Abstract
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
Highlights
The lithologic structure of cones reflects all depositional happenings connected with the development of these forms
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
During fieldwork concerning the issue of upland edge transformation in the region of Piaski Pomorskie (Western Pomerania) at the mouth of one of the erosional-denudational valleys there was an accumulative cone identified, whose deposits interfinger with peat deposits
Summary
The lithologic structure of cones reflects all depositional happenings connected with the development of these forms. The alluvial cones occurring in lake edge zones present the most complete and rich record of geological happenings (Sinkiewicz 1994) draws attention to it. As the cited author states, the interfingering of the cones’ deposits with the lacustrine formations makes it a lot easier to determine the stratigraphy of the cones. During fieldwork concerning the issue of upland edge transformation in the region of Piaski Pomorskie (Western Pomerania) at the mouth of one of the erosional-denudational valleys there was an accumulative cone identified, whose deposits interfinger with peat deposits. The sampled organic material subjected to 14C dating was used to estimate the age of the cone and the age of the dry valley associated with the cone.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
