Skip to main content

Main menu

  • Home
    • Journal home
    • Lyell Collection home
    • Geological Society home
  • Content
    • Online First
    • Issue in progress
    • All issues
    • All collections
    • Thematic Collections
    • Supplementary publications
    • Open Access
  • Subscribe
    • GSL fellows
    • Institutions
    • Corporate
    • Other member types
  • Info
    • Authors
    • Librarians
    • Readers
    • GSL Fellows access
    • Other member type access
    • Press office
    • Accessibility
    • Help
    • Metrics
  • Alert sign up
    • RSS feeds
    • Newsletters
  • Submit
  • 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
Journal of the Geological Society
  • 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
Journal of the Geological Society

Advanced search

  • Home
    • Journal home
    • Lyell Collection home
    • Geological Society home
  • Content
    • Online First
    • Issue in progress
    • All issues
    • All collections
    • Thematic Collections
    • Supplementary publications
    • Open Access
  • Subscribe
    • GSL fellows
    • Institutions
    • Corporate
    • Other member types
  • Info
    • Authors
    • Librarians
    • Readers
    • GSL Fellows access
    • Other member type access
    • Press office
    • Accessibility
    • Help
    • Metrics
  • Alert sign up
    • RSS feeds
    • Newsletters
  • Submit

A hyperextension assemblage, imbricated in Archean–Paleoproterozoic crust, at the base of the Kalak Nappe Complex in the northern Scandinavian Caledonides

View ORCID ProfileFernando Corfu and Torgeir B. Andersen
Journal of the Geological Society, 179, jgs2021-140, 21 April 2022, https://doi.org/10.1144/jgs2021-140
Fernando Corfu
1Department of Geosciences and Centre for Earth Evolution and Dynamics, University of Oslo, PO Box 1047 Blindern, N-0316 Oslo, Norway
Roles: [Conceptualization (Lead)]
  • Find this author on Google Scholar
  • Search for this author on this site
  • ORCID record for Fernando Corfu
  • For correspondence: [email protected]
Torgeir B. Andersen
2Centre for Earth Evolution and Dynamics, University of Oslo, PO Box 1028 Blindern, N-0315 Oslo, Norway
Roles: [Conceptualization (Equal)], [Investigation (Supporting)], [Writing – review & editing (Supporting)]
  • Find this author on Google Scholar
  • Search for this author on this site
PreviousNext
  • Article
  • Figures & Data
  • Info & Metrics
  • PDF
Loading

Abstract

The break-up of continents generates dyke swarms, basins and hyperextension assemblages. Once incorporated into new orogens, the latter can provide crucial information about origins and tectonic processes. The Nålfjell Complex in the Caledonian Skillefjord Nappe of northern Norway has many of the characteristics of a hyperextension assemblage, notably the presence of solitary serpentinite bodies exposed by the exhumation of serpentinized mantle and now embedded in schists, amphibolites, mylonites, marbles and felsic gneisses. The Skillefjord Nappe is a lithologically diverse, imbricated and discontinuous allochthon. It consists of felsic gneisses and dykes dated by zircon U–Pb to c. 3100, 2940, 2830, 2510 and 1800–1750 Ma. These rocks yield titanite ages of 2810–2700, 1750, 1660–1590 and 430–420 Ma. Metagabbro intruded at 1995 Ma. The ages and evolution of the Skillefjord Nappe are distinct from those of the structurally higher Svaertholt Terrane (>1030 Ma sediments deformed and intruded by granite at 980–950 Ma) and the Sørøy Terrane (characterized by a multi-stage 900–500 Ma evolution). The assembly of these disparate elements was completed at 420 Ma. The timing of hyperextension is uncertain. The serpentinites have a primitive Pb isotopic composition indicating old depleted mantle lithosphere. Extensional processes from the Paleoproterozoic to Ediacaran are considered.

Thematic collection: This article is part of the Caledonian Wilson cycle collection available at: https://www.lyellcollection.org/cc/caledonian-wilson-cycle

  • © 2022 The Author(s). Published by The Geological Society of London. All rights reserved
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 [email protected]

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 [email protected]

PreviousNext
Back to top

In this issue

Journal of the Geological Society: 179 (4)
Journal of the Geological Society
Volume 179, Issue 4
July 2022
  • Table of Contents
  • About the Cover
  • Index by author
Alerts
Sign In to Email Alerts with your Email Address
Citation tools

A hyperextension assemblage, imbricated in Archean–Paleoproterozoic crust, at the base of the Kalak Nappe Complex in the northern Scandinavian Caledonides

Fernando Corfu and Torgeir B. Andersen
Journal of the Geological Society, 179, jgs2021-140, 21 April 2022, https://doi.org/10.1144/jgs2021-140
Fernando Corfu
1Department of Geosciences and Centre for Earth Evolution and Dynamics, University of Oslo, PO Box 1047 Blindern, N-0316 Oslo, Norway
Roles: [Conceptualization (Lead)]
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • ORCID record for Fernando Corfu
  • For correspondence: [email protected]
Torgeir B. Andersen
2Centre for Earth Evolution and Dynamics, University of Oslo, PO Box 1028 Blindern, N-0315 Oslo, Norway
Roles: [Conceptualization (Equal)], [Investigation (Supporting)], [Writing – review & editing (Supporting)]
  • 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

A hyperextension assemblage, imbricated in Archean–Paleoproterozoic crust, at the base of the Kalak Nappe Complex in the northern Scandinavian Caledonides

Fernando Corfu and Torgeir B. Andersen
Journal of the Geological Society, 179, jgs2021-140, 21 April 2022, https://doi.org/10.1144/jgs2021-140
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 Journal of the Geological Society 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.
A hyperextension assemblage, imbricated in Archean–Paleoproterozoic crust, at the base of the Kalak Nappe Complex in the northern Scandinavian Caledonides
(Your Name) has forwarded a page to you from Journal of the Geological Society
(Your Name) thought you would be interested in this article in Journal of the Geological Society.
CAPTCHA
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.
Print
Download PPT
Bookmark this article
  • Tweet Widget
  • Facebook Like
  • Google Plus One
  • Article
    • Abstract
    • Geological setting
    • Geochronology
    • Discussion
    • Conclusions
    • Acknowledgements
    • Author contributions
    • Funding
    • Competing interests
    • Data availability
    • References
  • Figures & Data
  • Info & Metrics
  • PDF

Related Articles

Similar Articles

Cited By...

More in this TOC Section

  • In situ laser ablation Lu–Hf geochronology of garnet across the Western Gneiss Region: campaign-style dating of metamorphism
  • The Revsegg and Kvitenut allochthons, Scandinavian Caledonides: origins and evolution in the Caledonian Wilson cycle
Show more: Thematic collection: Caledonian Wilson cycle
  • Most read
  • Most cited
Loading
  • Virtual outcrop-based analysis of channel and crevasse splay sandstone body architecture in the Middle Jurassic Ravenscar Group, Yorkshire, NE England
  • The naming of the Permian System
  • The Eocene−Oligocene transition in Nanggulan, Java: lithostratigraphy, biostratigraphy and foraminiferal stable isotopes
  • The Ediacaran origin of Ecdysozoa: integrating fossil and phylogenomic data
  • False biosignatures on Mars: anticipating ambiguity
More...

Journal of the Geological Society

  • About the journal
  • Editorial Board
  • Submit a manuscript
  • Author information
  • Supplementary Publications
  • Subscribe
  • Pay per view
  • 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
  • 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 
0016-7649
Online ISSN 
2041-479X

Copyright © 2022 Geological Society of London