AndreaBozzo/ceres-open-data-index huggingface dataset:
Preliminary report on the geology of the north-west portion of the Gilgit Agency, Pakistan

Three geologists left Australia in 1951 to conduct geological surveys in Pakistan, under the auspices of the Colombo Plan which provides technical assistance for member countries in South and South East Asia. The main objects were to conduct an economic and general geological survey of a selected part of the Gilgit Agency, to examine the alluvial-gold prospects of the Chitral River, and, if time permitted, to discuss the Sind and East Bengal lignites with the Director of the Pakistan Geological Survey. This report is confined to the geological surveys in the Gilgit Agency. In June 1951, the party commenced field work from Gilgit, and spent three month in the region. Several reported mineral occurrences were examined in the Hunza, Nagir, Gilgit, Haramosh, Gupis, Ishkuman, and Yasin areas; a regional geological survey of approximately 5,000 square miles was completed.

Tags: GA Publication, Geology, PK, Published_External, Record, economic geology, geology, mineral deposits, stratigraphy, structural geology
Organization: Geoscience Australia Data
A reconnaissance magnetic survey of an area southwest of Brown's workings, Rum Jungle, N.T

During the 1952 field season a series of test traverses using magnetic and self-potential methods was carried out over the known radio-active deposits in the Rum Jungle area, to discover whether any definite anomalies were associated with surface showings of radio-active minerals. In the course of the magnetic work in Brown's area, a major magnetic anomaly was discovered south-west of the workings, and a reconnaissance magnetic survey was carried out in order to obtain information on its extent. [Technical details and the preliminary results of the survey are discussed in this report].

Tags: AU-NT, Earth Sciences, GA Publication, Published_External, Record, geophysics, magnetics, prospectivity
Organization: Geoscience Australia Data
Geophysical survey of the Trevallyn Tunnel line, Launceston, Tasmania

At the request of the Tasmanian Hydro-Electric Commission a geophysical survey was carried out along a tunnel line at Trevallyn, a suburb of Launceston, North Eastern Tasmania. The excavation of the Trevallyn tunnel is part of the Hydro-Electric Trevallyn Power Development project to utilise the water of the South Esk river for generation of electric power. The construction works are already well advanced. A dam is being built on the river at the Second Basin. Water from the catchment will be diverted through a tunnel two miles long to a power station situated at sea level on the Tamar River. A locality map is given in Plate 1. Three geophysical exploration methods, electrical, seismic and gravitational, were used to locate deeply weathered and fractured zones in the dolerite bedrock, through which the tunnel is being driven.

Tags: AU-TAS, Earth Sciences, GA Publication, Published_External, Record, energy infrastructure, geophysics, infrastructure
Organization: Geoscience Australia Data
Hydrogen in Australian natural gas: occurrences, sources and resources

Natural or native molecular hydrogen (H2) can be a major component in natural gas, and yet its role in the global energy sector’s usage as a clean energy carrier is not normally considered. Here, we update the scarce reporting of hydrogen in Australian natural gas with new compositional and isotopic analyses of H2 undertaken at Geoscience Australia. The dataset involves ~1000 natural gas samples from 470 wells in both sedimentary and non-sedimentary basins with reservoir rock age ranging from the Neoarchean to Cenozoic. Pathways to H2 formation can involve either organic matter intermediates and its association with biogenic natural gas or chemical synthesis and its presence in abiogenic natural gas. The latter reaction pathway generally leads to H2-rich (&gt;10 mol% H2) gas in non-sedimentary rocks. Abiogenic H2 petroleum systems are described within concepts of source-migration-reservoir-seal but exploration approaches are different to biogenic natural gas. Rates of abiogenic H2 generation are governed by the availability of specific rock types and different mineral catalysts, and through chemical reactions and radiolysis of accessible water. Hydrogen can be differently trapped compared to hydrocarbon gases; for example, pore space can be created in fractured basement during abiogenic reactions, and clay minerals and evaporites can act as effective adsorbents, traps and seals. Underground storage of H2 within evaporites (specifically halite) and in depleted petroleum reservoirs will also have a role to play in the commercial exploitation of H2. Estimated H2 production rates from water radiolysis in mafic-ultramafic and granitic rocks and serpentinisation of ultramafic-mafic rocks gives a H2 inferred resource potential between ~1.6 to ~58 MMmH3y-1 for onshore Australia down to a depth of 1 km. The prediction and subsequent identification of subsurface H2 that can be exploited remains enigmatic and awaits robust exploration guidelines and targeted drilling for proof of concept.

