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dc.contributor.authorGehrels, Maria J.
dc.contributor.authorNewnham, Rewi M.
dc.contributor.authorLowe, David J.
dc.contributor.authorWynne, Shirley
dc.contributor.authorHazell, Zoë J.
dc.contributor.authorCaseldine, Chris
dc.date.accessioned2008-08-06T02:35:19Z
dc.date.available2008-08-06T02:35:19Z
dc.date.issued2008-02
dc.identifier.citationGehrels, M.J., Newnham, R.M., Lowe, D.J., Wynne, S., Hazell, Z.J. & Caseldine, C. (2008). Towards rapid assay of cryptotephra in peat cores: review and evaluation of selected methods. Quaternary International 178(1), 68-84en_US
dc.identifier.issn1040-6182
dc.identifier.urihttps://hdl.handle.net/10289/921
dc.description.abstractPeat bogs are highly effective archives for the preservation and detection of cryptotephra but the conventional methods used to detect these hidden, diminutive layers are destructive and can be time consuming. We briefly review methods that have been used for cryptotephra detection and evaluate the potential of a range of alternative reconnaissance methods, both non-destructive and destructive, to provide for more rapid examination of continuous cryptotephra content in peat cores. The techniques evaluated—magnetic susceptibility (MS), spectrophotometry, and X-ray fluorescence—are used to pick out compositional contrasts between tephra deposits and peat. Measurements of organic content are also evaluated as a potential guide to tephra content based on an inverse relationship. Although we find limitations to each method, particularly where deployed at the distal-most end of tephra dispersal, there is potential for all methods to be used in the detection of cryptotephra where time or material is limited. These methods can also provide additional sedimentological and stratigraphic information for studies of peat cores. However, where a reliable cryptotephra profile is required, we conclude that there is no quick or easy substitute for the conventional extraction-microscopy method.en_US
dc.language.isoen
dc.publisherElsevieren_NZ
dc.subjecttephraen_US
dc.subjectcryptotephra detectionen_US
dc.titleTowards rapid assay of cryptotephra in peat cores: review and evaluation of selected methodsen_US
dc.typeJournal Articleen_US
dc.identifier.doi10.1016/j.quaint.2006.10.014en_US
dc.relation.isPartOfQuaternary Internationalen_NZ
pubs.begin-page68en_NZ
pubs.elements-id32848
pubs.end-page84en_NZ
pubs.issue1en_NZ
pubs.volume178en_NZ


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