AndreaBozzo/ceres-open-data-index huggingface dataset:
Incorporation of Organic Contaminants in Geochemical Samples and an Assessment of Potential Sources Samples: Examples from Geoscience Australia's Marine Survey S282

Organic geochemists are increasingly involved in multi-disciplinary collaborative studies but not often in the initial sample collection phase, so understanding the origin and source of contaminants derived from sample handling and containers is of vital importance as standard laboratory blanks cannot assess this contamination. A variety of organic contaminants was detected in different sediments collected during Geoscience Australia marine survey S282. These include fatty acid amides, chemical antioxidants such as butylated hydroxytoluene and octadecyl-3, 5-di-tert-butyl-4-hydroxyhydrocinnamate (Irganox 1076), plus the UV absorbers octabenzone and octyl methoxycinnamate. These compounds were introduced during sampling on board the research vessel or during subsequent handling. Solvent extraction of potential contamination sources identified two brands of plastic sampling bags as the main source for the fatty acid amides, butylated hydroxytoluene and Irganox 1076. Direct contact of samples with hands covered with sunscreen appears to have caused contamination by octabenzone and octyl methoxycinnamate. As the primary aim of the survey was to detect evidence for hydrocarbon seepage in the Arafura Sea, care was also taken to identify potential sources of hydrocarbons that might have been introduced during sampling and storage. Detailed examination of solvent extracts from plastic bags revealed the occurrence of several homologous series of branched alkanes with quaternary carbon atoms (BAQCs), as well as distributions of alkyl cyclohexanes and alkyl cyclopentanes with strong even over odd carbon predominance. These compounds were also found in sediment samples collected during the survey. Other potential sources of contamination used on board the ship, such as PVC core liners and lubricants, yielded hydrocarbons that could easily be mistaken for evidence of naturally occurring petroleum if care is not taken during interpretation.

Tags: Earth Sciences, External Publication, Published_External, geochemistry, marine, marine survey, organic geochemistry
Organization: Geoscience Australia Data
Water Modelling-Stochastic Climate Data-Greater Sydney-Silo Station (x of xi) ID 070001-070100

The stochastic climate data include 10,000 replicates of 130-yr daily data sets of rainfall and potential evapotranspiration generated using observed data sets without and with combined climate data. This work has been undertaken by researchers at the University of Newcastle and used in modelling for Greater Sydney Water Strategy.

This particular Asset (070001-070100) houses Silo Station IDs:
<ul>
<li>070002 - BANNABY (HILLASMOUNT)</li>
<li>070012 - BUNGONIA (INVERARY PARK)</li>
<li>070016 - CAPTAINS FLAT (FOXLOW ST)</li>
<li>070036 - LAKE BATHURST (SOMERTON)</li>
<li>070040 - GOULBURN (CHERRYTON)</li>
<li>070057 - BRAIDWOOD (KRAWARREE)</li>
<li>070060 - LOWER BORO (CALDERWOOD)</li>
<li>070061 - MAJORS CREEK (THE OLD SCHOOL)</li>
<li>070063 - MARULAN (GEORGE ST)</li>
<li>070071 - GOULBURN (POMEROY)</li>
<li>070077 - GOULBURN (SPRINGFIELD)</li>
<li>070080 - TARALGA POST OFFICE</li>
</ul>



Note: If you would like to ask a question, make any suggestions, or tell us how you are using this dataset, please visit the <a href="https://water-hub.seed.nsw.gov.au/thread/search">NSW Water Hub which has an online forum</a> you can join.

Tags: Climate Change perturbed, Climate Data, DCCEEW - Water, DCCEEW - Water Analytics, Observed Climate, Stochastic Climate, Water-Modelling, modelling
Organization: NSW Department of Climate Change, Energy, the Environment and Water
NSW Marine LiDAR Topo-Bathy 2018 Geotif

