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GEOREF RECORD

Crystal tuff in the Stoer Group, Torridonian Supergroup, NW Scotland

Richard A. Batchelor and Anthony R. Prave
Crystal tuff in the Stoer Group, Torridonian Supergroup, NW Scotland
Scottish Journal of Geology (2010) 46, Part 1: 1-6

Abstract

One thin bed in sandstones belonging to the Stoer Group (Torridonian Supergroup) contains feldspar and quartz grains showing deep concave embayments which are interpreted as corrosion features, and are all embedded in a fine-grained illitic or sericitic matrix. Its bulk chemical composition is similar to that of Phanerozoic metabentonites but it differs from the overlying Stac Fada Member which is believed to represent either a volcanogenic deposit or an impact ejecta blanket. Field relationships, petrographic and chemical characteristics point to this bed having a volcanic origin. This thin bed represents a crystal tuff and is the earliest example of a volcanogenic deposit in the Torridonian Supergroup in Scotland.


ISSN: 0036-9276
EISSN: 2041-4951
Coden: SJGEAX
Serial Title: Scottish Journal of Geology
Serial Volume: 46, Part 1
Title: Crystal tuff in the Stoer Group, Torridonian Supergroup, NW Scotland
Affiliation: University of Saint Andrews, School of Geography and Geosciences, Saint Andrews, United Kingdom
Pages: 1-6
Published: 2010
Text Language: English
Publisher: Scottish Academic Press, Edinburgh, United Kingdom
References: 23
Accession Number: 2010-066059
Categories: Igneous and metamorphic petrology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table, strat. col., geol. sketch map
N58°12'00" - N58°12'00", W05°19'60" - W05°19'60"
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from The Geological Society, London, London, United Kingdom
Update Code: 201036
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