Characteristic Textures of Recrystallized, Peritectic, and Primary Magmatic Olivine in Experimental Samples and Natural Volcanic Rocks
| Autor: | Anita Cadoux, Saskia Erdmann, Bruno Scaillet, Caroline Martel |
|---|---|
| Přispěvatelé: | Institut des Sciences de la Terre d'Orléans - UMR7327 (ISTO), Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers en région Centre (OSUC), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Bureau de Recherches Géologiques et Minières (BRGM) (BRGM) |
| Rok vydání: | 2014 |
| Předmět: |
Basalt
geography Recrystallization (geology) geography.geographical_feature_category Olivine 010504 meteorology & atmospheric sciences Geochemistry Mineralogy engineering.material 010502 geochemistry & geophysics 01 natural sciences law.invention Volcanic rock Geophysics Geochemistry and Petrology law Ultramafic rock [SDU.STU.VO]Sciences of the Universe [physics]/Earth Sciences/Volcanology engineering Phenocryst Grain boundary Crystallization Geology 0105 earth and related environmental sciences |
| Zdroj: | Journal of Petrology Journal of Petrology, Oxford University Press (OUP), 2014, 55 (12), pp.2377-2402. ⟨10.1093/petrology/egu060⟩ |
| ISSN: | 1460-2415 0022-3530 |
| Popis: | International audience; Olivine textures are potentially important recorders of olivine origin and crystallization conditions. Primary magmatic and xenocrystic origins are commonly considered for olivine from ultramafic to intermediate magmas, while secondary olivine origins (i.e. crystals formed by recrystallization or peritectic reaction) are rarely considered in the interpretation of magmatic phenocrysts. The main aim of our study was to determine textures that are characteristic for secondary magmatic olivine and non-characteristic, or at least rare, for primary magmatic olivine. To characterize the textures of the different olivine types, we review previous experimental work and present new textural data for olivine from four melanorite melting and eight basalt crystallization experiments. We (i) qualitatively characterize olivine textures using transmitted light and back-scattered electron microscopy; and (iii) semi-quantitatively characterize the 2D surface area of olivine branches and individual crystals, their 2D and calculated 3D shapes, and 2D grain boundary segment |
| Databáze: | OpenAIRE |
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