Landscapes and Landforms of Eastern Canada
Landscapes and Landforms of Eastern Canada
复制标题
加拿大东部的风景和地貌
DOI:
10.1007/978-3-030-35137-3_4
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Stokes C
中科院分区:
文献类型:
--
作者:
Stokes C
This case study focuses on the glacial landscapes of the low-relief tundra of the Canadian Shield of mainland Nunavut, west of Hudson Bay. Having been studied for well over a century, the glacial geomorphology of the region is spectacular and is widely recognised as being of international significance to palaeo-glaciology. At the global Last Glacial Maximum, the region lay close to the centre of the former Laurentide Ice Sheet and was submerged beneath a large (>3 km thick) ice dome, and with a major ice divide orientated roughly north-east to south-west (the Keewatin Ice Divide). This was an important influence on the distribution of glacial landforms and the aim of this chapter is to provide a concise overview of the key landform assemblages and their zonation around the Keewatin Ice Divide with a particular focus on hummocky terrain, ribbed moraines, drumlins, mega-scale glacial lineations, meltwater features, end moraines, and raised beaches and shorelines related to proglacial lakes and marine transgression. It is clear that whilst the distribution of landforms is a complex interplay between the overriding ice sheet properties (thickness, velocity, basal thermal regime) and the underlying geology, a detailed analysis of these landscapes has led to some important advances in our broader understanding of ice sheet dynamics and glacial geomorphology, particularly in the area of drift dispersal, the migration of ice divides, ice streaming and the evolution of subglacial meltwater drainage systems.
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影响因子:
2.3
作者:
P. Clark;W. Fitzhugh
通讯作者:
W. Fitzhugh
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
N. Eyles;N. Putkinen
通讯作者:
N. Putkinen
影响因子:
4.4
作者:
Logan M. Ashall;R. Mulligan;B. Law
通讯作者:
Logan M. Ashall;R. Mulligan;B. Law
DOI:
10.1016/s1571-0866(04)80199-4
发表时间:
2004
期刊:
Developments in Quaternary Science
影响因子:
--
作者:
R. Stea
通讯作者:
R. Stea
影响因子:
1.4
作者:
T. Fisher;J. Shaw
通讯作者:
J. Shaw