Skip to main content

Main menu

  • Home
    • Journal home
    • Lyell Collection home
    • Geological Society home
  • Content
    • Accepted manuscripts
    • 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 types access
    • Press office
    • Accessibility
    • Help
    • Metrics
  • Alert sign up
    • eTOC alerts
    • Online First alerts
    • RSS feeds
    • Newsletters
    • GSL blog
  • 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
Scottish Journal of Geology
  • 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
Scottish Journal of Geology

Advanced search

  • Home
    • Journal home
    • Lyell Collection home
    • Geological Society home
  • Content
    • Accepted manuscripts
    • 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 types access
    • Press office
    • Accessibility
    • Help
    • Metrics
  • Alert sign up
    • eTOC alerts
    • Online First alerts
    • RSS feeds
    • Newsletters
    • GSL blog
  • Submit

Melt segregation structures within the Inzie Head gneisses of the northeastern Dalradian

T. E. Johnson, N. F. C. Hudson and G. T. R. Droop
Scottish Journal of Geology, 37, 59-72, 1 November 2001, https://doi.org/10.1144/sjg37020059
T. E. Johnson
1Department of Geology, University of Derby, Kedleston Road, Derby DE22 1GB
  • Find this author on Google Scholar
  • Search for this author on this site
N. F. C. Hudson
1Department of Geology, University of Derby, Kedleston Road, Derby DE22 1GB
  • Find this author on Google Scholar
  • Search for this author on this site
G. T. R. Droop
2Department of Earth Sciences, University of Manchester, Oxford Road, Manchester M13 9PL
  • Find this author on Google Scholar
  • Search for this author on this site
PreviousNext
  • Article
  • Figures & Data
  • Info & Metrics
  • PDF
Loading

Synopsis

The Inzie Head gneisses of the NE Dalradian are syntectonic metapelitic schollen migmatites containing numerous sill-like bodies of granite and diorite. Leucosomes with clear evidence of melt-present crystallization exhibit a wide variety of segregation structures. Initial in situ melting occurred within, or at the margins of, fertile metasedimentary horizons and was strongly controlled by variations in bulk-composition. Intergranular melt-pockets coalesced into thin (<10 mm), discontinuous stromatic horizons which subsequently joined laterally and/or became interconnected in extensional shear-zones. A diktyonitic structure formed, enabling buoyancy aided upward migration of melt into low-strain sites such as boudin-necks and shear-zones. Metre-scale leucosome channels containing abundant schollen and having diffuse, unchilled contacts against the migmatites were supplied from this network and may represent the foci of H2O-rich fluid influx. Bodies of nebulitic granite contain abundant ‘ghost’ schollen in the final stages of assimilation. Diorite sills show extensive magma mingling and hybridization with granitic leucosome and were clearly contemporaneous with the crustal melting. A variably developed flattening fabric within the migmatites was in part due to inflation following intrusion of the diorites. Immediately beneath diorite intrusions, melt loss from the migmatites was pronounced indicating that pure-shear dominated deformation is a strong driving force for melt segregation. Garnetiferous aplites at higher crustal levels and contemporaneous with the peak of regional metamorphism represent melt frozen in channelways that potentially contributed to nearby, large-scale Grampian granitic bodies.

  • © 2001 Scottish Journal of Geology
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

Scottish Journal of Geology: 37 (2)
Scottish Journal of Geology
Volume 37, Issue 2
November 2001
  • Table of Contents
  • Table of Contents (PDF)
  • Index by author
  • Back Matter (PDF)
  • Front Matter (PDF)
Alerts
Sign In to Email Alerts with your Email Address
Citation tools

Melt segregation structures within the Inzie Head gneisses of the northeastern Dalradian

T. E. Johnson, N. F. C. Hudson and G. T. R. Droop
Scottish Journal of Geology, 37, 59-72, 1 November 2001, https://doi.org/10.1144/sjg37020059
T. E. Johnson
1Department of Geology, University of Derby, Kedleston Road, Derby DE22 1GB
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
N. F. C. Hudson
1Department of Geology, University of Derby, Kedleston Road, Derby DE22 1GB
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
G. T. R. Droop
2Department of Earth Sciences, University of Manchester, Oxford Road, Manchester M13 9PL
  • 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

Melt segregation structures within the Inzie Head gneisses of the northeastern Dalradian

T. E. Johnson, N. F. C. Hudson and G. T. R. Droop
Scottish Journal of Geology, 37, 59-72, 1 November 2001, https://doi.org/10.1144/sjg37020059
del.icio.us logo Digg logo Reddit logo Twitter logo Facebook logo Google logo Mendeley logo
Email to

Thank you for sharing this Scottish Journal of Geology 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.
Melt segregation structures within the Inzie Head gneisses of the northeastern Dalradian
(Your Name) has forwarded a page to you from Scottish Journal of Geology
(Your Name) thought you would be interested in this article in Scottish Journal of Geology.
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
    • Synopsis
    • Introduction
    • Geological context
    • Evidence for leucosomes as frozen in situ melts
    • Field relations and melt segregation structures
    • Discussion
    • Conclusions - the implications for granite genesis
    • Acknowledgements
    • Footnotes
    • References
  • Figures & Data
  • Info & Metrics
  • PDF

Related Articles

Similar Articles

Cited By...

More in this TOC Section

  • Charles Darwin and Andrew Smith – an overseas exchange
  • New discoveries of Isochirotherium herculis (Egerton 1838) and a reassessment of chirotheriid footprints from the Triassic of the Isle of Arran, Scotland
  • The Highland Border Ophiolite of Scotland: observations from the Highland Workshop field excursion of April 2008
Show more: Papers
  • Most read
  • Most cited
Loading
  • A new geological map and review of the Middle Devonian rocks of Westray and Papa Westray, Orkney, Scotland
  • Mush ado about the Ratagain Complex, NW Scotland: insights into Caledonian granitic magmatism and emplacement from magnetic fabric analyses
  • A regional explanation for Laxfordian tectonic evolution and its implications for the Lewisian terrane model
  • Discussion on ‘Deglaciation and neotectonics in SE Raasay, Scottish Inner Hebrides’ by Smith et al. 2021 (SJG, 57, 106–116)
  • Discussion on ‘The geological collection from the Scottish National Antarctic Expedition (1902–04) in the Museo de La Plata, Argentina’ by Carrasquero 2021 (SJG, 57, 60–66)
More...

Scottish Journal of Geology

  • About the journal
  • Editorial Board
  • Submit a manuscript
  • 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

 

Edinburgh Geological Society logo

 

Glasgow Geological Society logo

 

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

Print ISSN 
0036-9276
Online ISSN 
2041-4951

Copyright © 2022 Scottish Journal of Geology