The University of Southampton
University of Southampton Institutional Repository

Geochemistry of the Davis and Aurora Banks: Possible implications on evolution of the North Scotia Ridge

Record type: Article

Geochemistry of volcanic rocks of the Davis and Aurora Banks, North Scotia Ridge, is presented with the aim to infer their petrogenesis and implications in regional tectonics. The analyses show consistent major and trace element patterns which are conformable with calc-alkaline series volcanics with typical signatures of subduction zone magma. The source melt of the studied volcanics is deciphered to be subduction zone mantle wedge metasomatised by sediments. Geochemical analyses of the volcanics from the Davis and Aurora Banks are compared with geochemical data of volcanics of the South Sandwich island arc and Jurassic, Cretaceous and Paleogene arc volcanics of Patagonia, South America. This comparative study shows that the Davis and Aurora Banks' volcanics are akin to Cretaceous arc volcanics of the Hardy Formation, South America. Rocks of Hardy Formation are also reported from South Georgia. Further, based on established trace element ratio diagrams, it is deciphered that source magma characteristics of arc volcanics from South Georgia, Hardy Formation and Davis and Aurora Banks are the same. Integration of our findings with previous studies, we propose a geodynamic model for the Davis and Aurora Banks in conformity with accepted model for the evolution of the West Scotia Sea.

Full text not available from this repository.

Citation

Pandey, Anju, Parson, Lindsay and Milton, Andy (2010) Geochemistry of the Davis and Aurora Banks: Possible implications on evolution of the North Scotia Ridge Marine Geology, 268, (1-4), pp. 106-114. (doi:10.1016/j.margeo.2009.10.025).

More information

Published date: 15 January 2010
Keywords: geochemistry, Davis Bank, Aurora Bank, North Scotia Ridge
Organisations: Marine Geoscience

Identifiers

Local EPrints ID: 72087
URI: http://eprints.soton.ac.uk/id/eprint/72087
ISBN: 9781402065118
ISSN: 0025-3227
PURE UUID: 9e5a11c6-faa9-4179-b199-81ea1470fea6

Catalogue record

Date deposited: 19 Jan 2010
Last modified: 18 Jul 2017 23:56

Export record

Altmetrics


Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×