Appeared in The APPEA Journal 61(1) 163-191, 2 July 2021

Tags: Amadeus Basin, Bass Basin, Bonaparte Basin, Bowen-Surat basins, Browse Basin, Canning Basin, Cooper-Eromanga basins, EARTH SCIENCES, Gippsland Basin, Gunnedah Basin, Hydrogen, Northern Carnarvon, Organic geochemistry, Otway Basin, Perth Basin, Published_External, Timor Sea, natural gas, resource potential
Organization: Geoscience Australia Data
Mount Lamington vulcanological observations: progress report, February 1953

The activity of Mount Lamington over the last half year has tended to confirm conclusions drawn from earlier observations, namely, that conditions of slow decline in overall activity pointed towards a return to the dormant state. There have been fluctuations in activity during this period, renewed dome building in some sectors of the crater and on one occasion, explosions were reported to have occurred near the dome summit.

Tags: Earth Sciences, GA Publication, PG, Published_External, Record, volcanology
Organization: Geoscience Australia Data
Open cut coal scout drilling, Stony Pinch, and Thornton area

Six scout drilling holes totalling 1020 feet of drilling were sunk by the Bureau in the Stony Pinch and Thornton Area, about 6 miles south-south-east of the City of Maitland in the Hunter Valley of N.S.W. The bores penetrated the Four Mile Creek beds and the Buttai Sandstone of the Tomago "Stage" of the "Upper" Coal Measures. In the absence of reliable stratigraphical control, the seams cannot be correlated with much certainty. Bore BMR 4 Stony Punch indicated that Donaldson's Seam(?) is thin and much banded; the coal, excluding bands, has an ash content of about 15% and calorific value of 12,300 B.Th.U/lb. This same bore showed that the basal 7 feet 3 inches of the Big Ben Seam had an ash content of about 25% and calorific value of 10,600 B.Th.U/lb. if 8 inches of non-coal bands are excluded. The general results of the drilling were that the coal seams were heavily banded, variable and high in inherent ash. Accordingly the prospecting was halted after drilling six holes.

Tags: AU-NSW, Earth Sciences, GA Publication, Published_External, Record, commodities, mineral exploration, resource assessment
Organization: Geoscience Australia Data
Open cut coal programme-Newcastle region, Buchanan area Drilling results

A total of 22 "testing and defining" rotary cored drill holes were drilled by the Bureau and J. McD. Royle Ltd., contractor to the Bureau, during the prospecting for reserves of open-cut coal in the Tomago Stage of the Upper Coal Measures near Buchanan. These 22 holes involved 3640 ft. of drilling and indicated possible reserves of 4,200,000 tons of coal suitable for mining by underground and open cut methods. 

The geology of the area, and the operations carried out, including mining, logging, sampling, analysis, and surveying, are discussed. The results of the drilling programme are shown in the accompanying maps, and graphic and bore logs.

Tags: AU-NSW, GA Publication, Geology, Published_External, Record, commodities, mining, resource assessment
Organization: Geoscience Australia Data
Statement of magnetic surveys in Australia and Sub-Antarctic Islands 1951-1953

This report summarises the activities of the Geophysical Section of the Bureau of Mineral Resources, Geology and Geophysics of the Department of National Development in so far as the magnetic secular variation at stations under its control is concerned. It is a continuation of previous reports submitted to the International Union of Geodesy and Geophysics, the last of which covered activities during the years 1948-51.

