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Open Access research with a European policy impact...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by Strathclyde researchers, including by researchers from the European Policies Research Centre (EPRC).

EPRC is a leading institute in Europe for comparative research on public policy, with a particular focus on regional development policies. Spanning 30 European countries, EPRC research programmes have a strong emphasis on applied research and knowledge exchange, including the provision of policy advice to EU institutions and national and sub-national government authorities throughout Europe.

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Carbon isotope and magnetostratigraphy of the Cretaceous (Barremian-Aptian) Pabellon Formation, Chanarcillo Basin, Chile

Price, Gregory D. and Dashwood, Ben and Taylor, Graerne K. and Kalin, Robert M. and Ogle, Neil (2008) Carbon isotope and magnetostratigraphy of the Cretaceous (Barremian-Aptian) Pabellon Formation, Chanarcillo Basin, Chile. Cretaceous Research, 29 (2). pp. 183-191.

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Abstract

New oxygen and carbon isotopic analyses of fine–fraction samples from the Pabellón Formation (Chañarcillo Basin, Chile), together with magnetostratigraphic data, are presented. The carbon isotope curve shows a distinctive pattern including a negative isotope excursion preceding a positive event. Within the Lower Aptian this chemostratigraphic event is widely used for correlation of marine and continental stratigraphic sections and confirms the global nature of the episode. The carbon isotope profile improves the stratigraphic correlation of the formation and, together with published ammonite data, the lower part of the succession is interpreted as early Aptian in age, whilst the upper part of the succession is of late Aptian age. The oxygen isotope data are consistent with a diagenetic and metamorphic overprint of the sediments. The palaeomagnetic data are consistent with the rocks having suffered a substantial clockwise rotation during a younger tectonic event, consistent with other units in the wider area and these data do not therefore help further constrain the age of deposition.