AndreaBozzo/ceres-open-data-index huggingface dataset:
Geochemical comparisons between asphaltites on the southern Australian margin and source rock analogues of Early Cretaceous age

Evidence for a mid-Cretaceous source for southern Australian asphaltites is presented, based on geochemical and carbon isotopic comparisons of the asphaltites with onshore source rock analogues from the Albian-Cenomanian Blue Whale Superseguence in the Bight Basin and marine oil shales from the Albian Toolebuc Formation of the Eromanga Basin. The striking similarity between the asphaltites and the Toolebuc organic matter extends across diverse geochemical signatures; from the carbon isotopes being relatively depleted in 13C compared to Anstralian oils through to the similar distribution of age-diagnostic C3o methylsteranes and C26 norsteranes. An unusual feature of the asphaltites compared to all other Australian oils, bnt shared by the Toolebnc Formation, is the presence of metalloporphyrins. These biomarkers typically indicate a relatively deep-water environment with anoxic bottom waters at the time of sonrce rock deposition. In contrast, the dominantly marine organic matter in the sample from Eyre-1 shows a pronounced ten?estrial plant input consistent with a shallow marine depositional environment. This is snpported by the well location near the depositional edge of the Blue Whale Superseguence. Fnrthermore, comparison of the organic matter generated from the artificial pyrolysis of the polar fractions from the asphaltite and the Toolebuc bitumen supports their strong genetic link.
Although the mid-Cretaceous is the most likely source for the asphaltites in the sonthern margin, the presence of a similar marine organic facies in the Late Cretaceous Tiger Superseguence cannot be excluded. Obviously, fnrther work on local and global analogues, as well as exploration success in the Great Australian Bight, would help to refine the source rock age and location for the asphaltites.

Article prepared for the Eastern Australian Basins Symposium in 2001.

Tags: Conference Paper, Earth Sciences, External Publication, Published_External, Published_Internal, marine
Organization: Australian Ocean Data Network
RV Investigator Voyage IN2023_V06 Plankton Imaging Dataset

This dataset comprises plankton images collected during the Marine National Facility (MNF) RV Investigator voyage IN2023_V06, titled “Understanding Eddy Interactions and Their Impacts in the East Australian Current System.” The voyage took place between October 9 and November 2, 2023 (AEST), departing from Sydney and returning to Sydney.

Images were generated from water samples collected using Niskin bottles and processed with a PlanktoScope imaging system. The resulting dataset, hosted on the EcoTaxa platform, contains high-resolution images of planktonic organisms along with associated metadata, supporting applications in taxonomic classification, biodiversity assessment, and ecological research.

Data collection was undertaken by Dr. Alice Della Penna and Dr. Alexandre Lheriau-Nice under the leadership of Chief Scientist Prof. Moninya Roughan. This research was supported by a grant of sea time on R/V Investigator from the CSIRO Marine National Facility. 

This is a dynamic, “living” dataset undergoing ongoing validation and expansion. Current efforts focus on improving classification accuracy, particularly within the Radiozoa group where inconsistencies have been identified. The number of available images will increase as validation progresses. Users are encouraged to report errors and to contact the data contributors when planning to use the dataset, as validation priorities may be adjusted based on research needs.

Organization: Australian Ocean Data Network
Will Australia fulfil the promise of the Paleozoic?

