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Apparent magnetic polarity reversals due to remagnetization resulting from late diagenetic growth of greigite from siderite

Sagnotti, Leonardo; Roberts, Andrew; Weaver, Richard; Verosub, Kenneth; Florindo, Fabio; Pike, Christopher; Clayton, Trevor; Wilson, Gary

Description

A mixed-polarity zone, representing alternations between remagnetized and non-remagnetized strata, has been documented within the lower few metres of the CRP-1 core (Ross Sea, Antarctica). Detailed rock magnetic investigation of this interval indicates that the normal polarity remagnetization is carried by magnetostatically interacting single-domain particles of a ferri-magnetic iron sulphide mineral, while the reversed-polarity magnetization of non-remagnetized strata is carried by magnetite...[Show more]

CollectionsANU Research Publications
Date published: 2005
Type: Journal article
URI: http://hdl.handle.net/1885/24087
Source: Geophysical Journal International
DOI: 10.1111/j.1365-246X.2005.02485.x

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