AndreaBozzo/ceres-open-data-index huggingface dataset:
Geomorphic features of the Antarctic margin and Southern Ocean 2012

Publicly available bathymetry and geophysical data has been used to map geomorphic features of the Antarctic continental margin and adjoining ocean basins at scales of 1:1-2 million. The key bathymetry datasets used were GEBCO08 and ETOPO2 satellite bathymetry (Smith &amp; Sandwell 1997), in addition to seismic lines in key areas. Twenty-seven geomorphic units were identified based on interpretation of the seafloor bathymetry with polygons digitised by hand in ArcGIS. Seafloor features were classified largely based on the International Hydrographic Organisation (2001) classification of undersea features, and expanded to include additional features, including those likely to have specific substrate types and influence on oceanography. This approach improves the technique as a predictor of physical conditions that may influence seafloor communities. The geomorphic map has been used for developing a benthic bioregionalisation and for developing a representative system of Marine Protected Areas for East Antarctica. 
Slight modifications have been made since original publication in O'Brien et al. 2009 and Post et al. 2014. These include:
- updating of some feature names;
- combining "wave affected banks" with "shelf banks"
- Combining "coastal terrance" with "island coastal terrane" as "Coastal/Shelf Terrane"
- replacing canyon vectors with polygons by using a buffer around the vectors
Further details of the original mapping can be found in: 
O'Brien, P.E., Post, A.L., Romeyn, R., 2009. Antarctic-wide geomorphology as an aid to habitat mapping and locating Vulnerable Marine Ecosystems, Commission for the Conservation of Antarctic Marine Living Resources Vulnerable Marine Ecosystems Workshop, Paper WS-VME-09/10. CCAMLR, La Jolla, California, USA.
Post, A.L., Meijers, A.J.S., Fraser, A.D., Meiners, K.M., Ayers, J., Bindoff, N.L., Griffiths, H.J., Van de Putte, A.P., O'Brien, P.E., Swadling, K.M., Raymond, B., 2014. Chapter 14. Environmental Setting, In: De Broyer, C., Koubbi, P., Griffiths, H.J., Raymond, B., d'Udekem d'Acoz, C., et al. (Eds.), Biogeographic Atlas of the Southern Ocean. Scientific Committee on Antarctic Research, Cambridge, pp. 46-64.

Tags: Geomorphology and Regolith and Landscape Evolution, Published_External, geomorphology, habitat mapping, seafloor
Organization: Australian Ocean Data Network
Australian Marine Physical Environmental Data - Descriptions and Metadata

This report provides detailed metadata for the 37 marine physical environmental variables that were collated or specifically generated by the Marine Biodiversity Hub, which is part of the Commonwealth Environment Research Facilities Program. The work was done at Geoscience Australia and the Marine and Atmospheric Division of CSIRO. The data are required for use in the Hub's surrogacy and predictive modelling research. Bathymetry, geomorphology, seabed sediment and seabed exposure data were produced by Geoscience Australia. Bottom-water and surface-water parameters were produced by CSIRO. For each variable there is a general description, comprehensive metadata and a distribution map. All data were transformed to a common datum, WGS84, and converted to a grid with a cell size of 0.01 degrees. The metadata reports conform to ANZLIC standards.

The data fall into five categories:
1. Bathymetry and geomorphology, derived from the 250 m resolution National Bathymetry Grid at Geoscience Australia;
2. Seabed sediments, derived from the MARS database at Geoscience Australia;
3. Seabed exposure, produced from the output of a seabed shear stress model, GEOMACS, at Geoscience Australia;
4. Bottom-water nutrients and temperature, extracted from the CARS database at CSIRO;
5. Surface-water parameters, derived from satellite images at CSIRO.

