TY  - JOUR
AU  - Armelle Decaulne, Najat Bhiry
PY  - 2018//
TI  - Geomorphic evidence of Holocene slope dynamics on the Canadian shield – a study from Lac à l’Eau-Claire, western Nunavik
KW  - éboulis gélifraction Nunavik scree slope dynamics Talus
N2  - We present the results of a study of the morphometric properties of a talus slope in subarctic Quebec (Nunavik) using field-based methods, including geomorphological, granulometric and plant distribution surveys, and statistical analyses. Slope processes are currently active, despite the limited altitudinal difference between the apical-to-distal parts of the slope and the imminent depletion of the debris supply. The near-rectilinear long profiles of the talus highlight the distribution of debris across the slope and demonstrate that free-fall of rock fragments is not the only process operating (redistribution is higher in the westernmost profile, which exhibits a clear concave shape). The spatial distribution of vegetation covering the screes highlights the recent age of parts of the talus, showing that present-day processes are still active, although limited. The short remaining apical rockwall highlights the shortage of debris following deglaciation, as debris are mostly supplied by freeze-thaw processes to the talus, and are then reworked by other processes which need to be better defined in subsequent research.
SN  - 1195-6860
SN  - 1195-6860
UR  - http://dx.doi.org/10.1080/11956860.2018.1431376
N1  - exported from refbase (http://publi.ipev.fr/polar_references/show.php?record=7428), last updated on Fri, 05 Jul 2024 20:58:56 +0200
ID  - ArmelleDecaulne2018
ER  -