Remotely sensed topographic (elevation) and bathymetric (depth) information were acquired for the NSW coast (Point Danger to Cape Howe) and southern Queensland (Palm Beach to Point Danger) using Airborne LiDAR Bathymetry (ALB - a combination of Light Detection And Ranging (LiDAR) and Laser Airborne Depth Sounding (LADS) sensors) during July – December 2018. Data were acquired by Fugro Pty Ltd on behalf of NSW Office of Environment and Heritage using a Riegl VQ-820-G ALB (LiDAR) and Fugro LADS High-Definition sensors aboard sub-contracted Corporate Air Cessna C441 (VH-VEH). Funding was provided through the NSW Coastal Reforms package. The objective of the project was to provide high-resolution data better than 3-5 m spaced soundings (0.5 m spot spacing terrestrial; 3.4 m spot spacing marine) from the mean high-water mark to ~200m inland, and from the shore, seaward (LADS - bathymetry) to the point of laser extinction (~20-40m water depth depending on in-water conditions). Positioning data were collected on the ellipsoid ITRF 2014 GRS80 in UTM Z56 and post-processed using local base stations (CORSnet NSW) to provide a Post Processed Kinematic GNSS solution for final aircraft trajectory before being applied to all data.  The final data Geotif products are provided on the <em><a href="https://elevation.fsdf.org.au">Geosciences Australia ELVIS website</a> .They are combined gridded terrestrial (elevation) and subtidal marine (bathymetry) data at 5 x 5 m  (horizontal resolution) Geotifs exported using ESRI ArcMap from rasters (weighted average of clean soundings) in GDA 2020 (horizontal datum) to Australian Height Datum (vertical datum) and vertical precision to International Hydrographic Order (IHO) 1B. Data covers an area of 6862 km2 provided in 48 sub-datasets the extents of which are generally defined in their alongshore extent by the boundaries of NSW Secondary Sediment Compartments (Geosciences Australia). Other data outputs will include raw and classified LAS format files, aerial imagery and raw seabed reflectance data to be made available shortly on the ELVIS website. Data packages containing Arc Grids (topo-bathy, contours), XYZ, KMZ, tif, pdf maps and Fledermaus SD files will be made publicly available via the AODN (</em><a href="https://portal.aodn.org.au/">Australian Ocean Data network</a>).
Metadata, data quality statements and a geographical data coverage ArcGIS shapefile are available via <a href="https://datasets.seed.nsw.gov.au/dataset">SEED</a>. The data are intended to inform coastal and marine management and should not be used for navigation without additional processing. 

Tags: LADS, LiDAR, OEH, Seabed habitats, geomorphometry, habitat mapping, sediments
Organization: NSW Department of Climate Change, Energy, the Environment and Water
Permian Productacea of Western Australia

The brachiopod super-family Productacea is represented in the Permian faunas of Western Australia by at least 34 species, many of which occur in at least two of the three major areas of marine Permian sediments. These areas, from north to south, are the Canning Basin, the Carnarvon Basin, and the Irwin Basin, together an area of approximately 150,000 square miles. The Permian succession in each of these basins begins with glacial sediments and is followed by a variety of sediments, marine and non-marine, with a total thickness of over 12,000 feet in the Carnarvon Basin. The marine formations are often richly fossiliferous, containing abundant remains of the Productacea. Study of the Western Australian material has enabled discussion of certain features, the function and taxonomic value of which are imperfectly understood. Important amongst these are the shell structure, attachment scar, musculature, trail, and the living position of the shell. The collection studied consisted of well over three thousand specimens, most of them well preserved. There are seven species of Aulosteges; the genus Dictyoclostus is represented by three species; the genus Krotovia (emended) by four species; the genus Linoproductus by three species; the genus Marginifera by one species; the genus Waagenoconcha by one species. Taeniothaerus, an Indo-Pacific genus, is represented by seven species, one of doubtful affinities. In the subfamily Strophalosiinae, Etheridgina, is represented by one species; Strophalosia by three species, one of them very doubtfully represented, and its subgenus Heteralosia by five species, one of these being doubtfully represented.

Tags: AU-WA, Bulletin, Earth Sciences, GA Publication, Published_External, palaeontology
Organization: Geoscience Australia Data
AAS2201 Antarctic Multibeam Survey 2010

From February to March 2010, Geoscience Australia (GA) conducted an multibeam survey of the coastal waters of the Vestfold Hills in the Australian Antarctic Territory. The survey was conducted jointly with Australian Antarctic Division (AAD) and the Deployable Geospatial Survey Team (DGST) of the Royal Australian Navy. The survey was aimed primarily at understanding the the character of the sea floora round Davis to better inform studies of the benthic biota and the possible impacts of the Davis Station sewage outfall. DGST were involved so the data could be used to update and extend the nautical charts of the Davis area.