The recent success of the shale gas industry based on the Paleozoic sequences of North America has prompted a serious reconsideration of the petroleum potential of Australia's onshore basins. From 2010 to 2012 there was a near doubling of the onshore basin area under exploration license and several major international companies have joined local explorers in their endeavours to unlock the potential of Australian Lower Paleozoic and Proterozoic petroleum systems. Australia's geological history has created a great diversity of petroleum systems (Bradshaw, et al. 2012) including a number of Lower Paleozoic and Proterozoic systems. Some of the most oil-prone source rocks are Cambrian and Ordovician marine shales deposited in warm, shallow seas that traversed Australia when it was located in equatorial latitudes within Gondwana. Since 1984, oil has been produced from the Ordovician section of the Amadeus Basin in central Australia, and oil shows have been reported from the Ordovician of the Canning and Arafura basins and the Cambrian of the Georgina and Officer basins. The Canning Basin also has proven oil source rocks of Late Devonian age deposited in tropical marine environments. But despite wide spread excellent source rocks, less than one per cent of Australia's crude oil has been produced from Lower Paleozoic systems. Hydrocarbon charge is considered to be the element of the petroleum system most liable to fail. Some areas of Lower Paleozoic basins were never buried deeply enough to have generated hydrocarbons and where hydrocarbons were expelled preservation of accumulations remains a significant uncertainty due to the adverse impact of the Late Paleozoic Alice Springs Orogeny. Reservoir quality is also an issue for those conventional accumulations that have been preserved intact. Technological advances such as horizontal drilling and hydraulic fracturing now offer the opportunity to develop hydrocarbon resources in poor quality reservoirs or those still retained within source rocks. When discussing Australia's potential petroleum provinces of the 21st Century, Longley et al. (2001) focused on the offshore Mesozoic rifted margins and only included a short section entitled 'the promise of the Paleozoic'. History has shown that extensive areas of organic-rich rocks have encouraged exploration in Lower Paleozoic onshore basins over several decades but with little reward. Maturation history and preservation are seen as the major risks. However, the unconventional revolution has prompted a revision of this thinking. Evidence will be presented suggesting that the 'promise of the Paleozoic' in Australia may still yet be fulfilled.

Tags: Earth Sciences, GA Publication, Published_External
Organization: Australian Ocean Data Network
Petrel Sub-basin Marine Survey (GA-0335 / SOL5463) (NLECI Program)/Seabed Geochemistry/Inorganic Elements

The Petrel Sub-basin Marine Environmental Survey GA-0335, (SOL5463) was undertaken using the RV Solander during May 2012, as part of the Commonwealth Government's National Low Emission Coal Initiative (NLECI).  The survey was undertaken as a collaboration between the Australian Institute of Marine Science (AIMS) and GA. The purpose was to acquire geophysical and biophysical data on shallow (less then 100m water depth) seabed environments within two targeted areas in the Petrel Sub-basin to support investigation for CO2 storage potential in these areas. This data-set comprises inorganic element data from surface seabed sediments (~0-2 cm) in the Timor Sea.

Tags: CO2 capture, Data Package, Earth Sciences, NT, Published_External, geochemistry, marine, marine environmental baselines, marine survey, seabed
Organization: Australian Ocean Data Network
National Gravity Compilation 2019 DGIR tilt image

Gravity data measure small changes in gravity due to changes in the density of rocks beneath the Earth's surface. The data collected are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose. This National Gravity Compilation 2019 DGIR tilt image is produced from the 2019 Australian National Gravity Grids A series. These gravity data were acquired under the project No. 202008. The grid has a cell size of 0.00417 degrees (approximately 435m). The %%MV_DATASETS/SURVEY_NAME% are derived from ground observations stored in the Australian National Gravity Database (ANGD) as at September 2019, supplemented by offshore data sourced from v28.1 of the Global Gravity grid developed using data from the Scripps Institution of Oceanography, the National Oceanic and Atmospheric Administration (NOAA), and National Geospatial-Intelligence Agency (NGA) at Scripps Institution of Oceanography, University of California San Diego. Out of the approximately 1.8 million gravity observations, nearly 1.4 million gravity stations in the ANGD together with marine data were used to generate this grid. The ground gravity data used in the national grid has been acquired by the Commonwealth, State and Territory Governments, the mining and exploration industry, universities and research organisations from the 1940's to the present day. Station spacing for ground observations varies from approximately 11 km down to less than 1 km, with major parts of the continent having station spacing between 2.5 and 7 km. The DGIR was obtained by subtracting 3 quantities (i.e., the near-field isostatic correction, the far-field isostatic correction, and a first order trend correction) from Complete Bouguer Anomaly data (CBA) of the 2019 Australian National Gravity Grids A series. The image shows a tilt of the de-trended global isostatic residual (DGIR) anomalies (A series) over Australia and its continental margins. A tilt filter was calculated by applying a fast Fourier transform (FFT) process to the DGIR grid of the 2019 Australian National Gravity Grids A series. A tilt filter is a ratio of the vertical derivative to the total horizontal derivative and is used for detection of edges of geological units.

