The stratigraphy of a sedimentary melange and associated deposits in South Cornwall, England

Saved in:
Authors:Barnes, R. P.
Author Affiliations:Primary:
Inst. Geol. Sci., Edinburgh EH9 3LA, United Kingdom
Volume Title:Proceedings of the Geologists' Association
Source:Proceedings of the Geologists' Association, 94(3), p.217-229. Publisher: Geologists' Association, London, United Kingdom. ISSN: 0016-7878
Publication Date:1983
Note:In English. 2 p. refs.; illus.
Summary:'Crush breccias' exposed near the top of the Gramscatho flysch sequence are reinterpreted as a Givetian sedimentary melange and named the Meneage formation. The melange is >1 km thick and preserves a distinct stratigraphy with a large proportion of slumped greywacke phacoids and a mudstone matrix throughout. Ordovician quartzite and Devonian limestone phacoids (= or <200 m long) occur in distinct beds. In the centre of the sequence = or <200 m of rudites are interbedded with the melange and towards the top of the formation bimodal volcanic rocks form both interbedded units and large phacoids. The melange probably represents the early stages of deformation of a sedimentary basin generated intracratonically in a strike-slip zone. [P.Br.]
Subjects:Devonian; Displacements; Faults; Givetian; Lithofacies; Melange; Middle Devonian; Ordovician; Paleozoic; Stratigraphy; Strike-slip faults; Structural geology; Tectonics; Cornwall England; England; Europe; Great Britain; South-West England; United Kingdom; Western Europe; Gramscatho Formation; Lizard Complex; Meneage Formation; Roseland; Rudite; Structure phacoidale
Abstract Numbers:84M/0923
Record ID:1985076993
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom, Reference includes data from PASCAL, Institute de l'Information Scientifique et Technique
Tags: Add Tag
No Tags, Be the first to tag this record!
Be the first to leave a comment!
You must be logged in first