Tags: AU, Earth Sciences, GA Publication, Published_External, Record, continental shelf, marine, marine jurisdiction, marine zone, metadata
Organization: Australian Ocean Data Network
Glacial-interglacial paleoceanography from Australian margin sediments: northwest Australian margin and Great Australian Bight

The Australian Geological Survey Organisation has collected cores from two areas of the Australian continental margin- the Exmouth Plateau and Perth Basin (EP/PB) in the southeastern Indian Ocean off western Australia, and the Ceduna Terrace (CT) in the Great Australian Bight Data from seven EP/PB cores provide evidence of glacial- interglacial changes in surface ocean productivity in this region.  Sediment accumulation rates and the accumulation rates of biogenic sediment components (CaCO3 and organic carbon) during the last glacial maximum (LGM, roughly 20,000 years ago) were 1.5- 2 times higher than during the Holocene. Likewise, benthic foraminiferal abundances and accumulation rates are higher in glacial sediments, as is the concentration of authigenic uranium.  These data all suggest that the glacial productivity off Western Australia was elevated relative to Holocene values. Benthic foraminiferal stable isotope data from the EP/PB cores and from seven CT cores provide records of changes in intermediate and deep water chemistry in these regions since the LGM. Reconstructed LGM 13C profiles show that the deep southeastern Indian Ocean did not experience the strong glacial 13C depletion observed in the deep north Indian Ocean and in the Indian sector of the Southern Ocean.

Tags: Earth Sciences, GA Publication, Journal, Published_External, marine
Organization: Australian Ocean Data Network
AGSO Journal vol.14 no. 1

Content:
1.Chaproniere GCH, Pigram CJ. Miocene to Pleistocene foraminiferal biostratigraphy of dredge samples from the Marion Plateau, offshore Queensland, Australia.
2.Scott DL. Architecture of the Queensland Trough: implications for the structure and tectonics of the northeastern Australia margin.
3.Wilkie J, Gibson G, Wesson V. Application and extension of the ML earthquake magnitude scale in the Victoria region.
4.Macphail MK, Kellett JR, Rexilius JP, O'Rorke ME. The "Geera Clay equivalent": a regressive marine unit in the Renmark Group that sheds new light on the age of the Mologa weathering surface in the Murray Basin. 
5.Nicoll RS, Laurie JR, Roche MT. Revised stratigraphy of the Ordovician (Late Tremadoc-Arenig) Prices Creek Group and Devonian Poulton Formation, Lennard Shelf, Canning Basin, Western Australia.
6.Cruikshank BI, Hoatson DM, Pyke JG. A stream-sediment geochemical orientation survey of the Davenport Province, Northern Territory.
7.

Tags: Earth Sciences, GA Publication, Journal, Published_External
Organization: Australian Ocean Data Network
Relative fall of Holocene sea level and coastal progradation, northeastern Spencer Gulf, South Australia

The levels of intertidal environments of prograding Holocene coastal complexes of northeast Spencer Gulf have been precisely measured and their relation with the tidal range determined. Beach ridges and the top of subtidal Posidonia sea-grass deposits are the best indicators of relative sea level. Bases of active beach ridges range from + 1.1 m to + 1.8 m A.H.D. (Australian Height Datum) and the upper limit of Posidonia growth is &lt;-2 m A.H.D. The elevation of old preserved examples of these facies has been established along transects across intertidal and supratidal plains. 14C dating has been carried out on unaltered mollusc shells recovered from beach ridges and the base of the regressive intertidal facies above the subtidal sea-grass facies. Sea-grass root fibres and shell hash from the top of the buried subtidal facies have also been dated. A Holocene sea-level history has been constructed for north-east Spencer Gulf, and shows the following events: 6000- 4000 years B.P. - probable construction of a shingle ridge at + 3-4 m at the peak of the Holocene transgression, followed by about 1 m fall of sea level, but little progradation, owing to low rates of carbonate production; 4000-3000 years B.P. - formation of regressive carbonate shorelines with fall of relative sea level from about +2 m to about + 1.5 m, and the construction of beach ridges; 3000-2000 years B.P. - no beach ridge construction along surveyed transects, but continued progradation of shorelines with a further 1.0 m fall in relative sea level; 2000 years B.P. to Present - construction of beach ridges accompanied shore-line progradation, and a fall in relative sea level of 0.5-1.0 m. A contributing cause of relative movement of sea level in the region may be continuing tectonic uplift, as evidenced by the high seismicity of the adjacent Flinders Ranges.

Tags: Earth Sciences, GA Publication, Journal, Published_External, SA, marine
Organization: Australian Ocean Data Network
BRUVS (TM) - Fish and Benthic survey of Southern Great Barrier Reef Marine Park Seabed Project Cruise 4 2004-09-07 to 2004-10-10

The dataset comprises 13558 individuals from 169 species of fishes, sharks, rays and sea snakes observed at around Southern Great Barrier Reef Marine Park Seabed Project Cruise 4 using 229 baited remote underwater video stations (BRUVS(TM)). 1879 images were captured from these cameras.

