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GEOREF RECORD

Crustal structure beneath southern England from deep seismic reflection profiles

R. Andrew Chadwick, Nicholas Kenolty and Alfred Whittaker
Crustal structure beneath southern England from deep seismic reflection profiles
Journal of the Geological Society of London (November 1983) 140 (6): 893-911

Abstract

Seismic reflection events from recently acquired profiles in southern England are interpreted in terms of stratigraphic and structural interfaces between rock units. In particular, evidence is brought forward that a series of reflection events, dipping between 22 and 27, with azimuth averaging 160, represents 2 major thrust zones occurring in the Variscan floor beneath Mesozoic cover. A geological model based upon borehole information and regional geological considerations is presented. The tentative recognition of crystalline basement overlain and overstepped by late Proterozoic rocks of variable thickness suggests that basement in this area was unstable from late Precambrian times. The Mesozoic structural evolution can be related to tectonic re-activation of major concealed thrust zones in the Palaeozoic 'basement'.


ISSN: 0016-7649
EISSN: 2041-479X
Coden: JGSLAS
Serial Title: Journal of the Geological Society of London
Serial Volume: 140
Serial Issue: 6
Title: Crustal structure beneath southern England from deep seismic reflection profiles
Affiliation: Inst. Geol. Sci., Nottingham NG12 5GG, United Kingdom
Pages: 893-911
Published: 198311
Text Language: English
Publisher: Geological Society of London, London, United Kingdom
References: 18
Accession Number: 1986-007758
Categories: Solid-earth geophysics
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
N50°00'00" - N55°45'00", W06°30'00" - E01°30'00"
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2020, American Geosciences Institute. Reference includes data from PASCAL, Institute de l'Information Scientifique et Technique, Vandoeuvre-les-Nancy, France
Update Code: 1986
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