AndreaBozzo/ceres-open-data-index huggingface dataset:
Sedimentological Analyses from Deepsea Cores taken off Southwest Victoria, and Western and Southern Tasmania

Since 1985 the Bureau of Mineral Resources (BMR) has been involved in three coring cruises off southwest Victoria and Tasmania. A great amount of laboratory work has been done on the cores, generally on samples taken at 20cm intervals, by technicians in BMR's Division of Marine Geosciences and Petroleum Geology, and the aim of this record is to document the results.

The analytical work has been designed to be complementary to other scientific studies on the cores: physical descriptions, smear slide descriptions, and palaeontological examinations. The aim of all the work has been to adequately describe the variations which have taken place with time in the cores, and to relate these back to regional and local changes in depositional environment. The final intention of the studies is to build up a model of sedimentation on the continental margin which, in conjunction with reflection seismic data, can be used to interpret depositional packages in much older sequences.

The first sampling cruise was carried out in early 1985, aboard the West German research vessel Sonne (S0-36C) in a co-operative venture between BGR (German Geological Survey) and BMR. This survey took 43 cores off west Tasmania and on the South Tasman Rise (Figures 1B and 2) These cores varied in length from 0.55m to 7.78m (Table 1),and full station data are given in Hinz et al. (1985). Bolton et al. (1988)described six cores from the South Tasman Rise containing ferro manganese crust and nodules. Grainsize and CaCO3 analyses for 9 Sonne cores are presented in this Record.

The second sampling cruise, BMR Cruise 67, was carried out by BMR's research vessel Rig Seismic in 1987, off southwest Victoria and western Tasmania (Figures lA and 3). This survey took 54 cores varying in length from 0.10m to 3.64m (Table 2), and full station data are given in Exon, Lee et al. (1987) and Exon, Lee et al. (1989). Grainsize and CaCO3 analyses on 35 cores carried out at BMR are reported here, as well as TOC (Total Organic Carbon %) and CaCO3 analyses from low in 15 cores carried out by AMDEL.
The third sampling cruise, BMR Cruise 78, was carried out by Rig Seismic in 1988, off western Tasmania (Figures 4 and 5). Altogether 38 core stations were occupied, of which 22 were successful. Core recovery varied from 0.02m to 7.33m (Table 3) and full station data will be given in Exon, Lee and Hill (1989). Grainsize and CaCO3 analyses from 10 cores are reported here.

Tags: AU-TAS, AU-VIC, Earth Sciences, GA Publication, Published_External, Record, marine, marine survey
Organization: Australian Ocean Data Network
AGSO Journal vol.16 no. 5

Contents:
1.Sheraton JW, Sun SS. Mafic dyke swarms of the western Musgrave Block, central Australia: their geochemistry, origin, and relationships to the Giles Complex.
2.Kinny PD, Black LP, Sheraton JW. Zircon U-Pb ages and geochemistry of igneous and metamorphic rocks in the northern Prince Charles Mountains, Antarctica.
3.Weaver L, McLoughlin S, Drinnan AN. Fossil woods from the Upper Permian Bainmedart Coal Measures, northern Prince Charles Mountains, East Antarctica.
4.Chaproniere GC, Shafik S, Coleman PJ. Biostratigraphy of Rig Seismic samples from Vening Meinesz Seamounts, Christmas Island area, northeastern Indian Ocean. 
5.Laurie JR. Early Ordovician fauna of the Gap Creek Formation, Canning Basin, Western Australia. 
6.Felton EA. A non-marine Lower Cretaceous rift-related epiclastic volcanic unit in southern Australia: the Eumeralla Formation in the Otway Basin. Part I. Lithostratigraphy and depositional environments.
7.Felton EA. A non-marine Lower Cretaceous rift-related epiclastic volcanic unit in southern Australia: the Eumeralla Formation in the Otway Basin. Part II. Fluvial systems.

Tags: Earth Sciences, GA Publication, Journal, Published_External
Organization: Australian Ocean Data Network
Seabed morphology and geomorphology of Flinders Reefs within the Coral Sea Marine Park, north-eastern Australia, Version 1 WMS

This OGC Web Map Service (WMS) contains geospatial seabed morphology and geomorphology information for Flinders Reefs within the Coral Sea Marine Park and are intended for use by marine park managers, regulators, the general public and other stakeholders. This web service uses the data product published in McNeil et al. (2023); eCat Record 147998.

