A new high precision, U-Pb date from the oldest known rocks in southern Britain

Schofield, D.I.; Millar, I.L.; Wilby, P.R.; Evans, J.A.. 2010 A new high precision, U-Pb date from the oldest known rocks in southern Britain. Geological Magazine, 147 (1). 145-150. 10.1017/S001675680999063X

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Abstract/Summary

A new high precision U–Pb zircon age of 710.8 ± 1.5 Ma for granophyric granitic rock from the Stanner Hanter Complex of the Welsh Borderland lies just within error of an older Rb–Sr isochron age. εNd values of −0.3 and −1.2 combined with TDM of 1394 Ma and 1468 Ma indicate that the magma incorporated an older crustal source component. The Nd data highlight differences with western Avalonia, the widely considered Late Neoproterozoic north American counterpart to southern Britain, and point toward a closer similarity with other Peri-Gondwanan terranes that incorporate older, cratonic source material.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.1017/S001675680999063X
Programmes:	BGS Programmes 2010 > Geology and Landscape (Wales)
ISSN:	0016-7568
Date made live:	04 Mar 2010 16:39 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/9431

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