Grain-size distribution and structural characteristics of varved sediments from Lake Żabińskie (northeastern Poland)

Maurycy Jacek Żarczyński , Jacek Szmańda , Wojciech Tylmann

Abstract

Typically, the description of varve microfacies is based on microscopic sedimentary structures, while standard grain-size analysis is commonly applied with lower resolution. Studies involving a direct comparison of varve microfacies and particle-size distributions, common for clastic environments, are scarce for biogenic varves. In this study, we analyzed nine-year resolution grain-size data from Lake Żabińskie (northeastern Poland) to detect differences between varve microfacies. Six varve microfacies were differentiated using grain-size distributions and sedimentological attributes (calcite layer thickness, dark layer thickness, mass accumulation rate). However, changes in particle-size distributions between different varve types are relatively small and indicate a similar source for the material deposited. Decomposition of grain-size distributions with the end-member approach allows recognition of relative changes for the deposition of allochthonous (mineral) and autochthonous (carbonates, (hydr)oxides) components. Grain-size data suggest that sources of allochthonous material remained constant, while varve formation was controlled mostly by in-lake processes.
Author Maurycy Jacek Żarczyński (FOG / IG / DGQG)
Maurycy Jacek Żarczyński,,
- Department of Geomorphology and Quarternary Geology
, Jacek Szmańda
Jacek Szmańda,,
-
, Wojciech Tylmann (FOG / IG / DGQG)
Wojciech Tylmann,,
- Department of Geomorphology and Quarternary Geology
Journal seriesQuaternary, ISSN 2571-550X, (0 pkt)
Issue year2019
Vol2
No1
Pages1-15
Publication size in sheets0.7
Article number8
Keywords in Englishvarves, lake sediments, grain-size, end-members
DOIDOI:10.3390/quat2010008
URL https://doi.org/10.3390/quat2010008
Languageen angielski
LicenseJournal (articles only); published final; Uznanie Autorstwa (CC-BY); with publication
Score (nominal)5
ScoreMinisterial score = 0.0, 17-06-2019, ArticleFromJournal
Ministerial score (2013-2016) = 5.0, 17-06-2019, ArticleFromJournal - czasopismo zagraniczne spoza list
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