Monosulfidic black ooze accumulations in sediments of the Geographe Bay area, Western Australia

N. J. Ward, R. T. Bush, E. D. Burton, S. Appleyard, S. Wong, L. A. Sullivan, P. J. Cheeseman

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Mobilisation of sedimentary monosulfidic black ooze (MBO) may result in rapid deoxygenation and acidification of surface waters, and release of potentially toxic metals. This study examines the extent and nature of MBO accumulation in the Geographe Bay area, Western Australia. MBO accumulations were found to be widespread in benthic sediments of the Geographe Bay area with acid-volatile sulfide (AVS) contents as high as 320μmolg-1. The MBO materials often had unusually high dissolved sulfide (S-II) concentrations in their pore-waters (up to 610mgL-1) and elevated elemental sulfur (S0) contents (up to 51μmolg-1). Dissolved S-II is able to accumulate due to limited iron availability and S0 is largely its partial oxidation product. The availability of organic carbon and Fe limited MBO accumulation at many sites. A comparison of AVS and simultaneously extracted metal (SEM) concentrations has shown that metals are likely to be bound in sulfide complexes.

Original languageEnglish
Pages (from-to)2130-2136
Number of pages7
JournalMarine Pollution Bulletin
Volume60
Issue number11
DOIs
Publication statusPublished - 2010
Externally publishedYes

Fingerprint

ooze
sulfides
Western Australia
Sediments
metals
sediments
sulfide
sediment
acidification
sulfur
surface water
Metals
Availability
oxidation
iron
Acids
Acidification
carbon
Organic carbon
Surface waters

Cite this

Ward, N. J. ; Bush, R. T. ; Burton, E. D. ; Appleyard, S. ; Wong, S. ; Sullivan, L. A. ; Cheeseman, P. J. / Monosulfidic black ooze accumulations in sediments of the Geographe Bay area, Western Australia. In: Marine Pollution Bulletin. 2010 ; Vol. 60, No. 11. pp. 2130-2136.
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Monosulfidic black ooze accumulations in sediments of the Geographe Bay area, Western Australia. / Ward, N. J.; Bush, R. T.; Burton, E. D.; Appleyard, S.; Wong, S.; Sullivan, L. A.; Cheeseman, P. J.

In: Marine Pollution Bulletin, Vol. 60, No. 11, 2010, p. 2130-2136.

Research output: Contribution to journalArticle

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AU - Bush, R. T.

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AU - Cheeseman, P. J.

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