Scotchman, JI;
Bown, P;
Pickering, KT;
BouDagher-Fadel, M;
Bayliss, NJ;
Robinson, SA;
(2015)
A new age model for the middle Eocene deep-marine Ainsa Basin, Spanish Pyrenees.
Earth-Science Reviews
, 144
pp. 10-22.
10.1016/j.earscirev.2014.11.006.
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Abstract
The middle Eocene Ainsa Basin, Spanish Pyrenees, comprises ~. 4. km of deep-marine sedimentary rocks belonging to the Hecho Group. Despite extensive study of these exemplary deep-marine clastic successions, there has been no comprehensive chronostratigraphic framework that provides primary ages for the submarine fan and related deposits. Here, we present a new composite basin stratigraphy based upon biostratigraphic analyses of the Upper Hecho Group submarine-fan and interfan deposits. Calcareous nannofossil data suggest that deposition of the Gerbe through to Guaso systems occurred during biozones NP14-16 (42.6 and 48.9. Ma based on our age model). Additional biostratigraphic ages from the Lower Hecho Group suggest that the entire Hecho Group no older than biozone NP13 (~. 51. Ma). The improved chronostratigraphic control enables correlations between submarine canyons and submarine-fans of the Ainsa and Jaca basins to be assessed. Our new age model provides a means of comparison of stratigraphic events with regional sections allowing a better understanding of the lateral and temporal evolution of these depositional systems from source-to-sink.
| Type: | Article |
|---|---|
| Title: | A new age model for the middle Eocene deep-marine Ainsa Basin, Spanish Pyrenees |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.earscirev.2014.11.006 |
| Publisher version: | http://dx.doi.org/10.1016/j.earscirev.2014.11.006 |
| Language: | English |
| Additional information: | Copyright © 2015. This manuscript version is published under a Creative Commons Attribution Non-commercial Non-derivative 4.0 International licence (CC BY-NC-ND 4.0). This licence allows you to share, copy, distribute and transmit the work for personal and non-commercial use providing author and publisher attribution is clearly stated. Further details about CC BY licences are available at http://creativecommons.org/licenses/by/4.0. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Earth Sciences |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1459744 |
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