N.E.G.S. has given a grant of £200 to assist Lynda Yorke in her PhD. research. An outline of her research project is given below. We look forward to her giving N.E.G.S. a presentation on Nov. 16th 2007
Late Quaternary valley fill sediments in the River Tyne Valley, Northumberland, UK: understanding late Devensian (26-13 ka BP) deglaciation and post-glacial response in north-eastern Britain
Lynda Yorke
Department of Geography,
The University of Hull,
Hull, HU6 7RX, UK
L.Yorke@hull.ac.uk
The Tyne Valley lies within the limits of the last
glacial advance of the Late Devensian (delta18
Stage 2), and was affected by ice streams from both the Lake
District and south-west Scotland, and from the Southern
uplands. As a result the valley was infilled with both glacial
and deglacial sediments, forming a sequence of sediment-landform
assemblages. The landforms are particularly prominent along the
length of the Tyne Valley between its lower and mid valley
reaches. The assemblages that crop out above the Holocene
valley floor vary both spatially and sedimentologically. The
lower valley is dominated by complexes of undulating landforms mostly
underlain by sands whereas the mid valley is characterised by
terraces up to 20 m above present river level underlain by gravels.
The aims of the PhD were to: clarify the genesis of the deposits; to
elucidate the deglacial and early post-glacial history of the region;
and to develop a geochronological framework that would allow the Tyne
Valley to be compared with other available models of deglaciation in
the UK. The methodology involved detailed field survey and
geomorphological mapping, DEM visualizations, an exposure-recording
programme, spatial modelling and sediment budgeting, and a programme
of optical luminescence dating.
Find more about me at: http://www.hull.ac.uk/php/ggsly/
Read about my research in the Tyne Valley:
Yorke, L., Fuller, I. C., Howard, A. J. and Passmore, D. G. (2007).
Preliminary investigations of outwash environments in the Tyne
Valley: implications for Late Devensian (Dimlington Stadial)
deglaciation. Proceedings of the Geologists' Association, 118, 201-211
For her report on the Canadian Quaternary
Association Conference, Ottawa 3rd - 8th June 2007 which
she attended, click here.
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