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(Article of periodic en Anglais - 2009)

Document title

Uranium series dates from the windy pits of the North York Moors, United Kingdom : implications or late Quaternary ice cover and timing of speleogenesis

Authors(s) and Affiliation(s)

MURPHY P.J. (1) ; LUNDBERG J. (2) ;
(1) School of Earth and Environment, Univ., Leeds, ROYAUME-UNI
(2) Dep. of Geography and Environmental Studies, Carleton Univ., Ottawa, CANADA

Abstract

The AA. present 9 thermal ionization mass spectrometry (TIMS) U-Th dates on speleothem from the windy pits (open fissures within the Corallian strata of the North York Moors), the first radiometric dates on calcite for these featues and for this region. The dates cluster within 3 time periods : the interglacial peaks of marine isotope stage MIS 7, MIS 5 , and the Holocene, correlating with the marine isotope record and with the broad pattern of interglacial calcite deposition observed for northern England. The location of the windy pits outside of the Devensian ice limits, within the ice-free but periglaciated region, suggests taht the region has remained ice-free since some time before MIS 7. The prevalence of widespread and prolonged permafrost conditions suggests a plausible mechanism for these open rift caves in slope-side periglacial mass movement

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2009, vol. 34, no2 [pp. 305-313]

Bibliographic references : 1 p.

Collation : 5 fig., 1 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.1752

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2009
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