Tags: Earth Sciences, HVC_144640, Multimedia, Published_External, marine
Organization: Geoscience Australia Data
Deep Sea Lebensspuren: Biological Features on the Seafloor of the Eastern and Western Australian Margin

Much of the deep sea encompasses soft-sediment plains, with very few hard substrates for invertebrates to colonise. At first glance, these habitats seem barren, but they are actually teeming with life. Compared to organisms from shallow water, many animals here are quite small. In addition, most of the animals are infaunal, meaning they live within the sediment. During feeding and burrowing, these animals form a range of features called lebensspuren, defined as any type of sedimentary structure produced by a living organism. Sampling deep sea animals can be a challenge, and traditional methods of grabs and boxcores provide only a single snapshot of a small area to characterise broad regions. Underwater imagery facilitates the characterisation of biological communities over a larger area, but the quantification of biodiversity from video is often restricted to larger epifauna, thus reducing its utility to measure biodiversity in deep sea soft sediments where animals are often small or infaunal. High resolution still images provide an interesting avenue with which to quantify biological activity based on lebensspuren.

In this study, we used thousands of still images taken along the edge of the Eastern and Western margins of Australia to identify and characterise deep-sea lebensppuren. The features identified were compiled into a Lebensspuren Directory (Section 7), and the data was used to correlate abiotic factors to lebensspuren and to valuate whether the quantification of lebensspuren from still photographs is an appropriate technique for broadly quantifying biological activity and diversity in the deep sea (Sections 2 - 6).

Tags: AU-WA, Earth Sciences, GA Publication, Published_External, Record, marine, seabed
Organization: Geoscience Australia Data
Lord Howe Rise Marine Seismic Survey 2016 (GA-0354/ KR1605) Bathymetry grids

This dataset contains bathymetry products from the Lord Howe Rise 2D Seismic Survey undertaken by Geoscience Australia (GA) and the Japan Agency for Marine-Earth Science and Technology (JAMSTEC) during the period from 17 March to 16 May 2016 onboard the RV Kairei (Survey KR1605). The Lord Howe Rise (LHR) is a submerged plateau that extends from southwest New Caledonia to the west of New Zealand. Much of the LHR lies within the Australian marine jurisdiction at water depths of 1000-3000m. The Commonwealth conducted a scientific seismic survey over the Lord Howe Rise in 2016 in collaboration with JAMSTEC. This collaboration contributes to a larger research proposal submitted to the International Ocean Discovery Program (IODP) that would provide the first deep stratigraphic record for the Cretaceous Eastern Gondwana Margin. The IODP proposal, if funded, is to drill a deep stratigraphic well to a depth of 2-3 km below the seabed, possibly in 2020. In order to select the drill sites, GA and JAMSTEC are conducting site assessments that involve a seismic survey in 2016 and a geotechnical survey in 2017. Multibeam bathymetry data were acquired during the survey covering an area of 62,360 km2. Eight bathymetry grids of 50 to 80m resolution were produced using the shipborne 12 KHz sonar system.

This dataset is not to be used for navigational purposes.

Tags: AusSeabed, Bathymetry, Earth Sciences, HVC_144641, Multibeam, Published_External, coral sea, marine
Organization: Geoscience Australia Data
Clarence-Moreton Basin hydrogeological inventory

This Clarence-Moreton Basin dataset contains descriptive attribute information for the areas bounded by the relevant spatial groundwater feature in the associated Hydrogeology Index map. Descriptive topics are grouped into the following themes: Location and administration; Demographics; Physical geography; Surface water; Geology; Hydrogeology; Groundwater; Groundwater management and use; Environment; Land use and industry types; and Scientific stimulus.

The formation of the Clarence-Moreton Basin initiated during the Middle Triassic due to tectonic extension. This was followed by a prolonged period of thermal cooling and relaxation throughout the Late Triassic to the Cretaceous. Deposition of a non-marine sedimentary succession occurred during this time, with the Clarence-Moreton Basin now estimated to contain a sedimentary thickness of up to 4000 m. There were three main depositional centres within the basin, and these are known as the Cecil Plain Sub-basin, Laidley Sub-basin and Logan Sub-basin.

