RT Journal Article
SR Electronic
T1 How U–Pb detrital monazite ages contribute to the interpretation of the Pennine Basin infill
JF Journal of the Geological Society
JO Journal of the Geological Society
FD Geological Society of London
SP 741
OP 744
DO 10.1144/0016-764901-038
VO 158
IS 5
A1 EVANS, J. A.
A1 CHISHOLM, J. I.
A1 LENG, M. J.
YR 2001
UL http://jgs.lyellcollection.org/content/158/5/741.abstract
AB New U–Pb ages on detrital monazite from the Carboniferous of central England show a clear difference between populations from northerly and southeasterly derived sandstones. The northern source was responsible for most of the detritus that entered the basin during Namurian times and is dominated by monazites of Scandian age with normally distributed 235U/207Pb ages averaging 420 ± 7 Ma (2σ). One older grain gives a Proterozoic age of 2040 ± 1.4 Ma (2σ). The data suggest a source region within the Scandian orogen. Southeasterly derived sediments are more heterogeneous and show a range of Variscan, Acadian, Ordovician and Sveconorwegian ages. Variscan uplifting of terranes of central Europe would provide a suitable source for this assemblage.