The developmental stages of an accumulative cone of dry valley as an indication of change in natural environment conditions (Western Pomerania)
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Date
2013
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Wydział Nauk Geograficznych i Geologicznych Uniwersytetu im. Adama Mickiewicza
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Abstract
The aim of this paper is to present the stages of development of an alluvial cone as an indication of
change in natural environment conditions. a detailed research was conducted within the upland regions of
Drawsko Lakeland. At the valley mouth of one of the erosional-denudational valleys an alluvial cone in question
splays out. The imparity between the capacity of the erosional-denudational valley and the capacity of the
alluvial cone indicates that the main stage of erosion had taken place before the cone’s deposition. During the
beginning stage the material acquired from the dissection was most likely delivered directly to the channel of
Dębnica river and was incorporated in the fluvial transport. The cone was formed during the later stage. The
results of the radiocarbon analyses reveal that the formation of the alluvial cone and the valley associated with
the cone took place during the Subatlantic. It was also estimated that the cone aggraded with the rate of approximately
3,9 mm per year.
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Keywords
erosional-denudation valley, alluvial cone, Drawsko Lakeland, West Pomerania
Citation
Quaestiones Geographicae vol. 32 (1), 2013, pp. 16-20