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GEOREF RECORD

The geological history of Maio, Cape Verde Islands

C. J. Stillman, Harald Furnes, M. J. Le Bas, Alastair H. F. Robertson and J. Zielonka
The geological history of Maio, Cape Verde Islands
Journal of the Geological Society of London (May 1982) 139 (3): 347-361

Abstract

The oldest igneous rocks on Maio are pillow lavas of mid-ocean ridge pillow-basalt character which were tilted and uplifted to outcrop as a partial ring, dipping away steeply from a central plutonic complex of pyroxenites, essexites, syenites and carbonatites. The ocean-floor volcanic rocks are overlain conformably by a continuous pelagic carbonate succession indicating a shallowing depositional environment from Upper Jurassic to Upper Cretaceous times, when tuffaceous beds indicate renewed volcanism. Later deformation under compressive stress resulted in folding and thrusting and the intensive injections of major sills. After a hiatus in the Palaeogene, ankaramitic hyaloclastite and lava deltas occur, overlain by an extensive plateau of silica-undersaturated lavas, olivine melilitites and nephelinites, and thick ankaramitic lavas.


ISSN: 0016-7649
EISSN: 2041-479X
Coden: JGSLAS
Serial Title: Journal of the Geological Society of London
Serial Volume: 139
Serial Issue: 3
Title: The geological history of Maio, Cape Verde Islands
Affiliation: Trinity Coll., Dep.Geol., Dublin, Ireland
Pages: 347-361
Published: 198205
Text Language: English
Publisher: Geological Society of London, London, United Kingdom
References: 1 p.
Accession Number: 1984-029018
Categories: Areal geology
Document Type: Serial Map
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table, geol. sketch map
Map Scale: 1:50,000
Map Type: geologic map
N14°40'00" - N17°19'60", W25°30'00" - W22°30'00"
Secondary Affiliation: Geol. Inst. Bergen, NOR, NorwayUniv. Leicester, GBR, United KingdomGrant Inst.Geol., GBR, United Kingdom
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United KingdomTwickenhamUKUnited Kingdom. Reference includes data from PASCAL, Institute de l'Information Scientifique et Technique, Vandoeuvre-les-Nancy, France
Update Code: 1984
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