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Calcareous inclusions in lavas and agglomerates of Santorini volcano by I. A. Nicholls is a Earth and Planetary Sciences article available to read on EtoBox.

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Thermally metamorphosed and metasomatised fragments of basement actinolitechlorite-calcite-quartz schists and quartz-bearing marbles are found as inclusions in Quaternary agglomerates and historic (197 B.C. 1950) daeitie lavas of Santorini volcano, Greece. Inclusions in agglomerates preserve the structure of parent schists in the alternation of bands rich in diopside or smite with bands rich in plagioclase. By contrast, inclusions in historic dacites are not banded. Most develop a thin zone of hybrid material at the contact with enclosing lava. The assemblage calcie elinopyroxene-wollastonite-plagioelase is commonly developed. The clinopyroxene is a FeS+-rich smite or ferrosalite. Andradite-rich garnet and sphene are accessory minerals. Most examples carry interstitial siliceous glass of distinctive chemical composition, and several show minor olivine, augite, hypersthene and ealcic plagioclase of magmatie origin. Other inclusions exhibit the assemblage anhydrite-caleic clinopyroxene, the latter mineral ranging widely in A1 content. A single example has been observed to develop two distinct assemblages, the first coarsely crystalline melilite-wollastonite-magnetite, the second fine

Who reads Calcareous inclusions in lavas and agglomerates of Santorini volcano?

Author

I. A. Nicholls

Publisher

Springer; Springer-Verlag; Springer Verlag; Springer Science and Business Media LLC; Society for Mining, Metallurgy and Exploration Inc. (ISSN 0010-7999)

Published

1971

Language

EN

Field

Earth and Planetary Sciences (Physical Sciences)