Approximately 3500 of the best images from all BRUVS (TM) projects are stored in a reference library.

Data recorded concern:
- classification of the habitat in the field of view (topography, sediments, benthos)
- the identity of fish and CAABCODES
- their time of arrival
- their behaviour (8 categories, including feeding on the bait)
- their maturity (adult or juvenile)
- their relative abundance (as MaxN = the maximum number visible at one time, or distinguishable at different times as separate individuals e.g. much larger/smaller, male/female)
- the time elapsed before MaxN and feeding occurs.

A custom interface has been developed by AIMS staff, using Microsoft Access, for reading and analysis of BRUVS(TM) tapes.

Organization: Australian Ocean Data Network
Submarine valleys on the Ceduna Terrace off South Australia

A detailed bathymetric map has been compiled for the Ceduna Terrace, off South Australia. The most striking features of the bathymetry are numerous submarine valleys, which dissect the otherwise gently sloping terrace. These are mostly broad and shallow, and form a dendritic tributary system feeding submarine canyons on the lower slope. The valleys were probably eroded by turbidity currents generated near the shelf-break during low sea-level stands. There is little evidence to suggest that they have resulted from mass movement and slumping or from subaerial erosion. Most valleys appear to have developed during the Quaternary, but some may have originated in the Tertiary.

Tags: Earth Sciences, GA Publication, Journal, Published_External, SA, marine
Organization: Australian Ocean Data Network
Oldest Cretaceous sequence, Giralia Anticline, Carnarvon Basin, Western Australia: late Hauterivian-Barremian

Outcrop of the oldest Cretaceous sequence in the Giralia Anticline and the Giralia No. 1 well, penetrating the same sequence, are described and biostratigraphically assessed in detail.  The Cretaceous rocks lie on an erosion surface cut into Permian strata. A 10 m thick basal sand unit, the Birdrong Sandstone, is overlain by 56 m of carbonaceous siltstone-mudstone (Muderong Shale). The Birdrong Sandstone in the anticline belongs to the Muderongia australis Zone of late Hauterivian-Barremian age, as does the lower part of the Muderong Shale. The age of the upper Muderong Shale is uncertain, as is the age of a 10 m thick sandstone unit (probable Windalia Sand Member) which separates the Muderong Shale from the late Aptian Windalia Radiolarite. Abundant fossil conifer wood, much of it with Teredolites borings, is present in outcrop referred to the upper part of the Birdrong Sandstone. Scattered ichthyosauran bones, probable plesiosauran remains, and rare ammonites also are present at this level. A growth-ring analysis of the wood suggests that a seasonal humid meso thermal climate prevailed in the region. Changes in sediment composition, palynomorph assemblages, and foraminiferal biofacies reflect retrogradation of marine facies during deposition of the Birdrong Sandstone and lowermost Muderong Shale, followed by aggradation through most of the Muderong Shale with maximum water depths less than 50 m.  Within the sequence, the Birdrong Sandstone and the lowermost Muderong Shale represent a transgressive systems tract, whereas most of the Muderong Shale belongs to a highstand systems tract. The sequence reflects a transgressive pulse that was part of the progressive submergence of vast areas of the Australian continent during the Early Cretaceous. This late Hauterivian-Barremian transgressive pulse is recognised in widely separated basins and may represent a synchronous continent-wide sea-level rise.

Tags: Earth Sciences, GA Publication, Journal, Published_External, WA
Organization: Australian Ocean Data Network
Australia's Maritime Jurisdiction off the Australian Antarctic Territory (Centre)

Map showing Australia's Maritime Jurisdiction off the central portion of the Australian Antarctic Territory.
One of the 27 constituent maps of the "Australia's Maritime Jurisdiction Map Series" (GeoCat 71789).
Depicting Australia's extended continental shelf approved by the Commission on the Limits of the Continental Shelf in April 2008 and various maritime zones.  Background bathymetric image is derived from a  grid by Smith and Sandwell, 1997.  Background land imagery derived from Blue Marble, NASA's Earth Observatory.
A0 sized .pdf downloadable from the web.