Tags: Geomorphology, Geomorphology and Earth Science Processes, Mapping, Morphology, Parks Australia, Published_External, Seabed, Spatial, WMS, web service
Organization: Australian Ocean Data Network
Australia's Maritime Jurisdiction in the Coral and Tasman Seas

Map showing Australia's Maritime Jurisdiction in the Coral and Tasman Seas.
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, treaties and various maritime zones.  Background bathymetric image is derived from a combination of the 2009 9 arc second bathymetric and topographic grid by GA and 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: Administrative Boundary, Earth Sciences, Published_External, Thematic Map, administrative boundaries, bathymetry, continental shelf, marine, marine jurisdiction
Organization: Australian Ocean Data Network
Origin of Gilmore gas and oil, Adavale Basin, central Queensland

Dry gas in the Gilmore Field of the Adavale Basin has been sourced from both wet gas associated with oil generation, together with methane from a deep, overmature source. The latter gas input is further characterised by a high nitrogen content co-generated with isotopically heavy methane and carbon dioxide. The eastern margin of the Lissoy Sandstone principal reservoir unit contains the higher content of overmature dry gas supporting reservoir compartmentalisation and a more favourable migration pathway to this region. The combination of a molecular and multi-element isotopic approach is an effective tool for the recognition of an overmature, dry gas source. This deep source represents a play concept that previously has been undervalued and may be more widespread within Australian sedimentary basins.

The maturity level of the wet gas and associated oil are identical, having reached an equivalent vitrinite reflectance of 1.4-1.6 per cent. Modelling studies support the concept of local Devonian source rocks for the wet gas and oil. Reservoir filling from late stage, high maturity oil and gas generation and expulsion, was a result of reactivation of petroleum generation from Devonian source rocks during the Early Cretaceous. The large input of dry gas from a deeper and highly overmature source is a more recent event. This gas can fractionally displace condensable C2+ liquids already in the reservoir possibly allowing tertiary migration into younger reservoirs, or adjacent structures.

Oil recovered from Gilmore-2 has been sourced from Devonian marine organic matter, deposited under mildly evaporitic, restricted marine conditions. The most likely source rocks in the Adavale Basin are the basal marine shale of the Log Creek Formation, algal shales at the top of the Lissoy Sandstone, and the Cooladdi Dolomite. Source -sensitive biomarkers and carbon isotope composition of the Gilmore-2 oil have much in common with other Devonian-sourced oils from the Bonaparte and Canning basins. The chemical link between western and eastern Australian Devonian oils may suggest diachronous development of source rocks over a wide extent. This implies that the source element of the Devonian Petroleum Supersystem may be present in other sedimentary basins.



Citation: Boreham C.J., &amp; de Boer R.A.. 1998. Origin of Gilmore gas and oil, Adavale Basin, central Queensland. The APPEA Journal 38 (1), 399–420. https://doi.org/10.1071/AJ97019

Tags: Adavale Basin, EARTH SCIENCES, Gilmore gas field, Hydrogen Assessments, Published_External, australian oil composition, crude oil, isotopic composition, molecular compostion, natural gases
Organization: Australian Ocean Data Network
Marine geology of the Arafura Sea

This Bulletin presents the results of a marine geological survey carried out by BMR in the Arafura Sea in 1969 as part of a program of regional geological reconnaissance mapping of the Australian continental shelf. It is a continuation of work in the Timor Sea and northwest shelf (van Andel, Veevers, 1967; Jones, 1968, 1970). The area surveyed is the northern Australian continental shelf between longitudes 130Â° and 136Â°E and between latitudes 8Â° and 12Â°S (Fig. 1), an area of about 240 000 km-. From 2 to 25 May the Japanese research submersible Yomiuri and its mothership, the converted deepsea tug Yamato, were made available. The major part of the survey lasted from 21 September to 6 December 1969, using the chartered oil-rig supply vessel San Pedro Sound as a platform.

Tags: AU, Bulletin, Earth Sciences, GA Publication, Published_External, geology, marine, marine survey
Organization: Australian Ocean Data Network
An integrated approach to assessing marine seismic impacts: Lessons learnt from the Gippsland Marine Environmental Monitoring project

Marine seismic surveys are a fundamental tool for geological research, including the exploration of offshore oil and gas resources, but the sound generated during these surveys represents a major source of noise pollution in the marine environment. Recent evidence has shown that seismic surveys may negatively affect some cetaceans, fish and invertebrates, although the magnitude of these impacts remains uncertain. This paper applies a case study on marine seismic impacts (the Gippsland Marine Environmental Monitoring (GMEM) project) to the critical assessment of the advantages and challenges of a multi-faceted field-based approach in the context of future research and management priorities. We found that multiple experimental components, including both conventional and innovative methods, facilitate an interdisciplinary approach and also provide a failsafe in case of limited suitable data. Field observational studies provide an unparalleled level of ecological realism, although their practical challenges must be considered during research planning. We also note the need for appropriate environmental baselines and accessible time-series data to account for spatiotemporal variability of environmental and biological parameters that may mask effects, as well as the need for a standardised technique in sound monitoring and equipment calibration to ensure accuracy and comparability among studies.

