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Book Chapter

A review of Devonian time scales: databases, construction and new data

By
E.A. Williams
E.A. Williams
1
CRPG–CNRS, B.P. 20, 54501 Vandoeuvre-lès-Nancy cedex, France
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P.F. Friend
P.F. Friend
2
Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ, UK
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B.P.J. Williams
B.P.J. Williams
3
Department of Geology and Petroleum Geology, University of Aberdeen, Meston Building, King's College, Aberdeen AB24 3UE, UK
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Published:
January 01, 2000

Abstract

Aspects of the isotopic age and stratigraphical databases underpinning Devonian geological time scales are reviewed to assess differences in recent U–Pb zircon-based schemes and older schemes based on Rb–Sr, K–Ar, 40Ar–39Ar dating of minerals and whole-rock samples. The various methods of time-scale construction are described and, with their databases, 14 calibrations of Devonian time are discussed. Finally, the most recent data are collated and compared against current U–Pb-based time scales.

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Contents

Geological Society, London, Special Publications

New Perspectives on the Old Red Sandstone

Geological Society of London
Volume
180
ISBN electronic:
9781862394285
Publication date:
January 01, 2000

GeoRef

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