A Viséan (Brigantian) conodont assemblage preserved in the dissolution residue component of a breccia matrix at Bullslaughter Bay, Pembrokeshire, South Wales

$39.00 plus tax (Refund Policy)

Buy Article:

Abstract:

This paper presents the results of a systematic investigation of breccia matrices from the so-called Gash Breccias of southern Pembrokeshire, South Wales. The investigation has revealed a Viséan (Brigantian) conodont assemblage preserved in the dissolution residue of a limestone breccia at Bullslaughter Bay East. The assemblage comprises eleven taxa including eight genera. Field evidence for its age suggests that the assemblage is derived from either the Asbian Oxwich Head Formation or the Brigantian Oystermouth Formation. The faunal assemblage, however, includes Vogelgnathus aff. postcampbelli, which is not known in the Asbian. It is, thus, certain that the source of the assemblage was Brigantian and the absence of Lochriea nodosa, L. mononodosa and L. ziegleri indicates that the source was probably from lower part of the Brigantian. The bearing of the assemblage on the age and origin of these controversial breccias is discussed. It is concluded that, at modern exposure levels, the Gash Breccias have always been devoid of microfossils indicative of the age of the brecciation.

Keywords: BIOSTRATIGRAPHY; CONODONTS; GASH BRECCIA; VISÉAN (BRIGANTIAN); WALES

Document Type: Research Article

DOI: http://dx.doi.org/10.1127/0077-7749/2013/0307

Publication date: March 1, 2013

More about this publication?
  • Neues Jahrbuch für Geologie und Paläontologie continuously publishes current original contributions from all fields of geology, ever since its foundation in 1807. All published contributions are in the English language.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • ingentaconnect is not responsible for the content or availability of external websites
Related content

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more