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Correlation of carbon with acid-soluble elements in Finnish lake sediments; two opposite composition trends

Jari Makinen and Hannu Pajunen
Correlation of carbon with acid-soluble elements in Finnish lake sediments; two opposite composition trends
Geochemistry - Exploration, Environment, Analysis (May 2005) 5 (2): 169-181

Abstract

Rank order correlation coefficients (r (sub C,X) ) were determined between C and the nitric acid-soluble elements Al, Ba, Ca, Co, Cr, Cu, Fe, K, Mg, Mn, P, S, Sr, Ti, V, Zn and N in lake sediments. Nitrogen and S concentrations increased together with C from the point of isolation towards the top of the sediment, whereas Ca, Cr, Cu, K, Mg, Na, Ni and Ti concentrations decreased. In the case of Al, Ba, Co, Fe, Mn, V and Zn, two divergent patterns were seen, their concentrations either decreasing or increasing towards the top of the sediment. Of the r (sub C,P) values, 91% were positive and 9% negative. The sediment cores were classified into three groups on the basis of the correlations between C and Co, Fe, Mn and Zn: (1) rC,Co, rC,Fe, r (sub C,Mn) and r (sub C,Zn) statistically significant and negative; (2) r (sub C,Co) , r (sub C,Fe) , r (sub C,Mn) and r (sub C,Zn) not statistically significant; and (3) r (sub C,Co) , r (sub C) , (sub Fe) , r (sub C,Mn) and r (sub C,Zn) statistically significant and positive. In the light of the geochemical properties of the sediments, it was concluded that those in group 1 had been deposited under reducing and/or acidic conditions in small, shallow lakes containing high concentrations of C and those in group 3 under oxidative and/or alkaline conditions in large, deep lakes, while those in group 2 represent intermediate forms. It was approximated that C< or =9% in sediment provides precipitation of Fe-Mn oxides, but it is impeded by greater C concentrations. Also, sedimentation of terrigenous till material was found to be more effective in small than in large lakes.


ISSN: 1467-7873
EISSN: 2041-4943
Serial Title: Geochemistry - Exploration, Environment, Analysis
Serial Volume: 5
Serial Issue: 2
Title: Correlation of carbon with acid-soluble elements in Finnish lake sediments; two opposite composition trends
Affiliation: Geological Survey of Finland, Kuopio, Finland
Pages: 169-181
Published: 200505
Text Language: English
Publisher: Geological Society Publishing House, London, United Kingdom
References: 46
Accession Number: 2005-071977
Categories: Geochemistry of rocks, soils, and sediments
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table
Source Medium: WWW
N59°45'00" - N70°00'00", E19°00'00" - E31°45'00"
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data from The Geological Society, London, London, United Kingdom
Update Code: 200543
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