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Eclogite nodules associated with alkaline olivine basalts, Kenya

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Zusammenfassung

Alkalische Olivinbasalte und damit verbundene Smaragdfelsnieren vom südlichen Kenia sind beschrieben und es wird auf die chemischen und mineralogischen Ähnlichkeiten zwischen diesen Gesteinen und anderen kontinentalen nierentragenden Olivinbasalten hingewiesen. Die Möglichkeit, die Basalte unter der Einwirkung hoher Temperaturen und Druck aus Spinnelpyroxen und Smaragdfels abzuleiten, wird besprochen.

Abstract

Alkaline olivine basalts and associated eclogite nodules from southern Kenya are described and attention drawn to the chemical and mineralogical similarities between these rocks and other continental, inclusion-bearing olivine basalts. The possibility of deriving the basalts from spinel pyroxenite and eclogite at high temperatures and pressures is discussed.

Résumé

Les basaltes alcalins oléiques, et les nodules associés d'éclogite provenant du Kénya méridional font l'objet d'une description, et l'attention est appelée sur les analogies chimiques et minéralogiques existant entre ces roches et d'autres basaltes continentaux partiellement oléiques. La possibilité de dériver les basaltes du pyroxène de spinelle et de l'eclogite à hautes températures et pressions, donne lieu à une discussion.

Краткое содержание

Описаны линзевидные тела эклогитов в оливино-базальтовых породах Южной Кении. Автор ука зывает на то, что по хим ическому и минералогическому составу они подобны к онтинентальным олив иновым базальтам. Дискутируется возмо жность образования б азальта ив шпинелевого пироксена и эклогита при воздействии на ни х высокой температуры и высокого давления.

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Author notes

  1. E. P. Saggerson D. Sc., Ph. D., F. G. S.

    Present address: Department of Geology and Mineralogy, University of Natal, Durban, Republic of South Africa

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    1. E. P. Saggerson D. Sc., Ph. D., F. G. S.
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    Dedicated to Professor Dr. A.Rittmann on the occasion of his 75th birthday

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    Saggerson, E.P. Eclogite nodules associated with alkaline olivine basalts, Kenya. Geol Rundsch 57, 890–903 (1968). https://doi.org/10.1007/BF01845371

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