Palaeogene dyke
Introduction
The photograph on this page of Palaeogene dyke by Jonathan Wilkins as part of the Geograph project.
The Geograph project started in 2005 with the aim of publishing, organising and preserving representative images for every square kilometre of Great Britain, Ireland and the Isle of Man.
There are currently over 7.5m images from over 14,400 individuals and you can help contribute to the project by visiting https://www.geograph.org.uk
Palaeogene dyke
Image: © Jonathan Wilkins Taken: 9 Aug 2012
Cutting straight across the bedded and deformed strata of Silurian (Gala Group) age, this basalt dyke is a much younger feature and relates to the extrusion of lavas in Antrim some 60 million years ago. The central core of the dyke has been preserved, while the margins in contact with the greywackes have eroded away to leave a tongue-like structure facing to the north-west.
Images are licensed for reuse under creativecommons.org/licenses/by-sa/2.0
Image Location
Latitude
54.721869
Longitude
-4.963202