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A revised and improved age model for the middle Miocene part of IODP Site U1318 (Porcupine Basin, offshore southwestern Ireland)

Published online by Cambridge University Press:  30 January 2017

WILLEMIJN QUAIJTAAL*
Affiliation:
Research Unit for Palaeontology, Department of Geology, Ghent University, Krijgslaan 281/S8, 9000 Gent, Belgium
STEVEN TESSEUR
Affiliation:
Research Unit for Palaeontology, Department of Geology, Ghent University, Krijgslaan 281/S8, 9000 Gent, Belgium
TIMME H. DONDERS
Affiliation:
Palaeoecology, Department of Physical Geography, Faculty of Geosciences, Utrecht University, Budapestlaan 4, 3584 CD Utrecht, the Netherlands TNO B&O, Geological Survey of The Netherlands, PO Box 80015, 3508 TA Utrecht, The Netherlands
PHILIPPE CLAEYS
Affiliation:
Earth System Sciences, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium
STEPHEN LOUWYE
Affiliation:
Research Unit for Palaeontology, Department of Geology, Ghent University, Krijgslaan 281/S8, 9000 Gent, Belgium
*
Author for correspondence: [email protected]

Abstract

Integrated Ocean Drilling Program Leg 307 Site U1318 is one of the few relatively complete middle Miocene drillcores from the North Atlantic (Porcupine Basin, offshore southwestern Ireland). Using benthic foraminiferal stable carbon and oxygen isotopes, the existing age model for Site U1318 was improved. The stable isotope record displays globally recognized isotope events, used to revise the existing magnetostratigraphy-based age model. Two intervals contained misidentified magnetochrons which were corrected. The sampled interval now has a refined age of 12.75–16.60 Ma with a temporal resolution of c. 29 ka.

Type
Original Article
Copyright
Copyright © Cambridge University Press 2017 

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