IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2008  > Vol5 No.1
Post-sedimentary transformation of lateral moraines - the tributary tongue basins of the Kviarjokull (Iceland)
Iturrizaga, Lasafam
Corresponding AuthorIturrizaga, L
2008-03
Source PublicationJOURNAL OF MOUNTAIN SCIENCE
ISSN1672-6316
Volume5Issue:1Pages:1–16
AbstractThe Kviarjokull, a southern outlet glacier of the Vatnajokull, is confined in the mountain foreland by lateral moraines measuring a height of up to 150 in. Each of the lateral moraines shows considerable breaches with deviations of the main moraine ridges. The paper discusses the possible origins of these modifications of the lateral moraines as result of: 1) ice overlappings during glacier advances and subsequent breaches of the lateral moraine, 2) bifurcations of the Kviarjokull glacier tongue triggered by the preglacial relief conditions and the prehistorical moraine landscape leading to afflux conditions, 3) drainage of ice-marginal glacier lakes and 4. volcanic activities, such as lava flows and volcanic-induced jokulhlaups. A historic-genetic model of the formation of the lateral moraines is presented considering the breaches in the lateral moraines as result from glacier bifurcations and therefore as former tributary tongue basins. Such breaches in the lateral moraines are also common landscape features at glaciers outside of Iceland and are from wider importance for the paleoreconstruction of former glacier stages. The knowledge of their development is essential for an adequate relative age classification of individual moraine ridges. In regard to the origin of the debris supply areas of the large-sized Kviarjokull moraines, the resedimentation of prehistoric till deposits by younger glacier advances plays a role in the formation of the lateral moraines apart from englacial and supraglacial sediment transfer processes.
KeywordLateral Moraines Tributary Tongue Basin Glacier Bifurcation Glacier Lake Outburst Kvidrjokull
Language英语
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/6040
CollectionJournal of Mountain Science_Journal of Mountain Science-2008_Vol5 No.1
Recommended Citation
GB/T 7714
Iturrizaga, Lasafam. Post-sedimentary transformation of lateral moraines - the tributary tongue basins of the Kviarjokull (Iceland)[J]. JOURNAL OF MOUNTAIN SCIENCE,2008,5(1):1–16.
APA Iturrizaga, Lasafam.(2008).Post-sedimentary transformation of lateral moraines - the tributary tongue basins of the Kviarjokull (Iceland).JOURNAL OF MOUNTAIN SCIENCE,5(1),1–16.
MLA Iturrizaga, Lasafam."Post-sedimentary transformation of lateral moraines - the tributary tongue basins of the Kviarjokull (Iceland)".JOURNAL OF MOUNTAIN SCIENCE 5.1(2008):1–16.
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