The Clarence-Moreton Basin sediments were originally deposited in non-marine environments by predominantly northward flowing rivers in a relatively humid climate. The sedimentary sequences are dominated by a mixed assemblage of sandstone, siltstone, mudstone, conglomerate and coal. Changing environmental conditions due to various tectonic events resulted in deposition of interbedded sequences of fluvial, paludal (swamp) and lacustrine deposits.

Within the Clarence-Moreton Basin, coal has been mined primarily from the Jurassic Walloon Coal Measures, including for the existing mines at Commodore and New Acland. However, coal deposits also occur in other units, such as the Grafton Formation, Orara Formation, Bundamba Group, Ipswich Coal Measures, and Nymboida Coal Measures.

Overlying the Clarence-Moreton Basin in various locations are Paleogene and Neogene volcanic rocks, such as the Main Range Volcanics and Lamington Volcanics. The thickness of these volcanic rocks is typically several hundred metres, although the maximum thickness of the Main Range Volcanics is about 900 m. Quaternary sediments including alluvial, colluvial and coastal deposits also occur in places above the older rocks of the Clarence-Moreton Basin.

Tags: Basin Analysis, EARTH SCIENCES, ECOLOGY, ENVIRONMENTAL SCIENCES, Environmental Management, Exploring for the Future, GEOLOGY, Groundwater, Hydrogeology, Land Use and Environmental Planning, National Groundwater Sytems, National Hydrogeological Inventory, PHYSICAL GEOGRAPHY AND ENVIRONMENTAL GEOSCIENCE, Published_External, Sedimentology, Stratigraphy (incl. Biostratigraphy and Sequence Stratigraphy)
Organization: Geoscience Australia Data
Biophysical Processes in the Torres Strait Marine Ecosystem - Post Cruise Report

This report contains the preliminary results of Geoscience Australia survey 266 to central Torres Strait. The survey was undertaken to investigate the seabed geomorphology and sedimentary processes in the vicinity of Turnagain Island and to infer the possible effects (if any) on the distribution, abundance and survival of seagrasses. The Turnagain Island region was chosen because it is a known site of recent widespread seagrass dieback. The present survey is the first of two by Geoscience Australia to be carried out in 2004 and is part of a larger field-based program managed by the Reef CRC aimed at identifying and quantifying the principal physical and biological processes operating in Torres Strait. The impetus for the program is the threat of widespread seagrass dieback and its effects on local dugong and turtle populations and the implications for indigenous islander communities.

Tags: AU-QLD, Earth Sciences, GA Publication, Published_External, Record, bathymetry, geomorphology, marine, marine survey, resource management
Organization: Geoscience Australia Data
Palynostratigraphy of the central west Murray Basin

Palynological analyses have been undertaken on four fully cored boreholes in the central west Murray Basin (Woodlands-1, Manilla-I, Piangil West-2 and Hatfield-1 holes) to provide a biostratigraphic framework for geological factors related to groundwater.  Three of these boreholes penetrated the marine sequence of the Geera Clay and its associated facies, which acts as an aquitard confining groundwater flow within the aquifers of the Renmark Group. This study has been augmented by analysis of cores and cuttings from boreholes in the areas east of the main marine influence, and by reference to previously studied sequences at Oakvale-1, on the western margin of the basin.  Early Cretaceous sediments of non-marine character are present at Manilla-1 and at Mitfords Corner in the Wentworth Trough.  Within the Cainozoic sequence, application of zonal schemes modified from those developed in the Gippsland Basin shows that aquifers in the lower partof the Renmark Group can be assigned to the Middle and Upper Nothofagidites asperus Zones, of mid-Eocene to earliest Oligocene age. They contain dinoflagellates which suggest that the effects of the marine incursion reflected by the Buccleuch Beds in the southwest of the Murray Basin were probably felt over a much wider area of the basin than hitherto believed.  The Geera Clay and its associated facies were deposited during the interval of time represented by the Proteacidites tuberculatus and Triporopollenites bellus Zones or parts thereof, during the Late Oligocene and Early to Middle Miocene.  Resolution of the palynological zones is too poor to identify pulses of marine transgression with those represented on the global sea-level curve; phases of onlap including TB1.4 and TB2.3 (22 Ma and 16 Ma) may both be represented. There is a strong likelihood of condensed sequences in this interval.  Pollen assemblages from the Murray Basin contain a number of taxa, many of them with affinities to modern tropical plant species or groups which are unknown in other southeastern Australian basins. Many of these are of potential stratigraphic value.  Broad scale shifts in vegetation, presumably in response to climatic change, are discernible in the Late Oligocene to earliest Miocene over much of the basin. There is a suggestion that the initiation of this shift, which reflects a change from year-round to seasonal rainfall patterns, was diachronous for west to east, but patterns of change in space and time are complex, so the correlative value of changes in pollen frequencies remains limited.