Tags: A series, Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, None, Published_External, de-trended, geophysical survey, geophysics, grav, gravity, ground digital data, image, isostatic, marine data, raster, residual, satellite data, survey 202008, tilt
Organization: Australian Ocean Data Network
Research Cruise Proposal : Light Hydrocarbon Geochemistry of the Bass, Otway, Stansbury and Gippsland Basins, and Torquay Sub-basin, Southeastern Australia : Project 9131.20

The measurement of the concentrations and molecular compositions of light hydrocarbon gases within the water column overlying offshore sedimentary basins can provide, under suitable circumstances, significant information on hydrocarbon source rock maturity and/or type, and the most likely locations for petroleum accumulation within basins. These measurements are usually made using a hydrocarbon 'sniffer', which comprises a submersible fish which is towed near the seafloor, and from which water is pumped to the surface and continuously analysed via gas chromatography. Compared with overseas, relatively few 'sniffer' surveys have been carried out around Australia, and hence the applicability and usefullness of this technique to the Australian situation is as yet undetermined.

As a continuation of its geochemical research program, the Division of Marine Geosciences and Petroleum Geology (Australian Bureau of Mineral Resources) will conduct a co-operative geochemical research survey withTransglobal Exploration and Geoscience (TEG) of Leucadia, California, USA, in southeastern Australia between February 1 and March 2, 1989. The cruise will be of 30 days duration and will involve work in the Gippsland, Bass, Otway and Stansbury Basins and the Torquay Sub-basin. A detailed proprietary program will be carried out in the Bass and Stansbury Basins in co-operation with Amoco Production Company. Two regional lines will be run from the Torquay Sub-basin, across the Cape Otway-King Island High, to the Crayfish Platform in the west of the Otway Basin (see Fig. 2). Regional lines will also be run in the Gippsland Basin, with an additional detailed program over several known oil and/or gas accumulations. In addition to the water column geochemistry, a limited sampling program will investigate the light hydrocarbon geochemistry of sediments over known oil and gas fieldsin the Gippsland Basin.

Tags: Earth Sciences, GA Publication, Published_External, Record, geochemistry, marine, petroleum exploration
Organization: Australian Ocean Data Network
Constructing geologically-constrained 3D models using 3D Geomodeller: An example from the Paterson Orogen

The Paterson National Geoscience Agreement project is using a number of tools to better understand the time-space evolution of the northwest Paterson Orogen in Western Australia. One of these tools, 3D Geomodeller, is an emerging technology that constructs three-dimensional (3D) volumetric models based on a range of geological information. The Paterson project is using 3D Geomodeller to build geologically-constrained 3D models for the northwest Paterson Orogen. This report documents the model building capability and benefits of 3D Geomodeller and highlights some of the geological insights gained from the model building exercise. The principal benefit of 3D Geomodeller is that it provides geoscientists with a rapid tool for testing multiple working hypotheses.

The Cottesloe Syncline district was selected as the focus for a trial of the 3D Geomodeller software. The 3D model was built by members of the Paterson Project, as well as model building specialists within Geoscience Australia.  The resultant Cottesloe Syncline model including two dimensional sections, maps and images was exported from 3D GeoModeller and transformed into a Virtual Reality Modelling Language (VRML), enabling a wide audience to view the model using readily available software.

Tags: AU-WA, Earth Sciences, Published_External, Report, geology, geophysics, marine, model
Organization: Australian Ocean Data Network
NSW Marine Habitats 2002

An environmental classification developed in conjunction with the NSW Marine Parks Authority Research Committee. For more information see: Breen D.A. and R.P. Avery. (2002). Broad-scale biodiversity assessment of the Manning Shelf marine bioregion. Draft final report for the NSW Marine Parks Authority. Copies of the report may be borrowed from the library: Environment Australia, GPO Box 787, Canberra ACT 2601 Australia.

This coverage is intended for use in regional level marine conservation assessment. It was prepared using very low cost techniques (ie. unrectified API) and should not be relied upon for navigation purposes.

