| Autor: |
Möller, Per, Dowling, Thomas P.F. |
| Předmět: |
|
| Zdroj: |
GFF; Dec2015, Vol. 137 Issue 4, p252-283, 32p |
| Abstrakt: |
In this paper we synthesise previous sedimentological studies and new, high resolution, digital elevation models (DEMs) from southern Småland to investigate the evolution of a deglacial landscape. Starting approximately at the deglacial highest shoreline, there is a 20– 40-km-wide zone of ribbed and hummocky moraine that can be connected to the predominantly subaqueous Göteborg moraine. North of this there is a dramatic shift into streamlined terrain. Based on sedimentological investigations we conclude that these zones represent a sub/supraglacial stagnant-ice landsystem, followed by a subglacial active ice landsystem, which during their formations had very different thermal and process regimes along the ice-bed interface (freezing on/frozen versus wet-based basal regimes). New observations derived from high resolution, Light Detecting and Ranging DEMs reveal patterns of erosional/depositional and morphostratigraphic relationships that have not previously been observed, opening up gateways for future research. [ABSTRACT FROM PUBLISHER] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
