This dataset contains point data describing physical properties of marine sediments as held within the Geoscience Australia Marine Sediment database (MARS) for samples acquired by marine surveys that occurred between 1905 and 2017. Samples were collected from within the Australian Exclusive Economic Zone, plus waters within Australian Antarctic Territory, waters around Christmas Island (Indian Ocean) and outside the EEZ within the Timor Sea and waters around Papua New Guinea. Samples are sourced from a range of organisations, with sampling technique, spatial accuracy and sample preservation varying between surveys. Attributes include survey ID and name, sample ID, sampling method, water depth and location information. Sediment properties include %mud, %sand, %gravel, mean grain size and texture (classified using the Folk (1954) nomenclature for sediments). There is no consistent datum and projection due to the time span, differing collecting organisations and method of measurement across the dataset. All data is referenced to WGS 84 unless stated otherwise.

This dataset contains point data describing physical properties of marine sediments as held within the Geoscience Australia Marine Sediment database (MARS) for samples acquired by marine surveys that occurred between 1905 and 2017. Samples were collected from within the Australian Exclusive Economic Zone, plus waters within Australian Antarctic Territory, waters around Christmas Island (Indian Ocean) and outside the EEZ within the Timor Sea and waters around Papua New Guinea. Samples are sourced from a range of organisations, with sampling technique, spatial accuracy and sample preservation varying between surveys. Attributes include survey ID and name, sample ID, sampling method, water depth and location information. Sediment properties include %mud, %sand, %gravel, mean grain size and texture (classified using the Folk (1954) nomenclature for sediments). There is no consistent datum and projection due to the time span, differing collecting organisations and method of measurement across the dataset. All data is referenced to WGS 84 unless stated otherwise.

This dataset contains point data describing physical properties of marine sediments as held within the Geoscience Australia Marine Sediment database (MARS) for samples acquired by marine surveys that occurred between 1905 and 2017. Samples were collected from within the Australian Exclusive Economic Zone, plus waters within Australian Antarctic Territory, waters around Christmas Island (Indian Ocean) and outside the EEZ within the Timor Sea and waters around Papua New Guinea. Samples are sourced from a range of organisations, with sampling technique, spatial accuracy and sample preservation varying between surveys. Attributes include survey ID and name, sample ID, sampling method, water depth and location information. Sediment properties include %mud, %sand, %gravel, mean grain size and texture (classified using the Folk (1954) nomenclature for sediments). There is no consistent datum and projection due to the time span, differing collecting organisations and method of measurement across the dataset. All data is referenced to WGS 84 unless stated otherwise.

This dataset contains point data describing physical properties of marine sediments as held within the Geoscience Australia Marine Sediment database (MARS) for samples acquired by marine surveys that occurred between 1905 and 2017. Samples were collected from within the Australian Exclusive Economic Zone, plus waters within Australian Antarctic Territory, waters around Christmas Island (Indian Ocean) and outside the EEZ within the Timor Sea and waters around Papua New Guinea. Samples are sourced from a range of organisations, with sampling technique, spatial accuracy and sample preservation varying between surveys. Attributes include survey ID and name, sample ID, sampling method, water depth and location information. Sediment properties include %mud, %sand, %gravel, mean grain size and texture (classified using the Folk (1954) nomenclature for sediments). There is no consistent datum and projection due to the time span, differing collecting organisations and method of measurement across the dataset. All data is referenced to WGS 84 unless stated otherwise.

This dataset contains point data describing physical properties of marine sediments as held within the Geoscience Australia Marine Sediment database (MARS) for samples acquired by marine surveys that occurred between 1905 and 2017. Samples were collected from within the Australian Exclusive Economic Zone, plus waters within Australian Antarctic Territory, waters around Christmas Island (Indian Ocean) and outside the EEZ within the Timor Sea and waters around Papua New Guinea. Samples are sourced from a range of organisations, with sampling technique, spatial accuracy and sample preservation varying between surveys. Attributes include survey ID and name, sample ID, sampling method, water depth and location information. Sediment properties include %mud, %sand, %gravel, mean grain size and texture (classified using the Folk (1954) nomenclature for sediments). There is no consistent datum and projection due to the time span, differing collecting organisations and method of measurement across the dataset. All data is referenced to WGS 84 unless stated otherwise.