This represents an historic dataset providing transparency on the 2002 marine park systematic planning process. This product is one of three related datasets used in the assessment process: "NSW Ocean Ecosystems 2002", "NSW Estuarine Ecosystems 2002" &amp; "NSW Marine Habitats 2002"



This record describes the environmental classification of nine habitat surrogates (mangrove, seagrass, saltmarsh, subtidal sediment, beach, intertidal rocky shore, subtidal reef and island). The full study also describes classes for each of the five major estuary ecosystems, and the four ocean ecosystems classified by depth.

Tags: Benthic habitat, Benthic physical habitat, biota, environment, oceans
Organization: Australian Ocean Data Network
U-series data for the Pelorus Island from Roff et al (2013) Palaeoecological evidence of a historical collapse of corals at Pelorus Island, inshore Great Barrier Reef, following European settlement. (NERP TE 1.3, UQ)

This dataset is the U-series data for Pelorus Island as described in Roff et al (2013) Palaeoecological evidence of a historical collapse of corals at Pelorus Island, inshore Great Barrier Reef, following European settlement. Proceedings of the Royal Society Series B 10.1098/rspb.2012.2100

Methods:

We surveyed three leeward reef sites at Pelorus Island (figure 1). At each site, four belt transects (1 m width, 20 m length) were surveyed on SCUBA at 4–6 m depth. Surficial death assemblages were collected by hand on SCUBA at eight points (n = ?40 fragments per point) at random across a single 20 m transect at each site. From these collections, fragments of the dominant genus/growth form present in death assemblages were identified, and samples were selected for U-series dating haphazardly (i.e. with no bias for taphonomic state of fragments). Sample fragments were sectioned laterally, and a sub-sample (2–3 g) of skeleton was taken from the cleanest section (i.e. unaffected by internal bioerosion) in closest proximity to the growth margin. Approximately 1 g of carefully cleaned material from each sub-sample was used for thermal ionization mass spectrometry (TIMS) and multi-collector inductively coupled plasma mass spectrometer (MC-ICPMS) U-series dating (Roff et al 2013 for more information)

Format of the data:

The dataset comprises of U-Th data obtained using thermal ionisation mass spectrometry (TIMS) and multi-collector inductively coupled plasma mass spectrometry (MC ICP-MS). Data is presented in a table in a word file () with values for uranium concentration (U ppm), 232Th concentration (ppb), measured 230Th/232Th (activity ratio), 230Th/238U (activity ratio), ?234U (activity ratio), uncorrected and corrected 230Th age (in years), time of chemistry (years AD) and corrected 230Th age (years AD).

References:

Roff et al (2013) Palaeoecological evidence of a historical collapse of corals at Pelorus Island, inshore Great Barrier Reef, following European settlement. Proceedings of the Royal Society Series B 10.1098/rspb.2012.2100

Data Location:

This dataset is filed in the eAtlas enduring data repository at: data\NERP-TE\1.3_Coral-cores

Tags: marine
Organization: Australian Ocean Data Network
Persistence of glyphosate in seawater. Glyphosate concentrations recorded over time in standard flask experiment 2013. (NERP TE 4.2, AIMS and UQ)

This dataset shows the concentrations of the herbicide glyphosate remaining over time in a simulation flask persistence experiment conducted in 2013.

Glyphosate degradation experiments were carried out in flasks according to the OECD methods for ‘‘simulation tests’’. The tests used natural coastal seawater and were carried out in the incubator shakers under 3 conditions: (1) 25°C in the dark, (2) 31°C in the dark and (3) 25°C in the light.  The light levels were ~40 µE on a 12:12 light:dark cycle and the flasks shaken at 100 rpm for up to 330 days.

Water samples were taken periodically and analysed by high performance liquid chromatography-mass spectrometry (HPLC-MS/MS).

Reductions in the concentration of Glyphosate were plotted to predict the persistence of this herbicide (its “half-life”). 

The emergence of AMPA, a breakdown product of Glyphosate, was also quantified.

