Sediment-magnetic signature of land-use and drought as recorded in lake sediment from south-central Minnesota, USA

Christoph E. Geiss; Subir K. Banerjee; Phil Camill; Charles E. Umbanhowar

doi:10.1016/j.yqres.2004.06.009

Sediment-magnetic signature of land-use and drought as recorded in lake sediment from south-central Minnesota, USA

Christoph E. Geiss, Subir K. Banerjee, Phil Camill, Charles E. Umbanhowar

Continental Scientific Drilling Facility

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

Sediment magnetic properties of a short core from Sharkey Lake, MN, record the effects of Euroamerican settlement and climate change over the last 150 yr. The onset of European-style farming led to increased erosion, reflected in high values of concentration-dependent parameters such as magnetic susceptibility (k), Isothermal Remanent Magnetization (IRM), and Anhysteretic Remanent Magnetization (ARM). These high values are only partially due to increased supply of terrigenous material to the lake, and recent sediment contains an additional component of authigenic fine (single-domain) magnetite, most likely magnetosomes from magnetotactic bacteria. High organic productivity in the lake during the 1920s to 1940s drought increased this authigenic component resulting in highly magnetic fine-grained sediment. A comparison with older Holocene sediment from the same lake shows that, over time, most of the fine magnetic signal is lost after deposition, leading to decreases in magnetization and a bimodal grain size distribution of ultrafine, superparamagnetic grains and coarser multidomain particles, evident from measurements of ARM/IRM ratios, hysteresis measurements, and low-temperature analyses. The effects of dissolution and the superposition of climate and land-use signals complicate the use of recent sediments as modern analogs for sediment magnetic analyses.

Original language	English (US)
Pages (from-to)	117-125
Number of pages	9
Journal	Quaternary Research
Volume	62
Issue number	2
DOIs	https://doi.org/10.1016/j.yqres.2004.06.009
State	Published - Sep 2004

Bibliographical note

Funding Information:
We thank Margaret Sharkey for generous access to the site. The magnetic analyses were performed at the Institute for Rock Magnetism, which is funded by the W.M. Keck Foundation, the NSF Earth Sciences Division's Instrumentation and Facilities Program, and the University of Minnesota. Part of this study was funded by NSF/ATM grant 9909523 and grants by the Howard Hughes Medical Institute to Carleton and St. Olaf Colleges. L. Dvorak, J. Aldinger, and K. Walkup performed analyses of biogenic silica. The comments of S. Colman and an anonymous reviewer helped to greatly improve the manuscript. We thank Greg Spoden, MN State Climatology Office, for providing us with the unpublished climate data for Ft. Snelling, MN.

Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.

Keywords

Drought
Holocene
Limnology
Magnetotactic bacteria
Reductive dissolution
Sediment magnetism

Continental Scientific Drilling Facility tags

UMB

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Publisher link

10.1016/j.yqres.2004.06.009

Find It

Find It at U of M Libraries

Cite this

@article{da38a28ee6d44a7b8d43ccf81366c143,

title = "Sediment-magnetic signature of land-use and drought as recorded in lake sediment from south-central Minnesota, USA",

abstract = "Sediment magnetic properties of a short core from Sharkey Lake, MN, record the effects of Euroamerican settlement and climate change over the last 150 yr. The onset of European-style farming led to increased erosion, reflected in high values of concentration-dependent parameters such as magnetic susceptibility (k), Isothermal Remanent Magnetization (IRM), and Anhysteretic Remanent Magnetization (ARM). These high values are only partially due to increased supply of terrigenous material to the lake, and recent sediment contains an additional component of authigenic fine (single-domain) magnetite, most likely magnetosomes from magnetotactic bacteria. High organic productivity in the lake during the 1920s to 1940s drought increased this authigenic component resulting in highly magnetic fine-grained sediment. A comparison with older Holocene sediment from the same lake shows that, over time, most of the fine magnetic signal is lost after deposition, leading to decreases in magnetization and a bimodal grain size distribution of ultrafine, superparamagnetic grains and coarser multidomain particles, evident from measurements of ARM/IRM ratios, hysteresis measurements, and low-temperature analyses. The effects of dissolution and the superposition of climate and land-use signals complicate the use of recent sediments as modern analogs for sediment magnetic analyses.",

keywords = "Drought, Holocene, Limnology, Magnetotactic bacteria, Reductive dissolution, Sediment magnetism",

author = "Geiss, {Christoph E.} and Banerjee, {Subir K.} and Phil Camill and Umbanhowar, {Charles E.}",

note = "Funding Information: We thank Margaret Sharkey for generous access to the site. The magnetic analyses were performed at the Institute for Rock Magnetism, which is funded by the W.M. Keck Foundation, the NSF Earth Sciences Division's Instrumentation and Facilities Program, and the University of Minnesota. Part of this study was funded by NSF/ATM grant 9909523 and grants by the Howard Hughes Medical Institute to Carleton and St. Olaf Colleges. L. Dvorak, J. Aldinger, and K. Walkup performed analyses of biogenic silica. The comments of S. Colman and an anonymous reviewer helped to greatly improve the manuscript. We thank Greg Spoden, MN State Climatology Office, for providing us with the unpublished climate data for Ft. Snelling, MN. Copyright: Copyright 2011 Elsevier B.V., All rights reserved.",