Citation: Rachel Przeslawski, Brendan Brooke, Andrew G. Carroll, Melissa Fellows, An integrated approach to assessing marine seismic impacts: Lessons learnt from the Gippsland Marine Environmental Monitoring project, Ocean &amp; Coastal Management, Volume 160, 2018, Pages 117-123, ISSN 0964-5691, https://doi.org/10.1016/j.ocecoaman.2018.04.011.

Tags: EARTH SCIENCES, Published_External, fish, marine, scallop
Organization: Australian Ocean Data Network
Changing sea levels of the Australian east coast, suggested by levels of water-laid sand-deposits and by dune morphology

An investigation of beach-sand heavy-mineral deposits between the mouth of the Clarence River in northern New South Wales, and North Stradbroke Island in southern Queensland, was made by the Bureau of Mineral Resources during the years 1948 to 1950. The work done between the mouth of the Clarence River and Southport comprised detailed boring and sampling of beaches and coastal dunes and portion of coastal plains up to a mile or two inland. The levels of the bore-collars were determined in relation to high water mark on the beaches. On North Stradbroke Island, boring was done by Zinc Corporation and a reconnaissance geological investigation by the Bureau of Mineral Resources. The results of this work are being published by the Bureau, and portions of it which have a bearing on the changing sea-levels are summarized below.

Tags: AU-NSW, AU-QLD, Earth Sciences, GA Publication, Published_External, Record, coasts, marine, mineral deposits
Organization: Australian Ocean Data Network
National Gravity Compilation 2019 DGIR tilt grid

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 grid 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 data 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 grid 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, grid, ground digital data, isostatic, marine data, national, raster, residual, satellite data, survey 202008, tilt
Organization: Australian Ocean Data Network
Vegetation and climate of the late Cainozoic in the Murray Basin and their bearing on the salinity problem

The Murray Basin was forested throughout the Tertiary, becoming open woodlands and grasslands in Plio-Pleistocene time. Precipitation was very high through the early Tertiary, with step-like decreases beginning in the late Oligocene- early Miocene. In the mid-late Miocene. widespread rainforest disappeared and was replaced with eucalypt wet sclerophyll forest which was burnt on a regular basis. For a brief interval in the late Miocene- early Pliocene, there is a resurgence of Nothofagus (the Nothofagus phase) which forms a well defined stratigraphic horizon. The Nothofagus phase is well marked in the major river systems of the western slopes of the Eastern Highlands, but it has also been found in the western Murray Basin. The climate was wetter at this time, which is thought to correlate with the late Miocene- early Pliocene maximum marine transgression. An assemblage with a high chenopod type and Asteraceae pollen content is deceptively like modern assemblages of arid regions, but close examination reveals a salt-marsh environment associated with the early mid Miocene marine transgression. Throughout the Tertiary and into the early Pleistocene, the only indications of salinity are associated with marine / marginal marine environments. There is no evidence of dryland salinity, as seen today.

Tags: Earth Sciences, GA Publication, Journal, NSW, Published_External, SA, VIC
Organization: Australian Ocean Data Network
GAB Deepwater Marine Program: Project 4 – Benthic biota of volcanic seamounts, seeps and canyons of the GAB - Video data

This record describes the collections of towed camera imagery -video and stills- (and their derived data) from one Marine National Facility charter voyages conducted under Project 4 - Benthic biota of volcanic seamounts, seeps and canyons of the GAB - of the Great Australian Bight Deepwater Marine Program (GABDMP): IN2015_C01 and IN2017_C01. A key objective for which is to characterise the composition, abundance and distributions of benthic fauna (seabed animals) associated with volcanic seamounts, canyon and seep zone habitats in in ~1000-5000 m depth, within and adjacent to the Chevron lease areas in the GAB. Towed camera transecs were taken at 6 potential seep, 5 volcanic seamount. 
This metadata record refers to the image data collected during the surveys. The 'on-botom' videos and still images have been archived as described in MarLIN record 'Benthic Habitats Video Image Archive' (UUID: 02c32147-b73c-20fe-e053-08114f8c48ee); image annotations collected for this project are added to the data base BHIMAGE.

