latter case, a positive Sr anomaly is observed in the melteigites, which, by and large, coincides with the P distribution pattern for the rock series. The between-type differences in P and Sr distribution in the derivatives of the initial nephelinite melts are shown to result from physicochemical parameters of magma crystallization, primarily, the volatile regime.

Язык оригиналаанглийский
Страницы (с-по)405-414
Число страниц10
ЖурналGeokhimiya
Номер выпуска5
СостояниеОпубликовано - 1 дек 1996

Отпечаток

nephelinite
Paleozoic
Rocks
rocks
rock
melilite
Levees
Lithology
rock intrusions
lithology
dike
massifs
Strontium
distribution (property)
Crystallization
strontium
magma
distribution
province
crystallization

Предметные области Scopus

  • Геохимия и петрология
  • Геофизика

Цитировать

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abstract = "We studied the distribution of P and Sr in plutonic, dike, and extrusive rocks of the Paleozoic nephelinite series of the Kola alkaline province. For the plutonic series, the highest P abundances are observed in melanocratic lithologies with melteigite compositions, and for the dike nephelinite series, in nephelinites. Strontium shows two types of distribution depending on whether or not melilite lithologies form part of the rock series. Type 1, characterized by Sr accumulation in melilitolites, comprises rock sequences of the Kovdor, Cape Turii, and Salma massifs. Type 2 is represented by the Khibiny Massif rock sequence, which is virtually devoid of melilite rocks. In the latter case, a positive Sr anomaly is observed in the melteigites, which, by and large, coincides with the P distribution pattern for the rock series. The between-type differences in P and Sr distribution in the derivatives of the initial nephelinite melts are shown to result from physicochemical parameters of magma crystallization, primarily, the volatile regime.",
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Evolution of the paleozoic nephelinite series of the kola province : evidence from p and sr distribution. / Arzamastseva, L. V.; Arzamastsev, A. A.

В: Geokhimiya, № 5, 01.12.1996, стр. 405-414.

Результат исследований: Научные публикации в периодических изданияхстатья

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