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Seafloor environments of the northern Lord Howe Rise, Eastern Australia: Mineralogy of seabed sediments.

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Created 20/01/2025

Updated 20/01/2025

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Geoscience Australia marine reconnaissance survey TAN0713 to the Lord Howe Rise offshore eastern Australia was completed as part of the Federal Government's Offshore Energy Security Program between 7 October and 22 November 2007 using the New Zealand Government's research vessel Tangaroa. The survey was designed to sample key, deep-sea environments on the east Australian margin (a relatively poorly-studied shelf region in terms of sedimentology and benthic habitats) to better define the Capel and Faust basins, which are two major sedimentary basins beneath the Lord Howe Rise. Samples recovered on the survey contribute to a better understanding of the geology of the basins and assist with an appraisal of their petroleum potential. They also add to the inventory of baseline data on deep-sea sediments in Australia. The principal scientific objectives of the survey were to: (1) characterise the physical properties of the seabed associated with the Capel and Faust basins and Gifford Guyot; (2) investigate the geological history of the Capel and Faust basins from a geophysical and geological perspective; and (3) characterise the abiotic and biotic relationships on an offshore submerged plateau, a seamount, and locations where fluid escape features were evident. This dataset comprises mineraology data (e.g. concentrations of bulk carbonate, calcite, aragonite, halite, quartz) from seanbed sediments (0-2cm). Some relevant publications which pertain to these datasets include:

Heap, A.D., Hughes, M., Anderson, T., Nichol, S., Hashimoto, T., Daniell, J., Przeslawski, R., Payne, D., Radke, L., and Shipboard Party, (2009). Seabed Environments and Subsurface Geology of the Capel and Faust basins and Gifford Guyot, Eastern Australia - post survey report. Geoscience Australia, Record 2009/22, 166pp. Radke, L.C. Heap, A.D., Douglas, G., Nichol, S., Trafford, J., Li, J., and Przeslawski, R. 2011. A geochemical characterization of deep-sea floor sediments of the northern Lord Howe Rise. Deep Sea Research II 58: 909-921

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Title Seafloor environments of the northern Lord Howe Rise, Eastern Australia: Mineralogy of seabed sediments.
Language eng
Licence notspecified
Landing Page https://devweb.dga.links.com.au/data/dataset/0f77e7ec-4ae4-463e-b7ca-14f3db5c7508
Contact Point
Geoscience Australia
clientservices@ga.gov.au
Reference Period 22/04/2018
Geospatial Coverage {"type": "Polygon", "coordinates": [[[159.41532, -27.3448], [161.77743, -27.3448], [161.77743, -26.066], [159.41532, -26.066], [159.41532, -27.3448]]]}
Data Portal data.gov.au

Data Source

This dataset was originally found on data.gov.au "Seafloor environments of the northern Lord Howe Rise, Eastern Australia: Mineralogy of seabed sediments.". Please visit the source to access the original metadata of the dataset:
https://devweb.dga.links.com.au/data/dataset/seafloor-environments-of-the-northern-lord-howe-rise-eastern-australia-mineralogy-of-seabed-sed1

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