year = "2004",

month = sep,

doi = "10.1016/j.yqres.2004.06.009",

language = "English (US)",

volume = "62",

pages = "117--125",

journal = "Quaternary Research",

issn = "0033-5894",

publisher = "Academic Press Inc.",

number = "2",

}

TY - JOUR

T1 - Sediment-magnetic signature of land-use and drought as recorded in lake sediment from south-central Minnesota, USA

AU - Geiss, Christoph E.

AU - Banerjee, Subir K.

AU - Camill, Phil

AU - Umbanhowar, Charles E.

N1 - Funding Information: We thank Margaret Sharkey for generous access to the site. The magnetic analyses were performed at the Institute for Rock Magnetism, which is funded by the W.M. Keck Foundation, the NSF Earth Sciences Division's Instrumentation and Facilities Program, and the University of Minnesota. Part of this study was funded by NSF/ATM grant 9909523 and grants by the Howard Hughes Medical Institute to Carleton and St. Olaf Colleges. L. Dvorak, J. Aldinger, and K. Walkup performed analyses of biogenic silica. The comments of S. Colman and an anonymous reviewer helped to greatly improve the manuscript. We thank Greg Spoden, MN State Climatology Office, for providing us with the unpublished climate data for Ft. Snelling, MN. Copyright: Copyright 2011 Elsevier B.V., All rights reserved.

PY - 2004/9

Y1 - 2004/9

N2 - Sediment magnetic properties of a short core from Sharkey Lake, MN, record the effects of Euroamerican settlement and climate change over the last 150 yr. The onset of European-style farming led to increased erosion, reflected in high values of concentration-dependent parameters such as magnetic susceptibility (k), Isothermal Remanent Magnetization (IRM), and Anhysteretic Remanent Magnetization (ARM). These high values are only partially due to increased supply of terrigenous material to the lake, and recent sediment contains an additional component of authigenic fine (single-domain) magnetite, most likely magnetosomes from magnetotactic bacteria. High organic productivity in the lake during the 1920s to 1940s drought increased this authigenic component resulting in highly magnetic fine-grained sediment. A comparison with older Holocene sediment from the same lake shows that, over time, most of the fine magnetic signal is lost after deposition, leading to decreases in magnetization and a bimodal grain size distribution of ultrafine, superparamagnetic grains and coarser multidomain particles, evident from measurements of ARM/IRM ratios, hysteresis measurements, and low-temperature analyses. The effects of dissolution and the superposition of climate and land-use signals complicate the use of recent sediments as modern analogs for sediment magnetic analyses.

AB - Sediment magnetic properties of a short core from Sharkey Lake, MN, record the effects of Euroamerican settlement and climate change over the last 150 yr. The onset of European-style farming led to increased erosion, reflected in high values of concentration-dependent parameters such as magnetic susceptibility (k), Isothermal Remanent Magnetization (IRM), and Anhysteretic Remanent Magnetization (ARM). These high values are only partially due to increased supply of terrigenous material to the lake, and recent sediment contains an additional component of authigenic fine (single-domain) magnetite, most likely magnetosomes from magnetotactic bacteria. High organic productivity in the lake during the 1920s to 1940s drought increased this authigenic component resulting in highly magnetic fine-grained sediment. A comparison with older Holocene sediment from the same lake shows that, over time, most of the fine magnetic signal is lost after deposition, leading to decreases in magnetization and a bimodal grain size distribution of ultrafine, superparamagnetic grains and coarser multidomain particles, evident from measurements of ARM/IRM ratios, hysteresis measurements, and low-temperature analyses. The effects of dissolution and the superposition of climate and land-use signals complicate the use of recent sediments as modern analogs for sediment magnetic analyses.

KW - Drought

KW - Holocene

KW - Limnology

KW - Magnetotactic bacteria

KW - Reductive dissolution

KW - Sediment magnetism

UR - http://www.scopus.com/inward/record.url?scp=4644311709&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=4644311709&partnerID=8YFLogxK

U2 - 10.1016/j.yqres.2004.06.009

DO - 10.1016/j.yqres.2004.06.009

M3 - Article

AN - SCOPUS:4644311709

SN - 0033-5894

VL - 62

SP - 117

EP - 125

JO - Quaternary Research

JF - Quaternary Research

IS - 2

ER -

Sediment-magnetic signature of land-use and drought as recorded in lake sediment from south-central Minnesota, USA

Abstract

Bibliographical note

Keywords

Continental Scientific Drilling Facility tags

UN SDGs

Publisher link

Find It

Other files and links

Fingerprint

Cite this