Tags: AQ, Administrative Boundary, Earth Sciences, Published_External, Thematic Map, administrative boundaries, bathymetry, continental shelf, marine jurisdiction
Organization: Australian Ocean Data Network
Australia’s Future Energy Resources (AFER) Project - Regional Geology of the Pedirka and western Eromanga basins

As part of the Exploring For The Future (EFTF) program, the Australia’s Future Energy Resources (AFER) project has investigated the potential of energy resource commodities in the Pedirka/western Eromanga basins region targeting conventional and unconventional hydrocarbons as well as evaluating the suitability of sedimentary sections to store carbon dioxide.

The interpretation of new biostratigraphic and reprocessed seismic data provided new insights into the regional geology of this previously explored region. The Permian, Triassic and Jurassic depositional history of the study area is largely recorded by extensive fluvial-lacustrine sediments, including changes from braided to meandering river systems and sustained periods of flood-plain environments in which thick sequences of coal-bearing strata developed. During the Cretaceous, expanding shallow marine environments were established in the western part of the Pedirka/western Eromanga region.

Age-control obtained from palynological analysis and the mapping of key seismic horizons yielded an improved understanding of the extent and character of unconformities which define breaks and changes in depositional processes. Results from new regional stratigraphic correlations initiated a comprehensive review of previously established basin definitions in the greater Pedirka/western Eromanga area. 

While confirming the stacked nature of these basins which hold sedimentary records from the early Paleozoic to the Late Cretaceous, changes to stratigraphic basin boundaries have been applied to more correctly reflect the impact of unconformity related depositional breaks. As a result, the Lower and Middle Triassic Walkandi Formation is now assigned to the upper section of the Pedirka Basin, while the Upper Triassic Peera Peera Formation represents commencement of deposition in the western Eromanga Basin, thereby abandoning the recognition of the Simpson Basin as a separate Triassic depocenter.&nbsp;





Tags: Australia’s Future Energy Resources, Chronostratigraphy, EFTF – Exploring for the Future, Energy Resource Assessment Module, Pedirka Basin, Published_External, Stratigraphy, Stratigraphy (incl. biostratigraphy, sequence stratigraphy and basin analysis), structural architecture, western Eromanga Basin
Organization: Australian Ocean Data Network
Extent and persistence of photic zone euxinia in Late Devonian seas – insights from the Canning Basin and implications for petroleum source rock formation

Late Devonian mass extinctions attributed to extensive anoxia and/or euxinia of the oceans are associated with widespread deposition of organic-rich shales. Also in the epeiric waters of the Canning Basin (Western Australia), photic zone euxinia (PZE) prevailed during the Givetian–Frasnian, with geochemical evidence for PZE on the northern (Lennard Shelf)–, and southern (Barbwire Terrace) margins of the Fitzroy Trough. On the Lennard Shelf, shales record episodic pulses of PZE associated with high algal activity due to enhanced nutrient supply, whereas a restricted marine setting on the Barbwire Terrace is thought to be the main driver for the development of persistent PZE and associated bacterial predominance. Structural evidence indicates that the Fitzroy Trough was a confined basin during the Late Devonian with the possibility of limited ocean circulation. Widespread PZE is expected to have developed in the poorly mixed water column, if the basin received sufficient nutrient supply for enhanced primary production.

Notwithstanding the presence of anoxia during deposition of potential source rocks, only two small Devonian-sourced oil fields and numerous oil shows have been found in the Canning Basin. Biomarker assemblages show that the oils produced from the Lennard Shelf fields (i.e. Blina-1, Blina-4 and Janpam North-1) have substantially different molecular compositions to the minor oil recovered from Mirbelia-1 on the Barbwire Terrace. A correlation was established between the Lennard Shelf oils and rock extracts from the Gogo Formation at Blina-1 and McWhae Ridge-1 based on their hopane, sterane and carotenoids abundances. A definitive source correlation was not obtained for the Mirbelia-1 oil, but it did show some genetic affinity to the Givetian–Frasnian extracts from the Barbwire Terrace, suggesting that local source rocks are developed in the region.

Citation: Gemma Spaak, Dianne S. Edwards, Heidi J. Allen, Hendrik Grotheer, Roger E. Summons, Marco J.L. Coolen, Kliti Grice, Extent and persistence of photic zone euxinia in Middle–Late Devonian seas – Insights from the Canning Basin and implications for petroleum source rock formation, Marine and Petroleum Geology, Volume 93, 2018, Pages 33-56, ISSN 0264-8172, https://doi.org/10.1016/j.marpetgeo.2018.02.033.

