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GEOREF RECORD

Etude petrographique et structurale du complexe volcanique de Saint-Thibery (Herault)

Raymond Capdevila
Etude petrographique et structurale du complexe volcanique de Saint-Thibery (Herault)
Bulletin de la Societe Geologique de France (1962) 4 (1): 13-17

Abstract

The middle Pleistocene volcanic complex between Bessan and Saint Thibery (France) is composed of basanite volcanic material. Three main formations are recognized: tuffs, cones, and flows. Petrographic analysis of the material shows that the basanite is slightly deficient in silica as indicated by the presence of leucite. The basanite contains phenocrysts, microlites, and xenoliths. Scorias were the first products emitted, dikes the last. Structural analysis of the flows is based on their internal and external characteristics which were affected by the mode of diffusion of the lava, the behavior of the gas, and the cooling. The frontal and lateral borders of the flows are marked by coarse breccias which distinguish the original limit of the flow from the erosional limit. The upper borders of the flows are eroded, the lower borders are marked by scoriaceous breccias.


ISSN: 0037-9409
Coden: BSGFAE
Serial Title: Bulletin de la Societe Geologique de France
Serial Volume: 4
Serial Issue: 1
Title: Etude petrographique et structurale du complexe volcanique de Saint-Thibery (Herault)
Author(s): Capdevila, Raymond
Pages: 13-17
Published: 1962
Text Language: French
Publisher: Societe Geologique de France, Paris, France
Accession Number: 1967-001598
Categories: Igneous and metamorphic petrology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. geol. sketch map
N42°30'00" - N51°00'00", W05°00'00" - E08°30'00"
Source Note: Series 7
Country of Publication: France
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute. Reference includes data from Bibliography and Index of Geology Exclusive of North America, Geological Society of America, Boulder, CO, United States
Update Code: 1967
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