Tags: AU, Earth Sciences, GA Publication, Published_External, Record, geodesy, geomagnetism, geophysics
Organization: Geoscience Australia Data
A report on the change of correction to International Magnetic Standard of the quartz horizontal magnetometers of the Geophysical Section of the Bureau of Mineral Resources during the period March 1951 to June 1952

During 1951 three separate sets of La Cour pattern Quartz Horizontal Magnetometers were received from the Danish Meteorological Institute. These instruments which are only semi-absolute, were calibrated at the Rude Skov Magnetic Observatory against the standard adopted by that observatory. As the Australian observatories are based on the International Magnetic Standard housed at Cheltenham near Washington, U.S.A. (hereinafter referred to as I.M.S.) it was decided to compare them against the Toolangi magnetometer as soon as possible after their arrival in Australia. Moreover, as the stability of these instruments depends on the torsion properties of a quartz fibre and on the magnetic moment of a magnet, regular comparisons should be made with an absolute magnetometer and the results used to control drift that might occur. The comparisons made immediately after the arrival of the instruments in Australia would thus constitute a starting point in the future control of the Q.H.Ms. [An account is given of work done between 1951 and 1952. Results are appended.]

Tags: Earth Sciences, GA Publication, Published_External, Record, geophysics
Organization: Geoscience Australia Data
The geology of the Rye Park district

An area of approximately 32 square miles in the vicinity of Rye Park has been mapped in greater detail than that of previous regional surveys. Three possible tungsten-bearing areas have been delineated as warranting magnetometric and plane-table surveys. An extension of each of these three areas is indicated. Attention is drawn to copper, tin, silver, lead, and zinc mineralisation of the area, and it is considered that there are possibilities of finding payable orebodies containing these metals.

Tags: AU-NSW, Earth Sciences, GA Publication, Published_External, Record, geology, mapping, mineral deposits
Organization: Geoscience Australia Data
Micropalaeontological report on samples from two bores near Bourke, Northern New South Wales

Bore No. 8287, Mr. E.J. Riches, "Myrnong", Bourke - Thirteen samples were submitted for examination from this bore. A detailed examination of these is given below. Bore No. 4676, P. Mallon, "Avoca", Bourke - Fourteen samples were submitted from this bore and a detailed examination of them is as follows.

Tags: AU-NSW, Earth Sciences, GA Publication, Published_External, Record, palaeontology
Organization: Geoscience Australia Data
Territory of Papua and New Guinea, report of investigation of volcanic activity Manam Island, T.N.G., April, 1953

In March, 1953, the writer received a report concerning increased volcanic activity at Manam Island. Subsequently, the writer proceeded to Manam in order to investigate these reports. This report gives an account of the investigation and its findings. The structure of the island, volcanic activity, seismic activity, and the rock types encountered, are discussed.

Tags: Earth Sciences, GA Publication, PG, Published_External, Record, volcanology
Organization: Geoscience Australia Data
L087, Ice Thickness Measurement by seismic and gravimetric methods, Antarctica, 1957, 1958

The report describes work carried out during an ice thickness survey by seismic and gravimetric methods made in the summer of 1957-58 in MacRobertson Land, Antarctica. Methods used during the survey are described and the equipment used is listed in detail. Results have not yet been analysed fully but preliminary profiles are given. The accuracy limits applying to these profiles are given and future extensions of the calcu18tions are discussed.

Tags: AQ, Published_External, Seismic Data, Seismology and Seismic Exploration, geophysics, seismic reflection, seismic refraction, seismic survey
Organization: Geoscience Australia Data
Note on copper possibilities - James Range, Central Australia

During the past three to five years small amounts of oxidized copper ore have been reported from various localities in the James Ranges to the west of Alice Springs. During a visit to Alice Springs in July of this year information on these deposits was obtained from the Resident Geologists, A.D.M. Bell, and it is considered that potentially they may be of considerable importance and Bell has been instructed to investigate them further. The deposits are briefly discussed in the monthly report by Bell dated 3rd July, 1953. In this report he states that the rocks to the west of Alice Springs, where limestones are developed only on a comparatively small scale, are not likely to contain ore deposits to the extent of those to the east of Alice Springs where extensive limestone deposits occur. This concept is discussed below. [A supplementary note is enclosed which describes an inspection of the area which was conducted in September 1953].

