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GEOREF RECORD

A possible concealed granite beneath part of Anglesey, North Wales

J. D. Cornwell and I. F. Smith
A possible concealed granite beneath part of Anglesey, North Wales
Journal of the Geological Society of London (January 1993) 150, Part 1: 83-87

Abstract

A closed Bouguer gravity low is revealed by land and marine gravity survey data centred on Holyhead Bay, NW Anglesey. The anomaly extends across areas on land and offshore mainly occupied by Precambrian rocks. A concealed granite offers the best explanation for the anomaly and a late Caledonian age seems most probable for the intrusion, although Precambrian/early Cambrian ages are also possible. The existence of a granite in this area could have influenced the development of mineralization and, since the low density rock mass also formed a relatively buoyant core to the basement block, it could have been instrumental in the preservation of this Precambrian structural high.


ISSN: 0016-7649
EISSN: 2041-479X
Coden: JGSLAS
Serial Title: Journal of the Geological Society of London
Serial Volume: 150, Part 1
Title: A possible concealed granite beneath part of Anglesey, North Wales
Affiliation: British Geological Survey, Keyworth, United Kingdom
Pages: 83-87
Published: 199301
Text Language: English
Publisher: Geological Society of London, London, United Kingdom
References: 20
Accession Number: 1993-002896
Categories: Igneous and metamorphic petrologyApplied geophysics
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. geol. sketch map
N53°10'00" - N53°30'00", W04°45'00" - W04°00'00"
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
Update Code: 1993
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