Diagenesis of magnetic minerals at the Southwest Pacific DSDP Site 277

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dc.contributor.authorOhneiser, C.
dc.contributor.authorTapia Orellana, Claudio
dc.date2020
dc.date.accessioned2021-04-30T16:34:20Z
dc.date.available2021-04-30T16:34:20Z
dc.description.abstractWe present a paleomagnetic and rock magnetic record from a 465.2 m long drill core recovered at DSDP Site 277 in the Southwest Pacific. Our study sought to construct a magnetostratigraphy and thus enable further paleoenvironmental work on this sedimentary succession. Magnetic remanence measurements revealed a stable magnetisation in the upper 34.8 m and lower 58.7 m of the core. However, between 34.8 and 397.5 m sediments are very weakly magnetised, do not carry a stable magnetisation, and rock magnetic analyses revealed a lack of remanence carrying minerals in this interval. We suggest that during the period spanning Paleocene to Oligocene sufficiently high organic matter (reagents) accumulation resulted in complete reduction and dissolution of ferri/ferromagnetic grains.
dc.identifier.citationNEW ZEALAND JOURNAL OF GEOLOGY AND GEOPHYSICS,Vol.63,250-261,2020
dc.identifier.doi10.1080/00288306.2019.1665075
dc.identifier.urihttp://repositoriodigital.uct.cl/handle/10925/3054
dc.language.isoen
dc.publisherTAYLOR & FRANCIS LTD
dc.sourceNEW ZEALAND JOURNAL OF GEOLOGY AND GEOPHYSICS
dc.subject.englishDSDP Site 277
dc.subject.englishpaleomagnetism
dc.subject.englishdiagenesis
dc.subject.englishOligocene
dc.subject.englishPaleocene
dc.titleDiagenesis of magnetic minerals at the Southwest Pacific DSDP Site 277
dc.typeArticle
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