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GEOREF RECORD

Geochemistry of surface sediments of Minnesota lakes

Walter E. Dean, Eville Gorham and Dalway J. Swaine
Geochemistry of surface sediments of Minnesota lakes (in Elk Lake, Minnesota; evidence for rapid climate change in the north-central United States, J. Platt Bradbury (editor) and Walter E. Dean (editor))
Special Paper - Geological Society of America (1993) 276: 115-133

Abstract

Analyses of 36 trace, minor, and major elements were used to classify the sediments of 46 Minnesota lakes. Q-mode factor analyses grouped Minnesota lake sediments according to clastic-, carbonate-, organic-, and redox-related elements. Carbonate lakes occur in west-central Minnesota; their sediments have relatively high concentrations of CaCO (sub 3) , Ba, and Sr. Lakes with sediments containing more than 30% organic matter occur in east-central and northeastern Minnesota; these sediments have high concentrations of organic C, N, and H, and slightly elevated concentrations of Pb. Only three lakes have sediments included in the "redox" group, with relatively high concentrations of Fe, Mn, Mo, La, and Zn. High concentrations of redox-sensitive elements appear to be associated with oxidized iron and manganese minerals, but in Elk Lake, one of the three lakes in this group, a significant amount of iron and manganese is contained in iron phosphate, iron sulfide, and manganese carbonate. Clastic lake sediments are not diluted by large amounts of organic matter, carbonate minerals, or iron-manganese minerals, and are of two types: a western group derived largely from Cretaceous shales in the prairie regions, and a northeastern group derived from Precambrian crystalline rocks in the forested arrowhead region. Western clastic lake sediments have higher concentrations of Al, Na, K, B, Ba, V, Mg, and Sr. Most northeastern clastic lake sediments contain higher concentrations of Cu, Y, Be, and Ni, but several are chemically more similar to those of western prairie lakes.


ISSN: 0072-1077
EISSN: 2331-219X
Coden: GSAPAZ
Serial Title: Special Paper - Geological Society of America
Serial Volume: 276
Title: Geochemistry of surface sediments of Minnesota lakes
Title: Elk Lake, Minnesota; evidence for rapid climate change in the north-central United States
Author(s): Dean, Walter E.Gorham, EvilleSwaine, Dalway J.
Author(s): Bradbury, J. Platteditor
Author(s): Dean, Walter E.editor
Affiliation: U. S. Geological Survey, Denver, CO, United States
Affiliation: U. S. Geological Survey, Denver, CO, United States
Pages: 115-133
Published: 1993
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
ISBN: 0-8137-2276-4
References: 35
Accession Number: 1993-033218
Categories: Geochemistry of rocks, soils, and sediments
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 7 tables, sketch maps
N43°30'00" - N49°00'00", W97°10'00" - W89°45'00"
Secondary Affiliation: University of Minnesota, USA, United StatesCSIRO, AUS, Australia
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 1993
Program Name: USGSOPNon-USGS publications with USGS authors
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