The experiment and its results are described in full detail in:
P. Mercurio, F. Flores, J. F. Muller, S. Carter, A. P. Negri AP (2014), Glyphosate persistence in seawater. Marine Pollution Bulletin http://dx.doi.org/10.1016/j.marpolbul.2014.01.021

Data Format:

The data consists of a CSV file containing the results of the 3 treatments.  All concentrations in µg/L
D25 = Dark 25 degrees celcius
D31 = Dark 31 degrees celcius
L25 = Light 25 degrees celcius 
Uncertainty in the analytical method for repeated inejctions into the LC-MS results in a concentration uncertainty of approximately  ± 0.2 µg/L

Tags: marine
Organization: Australian Ocean Data Network
IMOS - Satellite Remote Sensing - Surface Waves Sub-Facility - SAR wave - Near real-time data

Sentinel-1 A, B and C satellites are part of Europe’s Copernicus Earth Observation program and carry identical C-band Synthetic Aperture Radar (SAR) instruments. Over open-ocean, they operate in wave mode and collect directional wave measurements globally. This dataset contains Sentinel-1 SAR directional ocean swell wave number spectra, spectral partitions and partition bulks in the Australasian region including the Pacific islands, this mission has flown since 2014, with data delivered from July 2015. The data have been homogenised to a single, easily usable format from inconsistent source product by removing various discrepancies such as inconsistencies in wave number bins and values, variables and erroneous measurements over land.

The data represented by this record, are presented in real-time.

Tags: Global / Oceans | World, Oceans | Ocean Waves | Swells
Organization: Australian Ocean Data Network
IND343 - Healthcheck: Adaptive management

Metric: Presence/absence of explicit provisions for adaptive management in the governance arrangements, e.g. measures for adaptability/elasticity in order to respond to crises (e.g. public heath) or a need for change in total allowable take/effort.

Indicates whether management arrangements can be adjusted in response to changing conditions or unexpected events.

Tags: Effectiveness, Governance
Organization: Australian Ocean Data Network
Sydney Harbour Bathymetry 1997 (2376/19970009S)

The Sydney Harbour Area Survey was conducted by Sydney University aboard the Motor Vessel (M/V) Hydrographer between 18 and 27 November 1997. Data were acquired using an Atlas Fansweep 20 (200 kHz) multibeam echosounder. Not to be used for navigational purposes

Tags: AusSeabed, Bathymetry, Coral Sea, EARTH SCIENCES, MV Hydrographer, Marine, Published_External, multi-beam echosounders
Organization: Australian Ocean Data Network
2022 Aerial survey data of southern right whales (Eubalaena australis) off southern Australia (NESP MaC 2.7)

Aerial surveys of southern right whales (Eubalaena australis) were undertaken off the southern Australian coast to monitor the recovery of this endangered species following extreme 19th and 20th Century commercial whaling. The aerial survey was undertaken in the coastal waters from Perth (Western Australia) to Ceduna (South Australia) between the 12th and 19th August 2022, to maintain the annual series of surveys and inform the long-term population trend. The survey resulted in a total 526 whales sighted, consisting of 247 cow-calf pairs, 31 unaccompanied adults and 1 yearling. The ‘western’ population of southern right whales in Australian waters is increasing in size (~5.3% per year based on female/calf pairs and a population estimate of 2675 whales) based on the long-term population trend data from the annual aerial surveys. This represents the majority of the Australian population given the very low numbers in the ‘eastern’ population. The 2022 surveys recorded the lowest number of unaccompanied animals (i.e. males and females without a calf) ever throughout the time-series of the annual aerial surveys since 1993 when survey coverage between Cape Leeuwin and Ceduna first began. Across this time series, there is a particularly notable decline in sightings of unaccompanied animals over the past five years. It is currently unclear what factors account for the decline in these sightings or may influence the variation in numbers of unaccompanied animals on the southern Australian coast. Lower than expected counts in the long-term data may provide evidence of a slowing population growth rate, which can only be assessed by continued annual population surveys to assess population trend data.

Tags: Areal survey, Eubalaena australis, National Environmental Science Program (NESP) Marine and Coastal Hub, Southern right whale
Organization: Australian Ocean Data Network
IND217 - Healthcheck: Investment in RD&E

Metric: Average annual RD&amp;E investment in innovation in seafood production business models for the fishery (e.g. sea ranching, stock enhancement, multiple systems offshore, etc) ($AUD).

Measures how much is invested each year in research, development, and innovation to improve seafood production and business practices.

Tags: Economic, Fishery participants
Organization: Australian Ocean Data Network