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This volume describes important sites in the Pleistocene deposits of the Thames terrace system laid down by the Thames and its tributaries. It correlates the Thames sequence with deposits found elsewhere in Britain, on the European continent and on the ocean floor.
This volume is an integrated overview and synthesis of available data relating to the Quaternary evolution of the River Trent. It provides detailed descriptions of the Pleistocene sedimentary records from the Trent, its tributaries and related drainage systems - a sedimentary record that spans a period of approximately half a million years - and the biostratigraphical and archaeological material preserved therein. Significant new data are presented from recently discovered sites of geological and archaeological importance, including previously unrecognised fluvial deposits, as well as novel analyses, such as mathematical modelling of fluvial incision as recorded by the river terrace deposits. In combination with a thorough review of the literature on the Trent, these new data have contributed to revised chronostratigraphical and palaeogeographical frameworks for central England and revealed the complexity of the Pleistocene fluvial and glacial records in this region. The fragmentary Trent terrace sequence is an important element of wider reconstructions of Pleistocene palaeodrainage in Britain, providing a link between the records preserved in the English Midlands and those in East Anglia.
At head of title: British Geological Survey.
The book presents an up-to-date, detailed overview of the Quaternary glaciations all over the world, not only with regard to stratigraphy but also with regard to major glacial landforms and the extent of the respective ice sheets. The locations of key sites are included. The information is presented in digital, uniformly prepared maps which can be used in a Geographical Information System (GIS) such as ArcView or ArcGIS. The accompanying text supplies the information on how the data were obtained (geomorphology, geological mapping, air photograph evaluation, satellite imagery), how the features were dated (14C, TL, relative stratigraphy) and how reliable they are supposed to be. All references to the underlying basic publications are included. Where controversial interpretations are possible e.g. in Siberia or Tibet, this is pointed out. As a result, the information on Quaternary glaciations worldwide will be much improved and supplied in a uniform digital format. The information on the glacial limits is compiled in digital form by the coordinators of the project, and is available for download at: http://booksite.elsevier.com/9780444534477/ Completely updated detailed coverage of worldwide Quaternary glaciations Information in digital, uniformly prepared maps which can be used in a GIS such as ArcView or ArcGis Step-by-step guideline how to open and use ArcGis files Possibility to convert the shapefiles into GoogleEarth kmz-files Availability of chronological controls
STRUCTURE OF THE VOLUME AND TERMINOLOGY USED This book contains scientific descriptions of 63 localities (Figure A) of at least national importance for Quaternary geology, geomorphology and environmental change in South-West England. These sites were selected by the Geological Conservation Review and are accordingly designated 'GCR' sites. Chapter 1 provides an introduction to the Quaternary. Chapter 2 synthesizes the geomorphological development and Quaternary history of the region, and outlines the principles involved in site selection. The individual GCR site descriptions form the core of the book. In the following chapters, sites are arranged and described in broad geographic areas and by research topic. This is necessitated by the widely disparate nature of the field evidence in Soutb West England: sites demonstrating the full range of Quaternary and geomorphological features are not evenly and conveniently dispersed throughout the region, and some areas have significant gaps. Neither do the individual chapters contain sites that neces sarily equate with particular site selection networks. Rather, the chosen chapter headings provide the least repetitive means of describing the sites and background material. Where possible, a chronological approach, from oldest to youngest, has been used to describe sites within a given chapter. Again, this approach is not always possi ble, and a group of sites may show variations on landform or Stratigraphie evidence broadly within one major time interval or chronostratigraphic stage; inevitably there are many overlaps.
The correlation and classification of Quaternary deposits is desirable for the following reasons: as an exercise in lithostratigraphy, to find out about palaeoclimate and to provide standard geographical information.