Use of environmental magnetic measurements to characterize and correlate tephra: a case study in Iceland
Use of environmental magnetic measurements to characterize and correlate tephra: a case study in Iceland
A set of environmental magnetic parameters (i.e. magnetic susceptibility, ?ARM, IRMs, hysteresis loops and thermomagnetic curves) has been applied to two soil sections from SE Iceland. Results demonstrate that the main magnetic minerals in the tephras are ferrimagnetic minerals (e.g. magnetite) and canted antiferromagnetic minerals (e.g. haematite), with abundant paramagnetic material also present. Cross plots of Mrs/Ms vs. (B0)cr/(B0)c and ?fd? vs. ?ARM/SIRM indicate that the main magnetic grain sizes in tephras are pseudo single domain (PSD) and multidomain (MD). Initial correlation of tephra layers was achieved, using all the measured magnetic parameters, by use of the multivariate statistical measures of Similarity Coefficient (SC) and Euclidean Distance (ED). This demonstrates that magnetic techniques can potentially assist in the identification and correlation of distal tephra.
286-294
Ming, J.
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Dearing, J.A.
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Chiverrell, R.C.
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Bloemendal, J.
5ae09dd4-c89b-47f8-a7e6-f3f1ed4c5ddb
Xia, D.S.
a145eb03-da24-4f39-abb1-66992d4a1b29
2004
Ming, J.
caabf0b1-4317-44c4-8ecd-05de1927da33
Dearing, J.A.
dff37300-b8a6-4406-ad84-89aa01de03d7
Chiverrell, R.C.
871036e0-7d07-4907-aeaa-4d63f72eeed3
Bloemendal, J.
5ae09dd4-c89b-47f8-a7e6-f3f1ed4c5ddb
Xia, D.S.
a145eb03-da24-4f39-abb1-66992d4a1b29
Ming, J., Dearing, J.A., Chiverrell, R.C., Bloemendal, J. and Xia, D.S.
(2004)
Use of environmental magnetic measurements to characterize and correlate tephra: a case study in Iceland.
Chinese Science Bulletin, 49 (3), .
Abstract
A set of environmental magnetic parameters (i.e. magnetic susceptibility, ?ARM, IRMs, hysteresis loops and thermomagnetic curves) has been applied to two soil sections from SE Iceland. Results demonstrate that the main magnetic minerals in the tephras are ferrimagnetic minerals (e.g. magnetite) and canted antiferromagnetic minerals (e.g. haematite), with abundant paramagnetic material also present. Cross plots of Mrs/Ms vs. (B0)cr/(B0)c and ?fd? vs. ?ARM/SIRM indicate that the main magnetic grain sizes in tephras are pseudo single domain (PSD) and multidomain (MD). Initial correlation of tephra layers was achieved, using all the measured magnetic parameters, by use of the multivariate statistical measures of Similarity Coefficient (SC) and Euclidean Distance (ED). This demonstrates that magnetic techniques can potentially assist in the identification and correlation of distal tephra.
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Published date: 2004
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Local EPrints ID: 55661
URI: http://eprints.soton.ac.uk/id/eprint/55661
ISSN: 1001-6538
PURE UUID: e057004f-d959-453b-b386-32b7e75b9191
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Date deposited: 26 Aug 2008
Last modified: 09 Jan 2022 03:15
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Author:
J. Ming
Author:
R.C. Chiverrell
Author:
J. Bloemendal
Author:
D.S. Xia
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