Geoscience Australia maintains a national collection of marine geological samples and analytical data from across the Australian region. Digital records of these datasets are held within the Marine Sediment Database (MARS), available as an online resource of c. 2.6 million entries. Here we have extracted data from MARS to collate sediment properties for over 15,000 seabed samples for use as a standalone dataset. Analytical data includes textural composition (mud, sand, gravel), summary statistics for particle size distributions, textural class and calcium carbonate values (where available). Information on sample water depth, location and marine survey is also provided. The sample set spans the coast, continental shelf, slope and deep ocean locations across the Australian marine region (covering the extent of the AusBathyTopo 250m 2023 grid). This dataset has utility for a broad range of purposes including seabed characterisation, sediment transport modelling, habitat characterisation, seabed engineering studies and fundamental geological and sedimentological research. Additional metadata of this dataset are provided in the word document accompanied with the dataset. The metadata document describes the attribute table, the sediment carbonate classification and the sediment facies.

Geoscience Australia maintains a national collection of marine geological samples and analytical data from across the Australian region. Digital records of these datasets are held within the Marine Sediment Database (MARS), available as an online resource of c. 2.6 million entries. Here we have extracted data from MARS to collate sediment properties for over 15,000 seabed samples for use as a standalone dataset. Analytical data includes textural composition (mud, sand, gravel), summary statistics for particle size distributions, textural class and calcium carbonate values (where available). Information on sample water depth, location and marine survey is also provided. The sample set spans the coast, continental shelf, slope and deep ocean locations across the Australian marine region (covering the extent of the AusBathyTopo 250m 2023 grid). This dataset has utility for a broad range of purposes including seabed characterisation, sediment transport modelling, habitat characterisation, seabed engineering studies and fundamental geological and sedimentological research. Additional metadata of this dataset are provided in the word document accompanied with the dataset. The metadata document describes the attribute table, the sediment carbonate classification and the sediment facies.

Geoscience Australia maintains a national collection of marine geological samples and analytical data from across the Australian region. Digital records of these datasets are held within the Marine Sediment Database (MARS), available as an online resource of c. 2.6 million entries. Here we have extracted data from MARS to collate sediment properties for over 15,000 seabed samples for use as a standalone dataset. Analytical data includes textural composition (mud, sand, gravel), summary statistics for particle size distributions, textural class and calcium carbonate values (where available). Information on sample water depth, location and marine survey is also provided. The sample set spans the coast, continental shelf, slope and deep ocean locations across the Australian marine region (covering the extent of the AusBathyTopo 250m 2023 grid). This dataset has utility for a broad range of purposes including seabed characterisation, sediment transport modelling, habitat characterisation, seabed engineering studies and fundamental geological and sedimentological research. Additional metadata of this dataset are provided in the word document accompanied with the dataset. The metadata document describes the attribute table, the sediment carbonate classification and the sediment facies.

Geoscience Australia maintains a national collection of marine geological samples and analytical data from across the Australian region. Digital records of these datasets are held within the Marine Sediment Database (MARS), available as an online resource of c. 2.6 million entries. Here we have extracted data from MARS to collate sediment properties for over 15,000 seabed samples for use as a standalone dataset. Analytical data includes textural composition (mud, sand, gravel), summary statistics for particle size distributions, textural class and calcium carbonate values (where available). Information on sample water depth, location and marine survey is also provided. The sample set spans the coast, continental shelf, slope and deep ocean locations across the Australian marine region (covering the extent of the AusBathyTopo 250m 2023 grid). This dataset has utility for a broad range of purposes including seabed characterisation, sediment transport modelling, habitat characterisation, seabed engineering studies and fundamental geological and sedimentological research. Additional metadata of this dataset are provided in the word document accompanied with the dataset. The metadata document describes the attribute table, the sediment carbonate classification and the sediment facies.

The dataset provides the spatially continuous data of the seabed gravel content (sediment fraction >2000 µm) expressed as a weight percentage ranging from 0 to 100%, presented in 0.01 decimal degree resolution raster format. The dataset covers the Australian continental EEZ, including seabed surrounding Tasmania. It does not include areas surrounding Macquarie Island, and the Australian Territories of Norfolk Island, Christmas Island, and Cocos (Keeling) Islands or Australia's marine jurisdiction off of the Territory of Heard and McDonald Islands and the Australian Antarctic Territory. This dataset supersedes previous predictions of sediment gravel content for the Australian Margin with demonstrated improvements in accuracy. Accuracy of predictions varies based on density of underlying data and level of seabed complexity. Artefacts occur in this dataset as a result of insufficient samples in relevant regions. This dataset is intended for use at national and regional scales. The dataset may not be appropriate for use at local scales in areas where sample density is insufficient to detect local variation in sediment properties. To obtain the most accurate interpretation of sediment distribution in these areas, it is recommended that additional samples be collected and interpolations updated.