Tags: Biomarkers, Canning Basin, Chlorobiaceae, EARTH SCIENCES, Published_External, middle-late Devonian, oil-source rock correlations, photic zone euxinia
Organization: Australian Ocean Data Network
Scientific reports published by Marine and Coastal Environment Group 2008-2010

This is a compilation of Seabed and Habitat Mapping Publications 2008 - 2010:

GA Record 2008_20.pdf       Vlaming Sub-Basin and Mentelle Basin: Environmental Summary
GA Record 2008_23.pdf       A Review of Spatial Interpolation Methods for Environmental Scientists
GA Record 2009_02.pdf       Carnarvon Shelf Survey Post-Survey Report
GA Record 2009_09.pdf       Ceduna Sub-basin: Environmental Summary
GA Record 2009_10.pdf       Mapping and characterising soft sediment habitats, and evaluating physical variables as surrogates of biodiversity in Jervis Bay, NSW
GA Record 2009_12.pdf       Temporal and fine-scale variation in the biogeochemistry of Jervis Bay
GA Record 2009_13.pdf       Review of Ten Key Ecological Features (KEFs) in the Northwest Marine Region
GA Record 2009_22.pdf       Seabed Environments and Subsurface Geology of the Capel and Faust basins and Gifford Guyot,Eastern Australia
GA Record 2009_26.pdf       Deep Sea Lebensspuren: Biological Features on the Seafloor of the Eastern and Western Australian Margin
GA Record 2009_38.pdf       Frontier basins of the west Australian continental margin: post-survey report of marine reconnaissance and geological sampling survey GA2476
GA Record 2009_42.pdf       A Review of Surrogates for Marine Benthic Biodiversity
GA Record 2009_43.pdf       Southeast Tasmania Temperate Reef Survey Post-Survey Report
GA Record 2010_09.pdf       Seabed Environments of the Eastern Joseph Bonaparte Gulf, Northern Australia

Tags: AU-EEZ, Earth Sciences, GA Publication, Other Publication, Published_External, marine, seabed
Organization: Australian Ocean Data Network
Bathymetric Expression of the Fitzroy River Palaeochannel: Implications for Sediment Transport on the Semi-rimmed Southern Great Barrier Reef, Australia

We report the presence of a prominent bathymetric expression of the Fitzroy River palaeochannel on the continental shelf of the southern Great Barrier Reef (GBR), Australia. The Fitzroy River, and the Burdekin River are the two largest point sources of terrigenous sediment to the GBR, which represents the worlds largest tropical mixed siliciclastic-carbonate sedimentary province. The Fitzroy River palaeochannel differs from that of the previously discovered Burdekin palaeochannel in that it has not yet been buried by sediments. Evidently, the dominance of platform reef rather than barrier reef geomorphology, coupled with macrotidal oceanographic conditions has limited aggradation behind the shelf edge, as postulated for the Burdekin region. Contrary to current models for the central GBR which suggest that slope sedimentation is limited to periods of transgression, the palaeo-Fitzroy probably contributed sediment directly to the continental slope of the southern GBR throughout the lowstand. Additionally, it appears that during the highstand, accumulation of terrigenous sediment on the middle and outer shelf has been minimal. The southern GBR represents a transition between the mainly terrigenous wave and ocean current dominated shelf of southeastern Australia, and the mixed siliciclastic-carbonate storm-influenced shelf of the GBR. The discovery of the Fitzroy River palaeochannel in the southern GBR physiographic setting provides new data by which the response of major rivers to sea level change can be characterised.

Tags: AU-QLD, Earth Sciences, External Publication, Published_External, Scientific Journal Paper, bathymetry, continental shelf, marine, seabed
Organization: Australian Ocean Data Network
Geophysical Surveys and Datasets WFS

This web service delivers the geographical extents and descriptive metadata of geophysical datasets from all surveys conducted or managed by Geoscience Australia and its predecessor agencies, as well as from State and Territory geological survey agencies. Datasets include gravity, magnetic, radiometric, and electromagnetic data, and elevation data collected during geophysical surveys.

Tags: Published_External, WFS, electromagnetic, elevation, gravity, magnetic, radiometric, survey, web service
Organization: Australian Ocean Data Network