Skip to main content

Main menu

  • Home
    • Series home
    • Lyell Collection home
    • Geological Society home
  • Content
    • Online First
    • Current volume
    • All volumes
    • Collections
    • Supplementary publications
    • Open Access
  • Subscribe
    • GSL fellows
    • Institutions
    • Corporate
    • Other member types
  • Info
    • Authors
    • Librarians
    • Readers
    • Access for GSL Fellows
    • Access for other member types
    • Press office
    • Accessibility
    • Help
  • Alert sign up
    • eTOC alerts
    • RSS feeds
    • Newsletters
    • GSL blog
  • Propose
  • Geological Society of London Publications
    • Engineering Geology Special Publications
    • Geochemistry: Exploration, Environment, Analysis
    • Journal of Micropalaeontology
    • Journal of the Geological Society
    • Lyell Collection home
    • Memoirs
    • Petroleum Geology Conference Series
    • Petroleum Geoscience
    • Proceedings of the Yorkshire Geological Society
    • Quarterly Journal of Engineering Geology and Hydrogeology
    • Quarterly Journal of the Geological Society
    • Scottish Journal of Geology
    • Special Publications
    • Transactions of the Edinburgh Geological Society
    • Transactions of the Geological Society of Glasgow
    • Transactions of the Geological Society of London

User menu

  • My alerts
  • Log in
  • My Cart

Search

  • Advanced search
Geological Society, London, Memoirs
  • Geological Society of London Publications
    • Engineering Geology Special Publications
    • Geochemistry: Exploration, Environment, Analysis
    • Journal of Micropalaeontology
    • Journal of the Geological Society
    • Lyell Collection home
    • Memoirs
    • Petroleum Geology Conference Series
    • Petroleum Geoscience
    • Proceedings of the Yorkshire Geological Society
    • Quarterly Journal of Engineering Geology and Hydrogeology
    • Quarterly Journal of the Geological Society
    • Scottish Journal of Geology
    • Special Publications
    • Transactions of the Edinburgh Geological Society
    • Transactions of the Geological Society of Glasgow
    • Transactions of the Geological Society of London
  • My alerts
  • Log in
  • My Cart
  • Follow gsl on Twitter
  • Visit gsl on Facebook
  • Visit gsl on Youtube
  • Visit gsl on Linkedin
Geological Society, London, Memoirs

Advanced search

  • Home
    • Series home
    • Lyell Collection home
    • Geological Society home
  • Content
    • Online First
    • Current volume
    • All volumes
    • Collections
    • Supplementary publications
    • Open Access
  • Subscribe
    • GSL fellows
    • Institutions
    • Corporate
    • Other member types
  • Info
    • Authors
    • Librarians
    • Readers
    • Access for GSL Fellows
    • Access for other member types
    • Press office
    • Accessibility
    • Help
  • Alert sign up
    • eTOC alerts
    • RSS feeds
    • Newsletters
    • GSL blog
  • Propose

Cross-shelf trough and ice-stream lineations in the 440 Ma Late Ordovician rocks of northern Africa mapped from high-resolution satellite imagery

J. Moreau and J.-F. Ghienne
Geological Society, London, Memoirs, 46, 173-174, 30 November 2016, https://doi.org/10.1144/M46.98
J. Moreau
1Department of Geosciences and Natural Resource Management, University of Copenhagen, Øster Voldgade 10, DK-1350 Copenhagen K, Denmark
  • Find this author on Google Scholar
  • Search for this author on this site
  • For correspondence: moreau.juli1@gmail.com
J.-F. Ghienne
2Institut de Physique du Globe de Strasbourg, UMR 7516 CNRS-Université de Strasbourg, EOST, 1 rue Blessig 67084 Strasbourg, France
  • Find this author on Google Scholar
  • Search for this author on this site
PreviousNext
  • Article
  • Figures & Data
  • Info & Metrics
  • PDF
Loading

Attenuated and highly elongate glacial lineations, known as mega-scale glacial lineations (MSGLs), are produced on the deforming bed of fast-flowing modern and palaeo-ice streams (Canals et al. 2000; Stokes & Clark 2001; King et al. 2009). Large cross-shelf troughs, often containing glacial lineations, are also diagnostic of past glacial activity. MSGLs are widespread on the exposures of the western Murzuq Basin in Libya (Moreau et al. 2005); examples of these and other streamlined landforms, together with converging patterns of past ice flow and evidence of deformable-bed conditions, have been found in the 440 Ma old Late Ordovician rocks here and elsewhere in North Africa (Deynoux & Ghienne 2004; Moreau et al. 2005; Denis et al. 2009; Moreau 2011). This demonstrates the presence of an ancient ice sheet over North Africa when the region was in a polar position.

Description

The Hoggar Plateau and the western Murzuq Basin in southern Algeria and Libya have among the best continuous surface-exposures of Late Ordovician glacial rocks (Fig. 1). In particular, gently dipping monoclinal strata and soft glacimarine diamictites alternating with hard, ice-sculpted sandstones permitted the exceptional preservation of glacial landforms. These ancient …

View Full Text

Please note that if you are logged into the Lyell Collection and attempt to access content that is outside of your subscription entitlement you will be presented with a new login screen. You have the option to pay to view this content if you choose. Please see the relevant links below for further assistance.

