Skip to main content
×
Home
    • Aa
    • Aa
  • Get access
    Check if you have access via personal or institutional login
  • Cited by 9
  • Cited by
    This article has been cited by the following publications. This list is generated based on data provided by CrossRef.

    Romano, Mike and Webb, Joe 2000. A new record ofColpocoryphe (Trilobita) from the Skiddaw Group of the Cross Fell inlier, northern England. Geological Journal, Vol. 35, Issue. 2, p. 111.


    Cooper, A. H. Rushton, A. W. A. Molyneux, S. G. Hughes, R. A. Moore, R. M. and Webb, B. C. 1995. The stratigraphy, correlation, provenance and palaeogeography of the Skiddaw Group (Ordovician) in the English Lake District. Geological Magazine, Vol. 132, Issue. 02, p. 185.


    Kimbell, G. S. and Stone, P. 1995. Crustal magnetization variations across the Iapetus Suture Zone. Geological Magazine, Vol. 132, Issue. 05, p. 599.


    Pharaoh, Tim England, Richard and Lee, Mick 1995. The concealed Caledonide basement of Eastern England and the southern North Sea — A review. Studia Geophysica et Geodætica, Vol. 39, Issue. 3, p. 330.


    Rushton, A. W. A. Stone, P. and Hughes, R. A. 1995. Biostratigraphical control of thrust models for the Southern Uplands of Scotland. Transactions of the Royal Society of Edinburgh: Earth Sciences, Vol. 86, Issue. 03, p. 137.


    Stone, P. and Evans, J. A. 1995. Nd-isotope study of provenance patterns across the British sector of the Iapetus Suture. Geological Magazine, Vol. 132, Issue. 05, p. 571.


    Cooper, A. H. Millward, D. Johnson, E. W. and Soper, N. J. 1993. The early Palaeozoic evolution of northwest England. Geological Magazine, Vol. 130, Issue. 05, p. 711.


    Fortey, N. J. Roberts, B. and Hirons, S. R. 1993. Relationship between metamorphism and structure in the Skiddaw Group, English Lake District. Geological Magazine, Vol. 130, Issue. 05, p. 631.


    Kneller, B. C. King, L. M. and Bell, A. M. 1993. Foreland basin development and tectonics on the northwest margin of eastern Avalonia. Geological Magazine, Vol. 130, Issue. 05, p. 691.


    ×

Structural evolution of the Skiddaw Group (English Lake District) on the northern margin of eastern Avalonia

  • R. A. Hughes (a1), A. H. Cooper (a1) and P. Stone (a2)
  • DOI: http://dx.doi.org/10.1017/S0016756800020926
  • Published online: 01 May 2009
Abstract
Abstract

The Skiddaw Group comprises a marine sedimentary sequence deposited on the northern margin of eastern Avalonia in Tremadoc to Llanvirn times. It is unconformably overlain by subduction-related volcanic rocks (the Eycott and Borrowdale Volcanic groups) of mid-Ordovician age, and foreland basin marine strata of late Ordovician and Silurian age. The Skiddaw Group has a complex deformation history. Syn-depositional deformation produced soft sediment folds and an olistostrome. Volcanism was preceded (in late Llanvirn to Llandeilo times) by regional uplift and tilting of the Skiddaw Group, probably caused by the generation of melts through subduction-related processes. The Acadian (late Caledonian) deformation event produced a northeast- to east-trending regional cleavage, axial planar to large scale folds, and a later set of southward-directed thrusts with associated minor folds and crenulation cleavages. This event affected the northern Lake District probably in the late Silurian and early Devonian. The Skiddaw Group structures contrast strongly with those formed during the same event in the younger rocks of the Lake District inlier. The contrasts are attributed to differing rheological responses to varying and possibly diachronous stresses, and to possible impedence of thrusting by the combined mass of the Borrowdale Volcanic Group and the Lake District batholith.

Copyright
Linked references
Hide All

This list contains references from the content that can be linked to their source. For a full set of references and notes please see the PDF or HTML where available.

R. P. Barnes , B. C. Lintern & P. Stone 1989. Short paper: timing and regional implications of deformation in the Southern Uplands of Scotland. Journal of the Geological Society, London146, 905–8.

M. J. Branney & N. J. Soper 1988. Ordovician volcano-tectonics in the English Lake District. Journal of the Geological Society, London145, 367–76.

D. C. Cooper , M. K. Lee , N. J. Fortey , A. H. Cooper , C. C. Rundle , B. C. Webb & P. M. Allen 1988. The Crummock Water aureole: a zone of metasomatism and source of ore metals in the English Lake District. Journal of the Geological Society, London145, 523–40.

D. G. Helm 1970. Stratigraphy and structure in the Black Combe inlier, English Lake District. Proceedings of the Yorkshire Geological Society 38, 105–48.

B. C. Kneller 1991. A foreland basin on the southern margin of Iapetus. Journal of the Geological Society, London148, 207210.

M. D. Max , A. J. Barber & J. Martinez 1990. Terrane assemblage of the Leinster Massif, SE Ireland, during the Lower Palaeozoic. Journal of the Geological Society, London147, 1035–50.

B. Roberts , C. Morrison & S. Hirons 1990. Low grade metamorphism of the Manx Group, Isle of Man: a comparative study of white mica ‘crystallinity’ techniques. Journal of Geological Society, London147, 271–7.

D. E. Roberts 1971. Structures of the Skiddaw Slates in the Caldew Valley, Cumberland. Geological Journal 7, 225–38.

C. C. Rundle 1979. Ordovician intrusions in the English Lake District. Journal of the Geological Society, London136, 2938.

C. C. Rundle 1981. The significance of isotopic dates from the English Lake District for the Ordovician-Silurian time-scale. Journal of the Geological Society, London138, 569–72.

A. Simpson 1967. The stratigraphy and tectonics of the Skiddaw Slates and the relationship of the overlying Borrowdale Volcanic Series in part of the Lake District. Geological Journal 5, 391418.

N. J. Soper 1970. Three critical localities on the junction of the Borrowdale Volcanic rocks with the Skiddaw Slates in the Lake District. Proceedings of the Yorkshire Geological Society 37, 461–93.

N. J. Soper , R. A. Strachan , R. E. Holdsworth , R. A. Gayer & R. O. Greiling 1992. Sinistral transpression and the Silurian closure of Iapetus. Journal of the Geological Society, London149, 871–80.

P. Stone , J. D. Floyd , R. P. Barnes & B. C. Lintern 1987. A sequential back-arc and foreland basin thrust duplex model for the Southern Uplands of Scotland. Journal of the Geological Society, London144, 753–64.

B. C. Webb & A. H. Cooper 1988. Slump folds and gravity slide structures in a Lower Palaeozoic marginal basin sequence (the Skiddaw Group), NW England. Journal of Structural Geology 10, 463–72.

Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Geological Magazine
  • ISSN: 0016-7568
  • EISSN: 1469-5081
  • URL: /core/journals/geological-magazine
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×