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Zinc/silicon ratios of sponges: A proxy for carbon export to the seafloor

Ellwood, Michael; Kelly, Michelle; Nodder, Scott D; Carter, Lionel


Reconstruction of past carbon export events is difficult. Most proxies for carbon export suffer from problems related to remineralisation and diagenetic effects above, at and below the sediment-water interface. Here we demonstrate that deepsea hexactinellid sponges incorporate zinc (Zn) into their silica skeletons in a direct relationship with the amount of particulate organic carbon (POC) accumulating in sediments. Such a relationship suggests that Zn incorporation into siliceous sponge...[Show more]

CollectionsANU Research Publications
Date published: 2004
Type: Journal article
Source: Geophysical Research Letters
DOI: 10.1029/2004GL019648


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