Book ChapterDOI
Pleistocene glacial limits in England, Scotland and Wales
Reads0
Chats0
TLDR
The evidence for glaciation of England, Scotland, and Wales is primarily lithological with glacial episodes being identified by till and glacio-fluvial sediments and glacial limits being determined by the extent of these deposits as discussed by the authors.Abstract:
This chapter reviews the evidence for glacial limits in England, Scotland, and Wales as understood at the beginning of 2002. Evidence for glaciation of England, Scotland, and Wales is primarily lithological with glacial episodes being identified by till and glaciofluvial sediments and glacial limits being determined by the extent of these deposits. Additionally, geomorphological evidence has played an important role in reconstructing the extent of ice masses in younger glaciations. Moraine ridges and ice-contact landforms, including patterns of glacio-isostatically deformed displaced shorelines, have played an important role in the determination of ice limits of these younger glacial events. Biological evidence has played a role in separating glacial events and in indicating a tendency toward climatic deterioration, or the existence of cold conditions that may be associated with glaciation. In the majority of cases, this biological evidence has taken the form of pollen, but molluska and plant macros have also been used to differentiate different stages of the Quaternary and insect faunas to provide direct evidence for the presence of glacial meltwater. Soil evidence, usually in the form of permafrost structures, has been used to indicate cold climate conditions that have been linked with the formation of glacier ice elsewhere in England, Wales, and Scotland.read more
Citations
More filters
Journal ArticleDOI
Late quaternary ice sheet history of northern Eurasia
John Inge Svendsen,Helena Alexanderson,Valery Astakhov,Igor Demidov,Julian A. Dowdeswell,Svend Funder,Valery Gataullin,Mona Henriksen,Christian Hjort,Michael Houmark-Nielsen,Hans Hubberten,Ólafur Ingólfsson,Martin Jakobsson,Kurt H. Kjær,Eiliv Larsen,Hanna Lokrantz,Juha Pekka Lunkka,Astrid Lyså,Jan Mangerud,Alexei Matiouchkov,Andrew S. Murray,Per Möller,Frank Niessen,Olga Nikolskaya,Leonid Polyak,Matti Saarnisto,Christine Siegert,Martin J. Siegert,Robert F Spielhagen,Ruediger Stein +29 more
TL;DR: In this paper, the maximum limits of the Eurasian ice sheets during four glaciations have been reconstructed: (1) the Late Saalian (>140 ka), (2) the Early Weichselian (100-80 ka),(3) the Middle Weichsellian (60-50 ka), and (4) the late Weichselsian (25-15 ka) based on satellite data and aerial photographs combined with geological field investigations in Russia and Siberia, and with marine seismic and sediment core data.
Journal ArticleDOI
Pattern and timing of retreat of the last British-Irish Ice Sheet
TL;DR: In this paper, the authors reconstruct the demise of the British-Irish Ice Sheet (BIIS) and present palaeo-glaciological maps of retreat stages between 27 and 15 ka BP.
Journal ArticleDOI
The extent and chronology of Cenozoic Global Glaciation
Jürgen Ehlers,Philip L. Gibbard +1 more
TL;DR: The Quaternary is synonymous with extensive glaciation of Earth's mid-and high-latitudes as discussed by the authors, and significant glaciation began in the latest Eocene (ca 35-Ma) in eastern Antarctica, followed by glaciation in mountain areas through the Miocene (in Alaska, Greenland, Iceland and Patagonia), later in the Pliocene (e.g. in the Bolivian Andes and possibly in Tasmania) and in the earliest Pleistocene (i.e.
Journal ArticleDOI
Ancient Hybridization and an Irish Origin for the Modern Polar Bear Matriline
Ceiridwen J. Edwards,Marc A. Suchard,Philippe Lemey,John J. Welch,Ian Barnes,Tara L. Fulton,Ross Barnett,Tamsin C. O'Connell,Peter Coxon,Nigel T. Monaghan,Cristina Valdiosera,Eline D. Lorenzen,Eske Willerslev,Gennady F. Baryshnikov,Andrew Rambaut,Mark G. Thomas,Mark G. Thomas,Daniel G. Bradley,Beth Shapiro +18 more
TL;DR: The reconstructed matrilineal history of brown and polar bears has two striking features: first, it is punctuated by dramatic and discrete climate-driven dispersal events, and second, opportunistic mating between these two species as their ranges overlapped has left a strong genetic imprint.
Journal ArticleDOI
Late Pleistocene evolution of the Rhine-Meuse system in the southern North Sea basin: imprints of climate change, sea-level oscillation and glacio-isostacy
Freek S. Busschers,Cornelis Kasse,R.T. van Balen,Jef Vandenberghe,Kim M. Cohen,H.J.T. Weerts,Jakob Wallinga,C. Johns,P. Cleveringa,F.P.M. Bunnik +9 more
TL;DR: In this paper, high-resolution continuous core material, geophysical measurements and hundreds of archived core descriptions enabled to identify 13 Late Pleistocene Rhine-Meuse sedimentary units in the infill of the southern part of the North Sea basin (the Netherlands, northwestern Europe).
References
More filters
Journal ArticleDOI
The Distribution, Variation and Origins of Pre-Devensian Tills in Eastern England
TL;DR: In this article, the authors measured calcium carbonate contents and mechanical properties of pre-Devensian tills in eastern England, and found that the tills may be divided into two groups: (a) a North Sea Drift group consisting of the Norwich Brickearth, the Cromer Tills, the Marly Drift of Cromer type and till members of the Contorted Drift, which is characterized by high sand and low opaque heavy mineral contents; and (b) a Lowestoft Till group including the Lowmostoft Till of East Anglia, the
Journal ArticleDOI
Subglacial bedform geomorphology of the Irish Ice Sheet reveals major configuration changes during growth and decay
Chris D. Clark,Robert T. Meehan +1 more
TL;DR: Using a high resolution (25 m) digital elevation model, the authors presented morphological maps of a large part (100 × 100 km) of the so-called Drumlin Belt of north central Ireland.
Journal ArticleDOI
Glacial deposits in Great Britain and Ireland
TL;DR: The Glacial deposits in North-West Europe as mentioned in this paper is a detailed assessment of the glacial deposits of Britain and Ireland, which includes 368 figures, 40 tables and 51 colour photographs, a detailed index and a list of over 1000 references.
Journal ArticleDOI
Soils and quaternary landscape evolution
A. S. Goudie,John Boardman +1 more
TL;DR: The authors examines a period of spectacular environmental change, the Quaternary, with respect to soil-landscape relationships in Western Europe, the British Isles and North America, and the possibilities for using soils as climatic indicators in the same way as fossils are discussed.
Journal ArticleDOI
The glaciations of East Anglia and the East Midlands: a differentiation based on stone-orientation measurements of the tills
TL;DR: In this paper, the long-axis orientation of stones in Older Drift tills of East Anglia and the East Midlands has been used to determine the direction of ice movement, together with the stratigraphical evidence of certain of the tills measured, to distinguish three successive episodes of ice advance.