Tags: Earth Sciences, GA Publication, Journal, NSW, Published_External, VIC
Organization: Geoscience Australia Data
Diagenesis of Jurassic and Lower Cretaceous sandstones of the Eromanga Basin in New South Wales

The Jurassic and Lower Cretaceous sandstones of the Eromanga Basin in New South Wales can be divided into quartzose and volcanolithic petrofacies. The latter comprises sandstones of the Cadna-owie and Wallumbilla Formations which are predominantly volcanic-orogen-sourced lacustrine-to-paralic and shallow-marine deposits; the quartzose petrofacies comprises the craton-sourced fluvial Hooray Sandstone, the correlative fluvial and lacustrine Mooga Formation, and subordinate basal and other intercalated phases of the overlying Cadna-owie Formation. The diagenetic overprints in the sandstones include physical compaction, clay infiltration, cementation, and the dissolution and replacement of labile grains. The authigenic minerals in the chemically reactive volcanolithic sandstones are, in temporal order of appearance: syndepositional-glauconie, pyrite, sporadic carbonate, smectite (including nontronite, smectite and mixed-layers mectite/chlorite), zeolite (heulandite and mordenite), and kaolinite ; and in the chemically stable quartzose sandstones, the authigenic minerals are, in order of appearance: quartz (phase I), sporadic carbonate, accessory chlorite, and quartz (phase II) and kaolinite. Cutans of mechanically infiltrated clay and/or thin authigenic chlorite grain-coatings constitute early diagenetic overprints in the quartzose sandstones of the Hooray Sandstone/ Mooga Formation and the Cadna-owie Formation, and thereby minimised subsequent reduction of the substantial primary porosity of these rocks by precluding pervasive quartz-vergrowth cementation. The present-day excellent aquifer function of these quartzose sandstones is due largely to this circumstance, perhaps augmented by a history of geochemical pore-fluid conditions that were generally unfavourable for the volumetrically large-scale precipitation of either silica or carbonate.  The volcanolithic sandstones average 35 % core porosity and 125 md permeability. Micropores constitute the predominant pore-type in these rocks and, where macropores are present, they comprise both isolated primary intergranular and secondary grain-dissolution pores, the origin of the latter likely being related to the interaction between labile sand grains and pore-fluid derived in part from intercalated organic-rich mudrocks. The quartzose sandstone has 29% (mean) core porosity and 676 md (mean) permeability; and the pore-types are mainly primary intergranular pores, and accessory intragranular grain-dissolution pores (mostly within feldspar grains). The development of the secondary-dissolution pores in the quartzose sandstone manifests the influence of meteoric (artesian) water and is a late diagenetic event. The distribution patterns of porosity- permeability of the lithic and quartzose sandstones correlate well with the respective depositional environments of these rocks as manifested by their bulk lithofacies characteristics.

Tags: Earth Sciences, GA Publication, Journal, NSW, Published_External, QLD
Organization: Geoscience Australia Data
5028 Block 2 (Southeast) Grid of Total Magnetic Intensity (TMI) with standard reductions applied

Total magnetic intensity (TMI) data measures variations in the intensity of the Earth's magnetic field caused by the contrasting content of rock-forming minerals in the Earth crust. Magnetic anomalies can be either positive (field stronger than normal) or negative (field weaker) depending on the susceptibility of the rock. The data 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 5028 Block 2 (Southeast) Grid of Total Magnetic Intensity (TMI) with standard reductions applied has a cell size of  degrees (approximately 20m). The units are in nanoTesla (or nT). The data used to produce this grid was acquired in 2024 by the WA Government, and consisted of 415090 line-kilometres of data at 100m line spacing and 50m terrain clearance.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, Published_External, TMI, WA, airborne digital data, geophysical survey, geophysics, grid, mag, magnetics, magnetism, palaeomagnetism, raster, survey 5028, total magnetic intensity
Organization: Geoscience Australia Data