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 Westleton Series of East Anglia: its Age, Distribution, and Relations
TL;DR: Searles as discussed by the authors made use of the heavy mineral assemblages, which are obviously of great value in investigating the “directional” deposits formed from ice-borne material, and which are applicable equally to sands and gravels.
Journal ArticleDOI
An Early Pleistocene cold marine episode in the North Sea: pollen and faunal assemblages at Covehithe, Suffolk, England
TL;DR: For the first time arctic assemblages of both foraminifers and molluscs are recorded from this Baventian clay, which is now confirmed as representing the first cold stage of truly glacial intensity in the English marine Early Pleistocene succession as mentioned in this paper.
Journal ArticleDOI
Development of the Thames drainage system in Early and Middle Pleistocene times
TL;DR: In this paper, the authors trace the pre-Anglian terrace stages of the proto-Thames system from the present middle Thames area into Essex and south East Anglia.
Journal ArticleDOI
The Pleistocene Deposits of the Area Around Croft in South Leicestershire
TL;DR: In this paper, the Pleistocene sediments of an area of just over 100 km $2$ in south Leicestershire have been mapped and the first half of the paper describes their lithology and stratigraphy in terms of the units earlier identified by Shotton, Rice and Douglas.
Journal ArticleDOI
The Glacial Geology of the Derbyshire Dome and the Western Slopes of the Southern Pennines
TL;DR: The region dealt with in this paper is roughly triangular in shape, extending from its northern apex at Blackstone Edge, east of Littleborough, to beyond Crich in the south-east, and along the southern line of the Pennines to Madeley and Market Drayton in south-west as mentioned in this paper.