Organization: Australian Ocean Data Network
Australian Marine Spatial Information System (AMSIS)

AMSIS is a web based interactive mapping and decision support system that improves access to integrated government and non-government information in the Australian Marine Jurisdiction. 
AMSIS contains over 80 layers of information including maritime boundaries, bathymetry, physical and environmental information, legal interests, fisheries and shipping that has been sourced from Geoscience Australia, other Australian government agencies and some industry sources. 
AMSIS also contains the offshore mineral locations data that was used to create the Offshore Minerals Map. 
AMSIS has been developed using standards to support interoperability enabling integration with the National Oceans Portal and other on-line initiatives. Geoscience Australia is working with other agencies and organisations to add additional information. 
Information in this application should not be relied upon as the sole source of information for commercial and operational decisions. AMSIS should not be used for navigational purposes.

Tags: AU, DC2020, Database, Earth Sciences, HVC_144653, National dataset, Published_External, data, marine, marine jurisdiction
Organization: Australian Ocean Data Network
Installation Report for Arcturus (ARA): An inland baseline station for the continuous measurement of atmospheric greenhouse gases

An atmospheric greenhouse gas (GHG) monitoring station began operation in July 2010 near Emerald, Queensland. The station is part of a collaborative project between Geoscience Australia (GA) and CSIRO Marine and Atmospheric Research (CMAR) to establish and operate a high precision atmospheric monitoring facility for measurement of baseline greenhouse gases (GHG) in a high priority geological carbon dioxide storage region. The primary purpose of the station is to field test newly developed greenhouse gas monitoring technology and demonstrate best practice for regional baseline atmospheric monitoring appropriate for geological storage of carbon dioxide. The GHG records were to be used as a reference for monitoring of the atmosphere at a CO2 storage project, providing a baseline to quantify typical variations in the area and a background against which any anomalies in the immediate vicinity of the storage might be detected.
The site chosen for the GHG atmospheric monitoring station is in the locality of Arcturus, 50 km southeast of Emerald in the Central Highlands, Queensland. Site selection was based on the recommendations of the Carbon Storage Taskforce's National Carbon Mapping and Infrastructure Plan, regional assessments of prospective basins, regional atmospheric modelling, and consultation with key stakeholders. The key driver for the stakeholder consultation group was to support early projects for large scale onshore geological storage.  Both the Bowen and Surat basins were identified as potential early mover onshore storage regions by the group and suitable for a regional atmospheric monitoring station. During early 2010, ZeroGen had an active exploration program for geological storage and the site was eventually located approximately 8km upwind from the boundary of ZeroGen's most prospective storage area in the northern Denison Trough, part of the larger Bowen Basin. 
The Arcturus site and environs is representative of the activities and ecology of Queenslan's Central Highlands and the greenhouse gas signals are likely be influenced by cropping, pasture, cattle production, and gas and coal activities. These same activities are also likely to be dominant sources of greenhouse gases in the Surat Basin. Importantly, the site is secure, can be accessed via an existing road, is not subject to flooding, and has easy access to electrical lines that only required the installation of a transformer on an electric pole. A long lead time for new electricity connections at remote sites (potentially greater than 12 months) was identified as a key risk to the project. Negotiations with the electricity supplier resulted in connection in less than 4 months. An access agreement was negotiated with the landowner to enable the installation of the monitoring station and access to the site.

Tags: AU-QLD, Earth Sciences, GA Publication, Published_External, Record, atmosphere, carbon dioxide, geological storage of CO2
Organization: Australian Ocean Data Network
Range expansion of the sea urchin Centrostephanus rodgersii leads to loss of taxonomic diversity in a kelp bed habitat, eastern Tasmania

The long spined sea urchin Centrostephanus rodgersii (Diadematidae) has recently undergone poleward range expansion to eastern Tasmania (southeast Australia). This species is associated with barrens habitat which has been grazed free of macroalgae, and therefore has potentially important consequences for reef structure and biodiversity. 

This study used urchin removal experiments from barrens patches in eastern Tasmania to monitor the subsequent response of the macroalgae relative to unmanipulated barrens patches.

In removal patches, there was a rapid proliferation of canopy-forming macroalgae (Ecklonia radiata and Phyllospora comosa), and within 24 months the algae community structure had converged with that of nearby areas without urchins.

Faunal species richness was comparatively low in barrens habitat, with C. rodgersii grazing activity resulting in an estimated minimum net loss of approximately 150 taxa compared with intact macroalgal habitats.

Tags: 25 211001, 54 080001, 54 102001, Canopy coverage, Centrostephanus rodgersii, Ecklonia radiata, Phyllospora comosa, Species coverage, Substrate coverage, Temperate Reef
Organization: Australian Ocean Data Network