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- Title
A comparative case study of subglacial bedforms in northern Lithuania and south-eastern Iceland.
- Authors
Baltrūnas, Valentinas; Waller, Richard I.; Kazakauskas, Vaidotas; Paškauskas, Stasys; Katinas, Valentas
- Abstract
This paper aims to compare the dynamics of the subglacial environment as determined by an analysis of the structure and sedimentology of both Pleistocene and modem glacial deposits. Investigations focused on sub-glacial sediments in areas of streamlined relief in northern Lithuania (Ruopiskiai megascale subglacial lineations - MSGL) and south-eastern Iceland (drumlinised terrain exposed by the recent retreat of SkeiSararjokull glacier). Sedimentological analyses involved granulometry, till macrofabrics, and the anisotropy of magnetic susceptibility (AMS) of micro-clasts. Comparative investigations of subglacial bedforms exposed at Ruopiskiai and Skeidararjokull highlighted differences in then formation and post-genetic transformation. In both cases, their initiation was associated with ice advance and subglacial sediment deformation. However, subsequent dynamics were different.
- Subjects
LITHUANIA; ICELAND; GLACIAL landforms; DRUMLINS; SEDIMENTOLOGY; MAGNETIC susceptibility; SEDIMENTS; DEFORMATIONS (Mechanics)
- Publication
Baltica, 2014, Vol 27, Issue 2, p75
- ISSN
0067-3064
- Publication type
Case Study
- DOI
10.5200/baltica.2014.27.18