INDIVIDUALS

Log in using your username and password

– GSL fellows: log in with your Lyell username and password. (Please check your access entitlements at https://www.geolsoc.org.uk/fellowsaccess)
– Other users: log in with the username and password you created when you registered. Help for other users is at https://www.geolsoc.org.uk/lyellcollection_faqs
Forgot your username or password?

Purchase access

You may purchase access to this article for 24 hours and download the PDF within the access period. This will require you to create an account if you don't already have one. To download the PDF, click the 'Purchased Content' link in the receipt email.

LIBRARY USERS

Log in through your institution

You may be able to gain access using your login credentials for your institution. Contact your library if you do not have a username and password.
If your organization uses OpenAthens, you can log in using your OpenAthens username and password. To check if your institution is supported, please see this list. Contact your library for more details.
If you think you should have access, please contact your librarian or email sales@geolsoc.org.uk

LIBRARIANS

Administer your subscription.

CONTACT US

If you have any questions about the Lyell Collection publications website, please see the access help page or contact sales@geolsoc.org.uk

PreviousNext
Back to top

In this volume

Geological Society, London, Memoirs: 46 (1)
Geological Society, London, Memoirs
Volume 46
2016
  • Table of Contents
  • Table of Contents (PDF)
  • About the Cover
  • Index by author
  • Back Matter (PDF)
  • Front Matter (PDF)
Alerts
Sign In to Email Alerts with your Email Address
Citation tools

Cross-shelf trough and ice-stream lineations in the 440 Ma Late Ordovician rocks of northern Africa mapped from high-resolution satellite imagery

J. Moreau and J.-F. Ghienne
Geological Society, London, Memoirs, 46, 173-174, 30 November 2016, https://doi.org/10.1144/M46.98
J. Moreau
1Department of Geosciences and Natural Resource Management, University of Copenhagen, Øster Voldgade 10, DK-1350 Copenhagen K, Denmark
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • For correspondence: moreau.juli1@gmail.com
J.-F. Ghienne
2Institut de Physique du Globe de Strasbourg, UMR 7516 CNRS-Université de Strasbourg, EOST, 1 rue Blessig 67084 Strasbourg, France
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site

Citation Manager Formats

  • BibTeX
  • Bookends
  • EasyBib
  • EndNote (tagged)
  • EndNote 8 (xml)
  • Medlars
  • Mendeley
  • Papers
  • RefWorks Tagged
  • Ref Manager
  • RIS
  • Zotero
Permissions
View PDF
Share

Cross-shelf trough and ice-stream lineations in the 440 Ma Late Ordovician rocks of northern Africa mapped from high-resolution satellite imagery

J. Moreau and J.-F. Ghienne
Geological Society, London, Memoirs, 46, 173-174, 30 November 2016, https://doi.org/10.1144/M46.98
del.icio.us logo Digg logo Reddit logo Twitter logo CiteULike logo Facebook logo Google logo Mendeley logo
Email to

Thank you for sharing this Geological Society, London, Memoirs article.

NOTE: We request your email address only to inform the recipient that it was you who recommended this article, and that it is not junk mail. We do not retain these email addresses.

Enter multiple addresses on separate lines or separate them with commas.
Cross-shelf trough and ice-stream lineations in the 440 Ma Late Ordovician rocks of northern Africa mapped from high-resolution satellite imagery
(Your Name) has forwarded a page to you from Geological Society, London, Memoirs
(Your Name) thought you would be interested in this article in Geological Society, London, Memoirs.
CAPTCHA
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.
Print
Download PPT
  • Tweet Widget
  • Facebook Like
  • Google Plus One
  • Article
    • Description
    • Interpretation
    • References
  • Figures & Data
  • Info & Metrics
  • PDF

Related Articles

Similar Articles

Cited By...

  • Most read
  • Most cited
Loading
  • Chapter 1 Introduction to the geology of Myanmar
  • Geological map of Myanmar
  • Chapter 2 Active tectonics of Myanmar and the Andaman Sea
  • UK oil and gas fields: an overview
  • Chapter 1 Introduction to the Jurassic Arabian Intrashelf Basin
More...

Memoirs

  • About the series
  • Books Editorial Committee
  • Submit a book proposal
  • Author information
  • Supplementary Publications
  • Subscribe
  • Pay per view
  • Alerts & RSS
  • Copyright & Permissions
  • Activate Online Subscription
  • Feedback
  • Help

Lyell Collection

  • About the Lyell Collection
  • Lyell Collection homepage
  • Collections
  • Open Access Collection
  • Open Access Policy
  • Lyell Collection access help
  • Recommend to your Library
  • Lyell Collection Sponsors
  • MARC records
  • Digital preservation
  • Developing countries
  • Geofacets
  • Manage your account
  • Cookies

The Geological Society

  • About the Society
  • Join the Society
  • Benefits for Members
  • Online Bookshop
  • Publishing policies
  • Awards, Grants & Bursaries
  • Education & Careers
  • Events
  • Geoscientist Online
  • Library & Information Services
  • Policy & Media
  • Society blog
  • Contact the Society

Published by The Geological Society of London, registered charity number 210161

Print ISSN 
0435-4052
Online ISSN 
2041-4722

Copyright © 2021 Geological Society of London