Tags: AU-NT, Earth Sciences, GA Publication, Published_External, Record, geology, mineral deposits, ore
Organization: Geoscience Australia Data
The Maranboy tinfield Progress report

A geological investigation of the Maranboy Tin Field was commenced by officers of the Bureau of Mineral Resources in May, 1951. The object of the survey is, primarily, to obtain a detailed preliminary assessment of the potential ore reserves of the field. Geological mapping and sampling of the major lode lines has been carried out in an attempt to determine the features which control ore deposition and to enable estimates to be prepared of the grade and tonnage of ore per vertical foot, which may be expected from these lode lines. The main emphasis of this work during the 1951 field season was on the major producing lines in what has been called the Southern Field, the Main Lode and part of the Stannum King lode. In addition to this programme, an area of approximately nine square miles was mapped in detail using aerial photographs. Approximately 1,000 square miles of the area surrounding Maranboy was mapped on a regional basis.

The history of the field, general geology, and the geology of the individual lodes are discussed in this report. The accompanying maps are enclosed.

Tags: AU-NT, GA Publication, Geology, Published_External, Record, geology, mineral deposits, ore, resource assessment
Organization: Geoscience Australia Data
L109 South-Eastern Georgina Basin seismic survey, QLD, 1977 Stacked seismic data and images for lines BMR77-01, BMR77-02, BMR77-03, BMR77-04, BMR77-05, BMR77-06, BMR77-07, BMR77-09, BMR77-10, BMR77-11, BMR77-12, BMR77-13, and BMR77-14

The Bureau of Mineral Resources conducted a combined seismic and detailed gravity survey in 1977 to investigate the nature and structure of the Toko Syncline in the Georgina Basin and the nature of the Toomba fault which forms the southwest margin of the syncline. The survey recorded a total of 285 km of reflection coverage mainly with six-fold common-depth-point recording, but some twelve-fold in the area of the Toomba Fault.

Tags: AU-QLD, HVC_144637, Published_External, Seismic Data seismic survey, Seismology and Seismic Exploration, geophysics, mineral exploration, petroleum exploration, seismic reflection, seismic sections
Organization: Geoscience Australia Data
L089 Wilkes ice thickness measurements, Antarctica, 1961

Ice thickness measurements were made in 1961 by seismic methods on a line southward from S-2, a glaciological station 50 miles east-south-east of Wilkes Base, Antarctica. The traverse constituted the first year's work of a three-year programme. The results showed that the rock underlying the ice dips below sea level at a point between 20 and 40 miles south of S-2. It remains below sea level at all the locations occupied to the south, as far as 280 miles south of S-2, where the rock surface is again above sea level. The main feature is a valley disclosed in the rock formation between 40 and 80 miles south of S-2. Midway between these two points the rock lies at approximately 7500 ft below sea level. The positions of the Totten Glacier and the John Quincy Adams Glacier suggest that the valley may have been responsible for their formation.

Tags: AQ, Published_External, Seismic Data, Seismology and Seismic Exploration, geophysics, seismic reflection, seismic survey, seismic velocity
Organization: Geoscience Australia Data
Historical Bushfire Boundaries - Version 2.0

The Bushfire Boundaries - Historical Dataset (version 2) represents the aggregation of jurisdictional supplied burnt areas polygons that date from the early 1900's through to 2023 (excluding the Northern Territory). The burnt areas represent curated jurisdictional owned polygons of both bushfires and prescribed (planned) burns.



This dataset was produced under Work Stream 1C - Activity 3 of the National Bushfire Intelligence Capability; a collaborative partnership between the Australian Climate Services, CSIRO (NBIC), Geoscience Australia (GA), and the Emergency Management Spatial Information Network (EMSINA). Under agreement this Project (Activity 3) will release a nationally consistent, harmonised and standardised historical bushfire boundary dataset derived from the authoritative state and territory agencies in both 2023 (this dataset) and again in November 2024. 



The information released within this dataset is reflective of the data supplied by participating authoritative agencies. It may, or may not, represent all fire history within that jurisdiction.



Tags: Bushfire Boundaries, Bushfires, ENVIRONMENTAL SCIENCES, Fires, National Bushfire Intelligence Capability, Published_External, Wildfires
Organization: Geoscience Australia Data
Scout-drilling for open cut coal, Minmi-Plattsburg area, Newcastle region, New South Wales

Eleven scout drill holes entailing 1290 feet of drilling were sunk to find suitable open-cut prospecting areas for the Young Wallsend Seam of the "Upper" Coal Measures within an area of one square mile in Portion 10, Parish of Hexham, Newcastle Region, N.S.W. Several drill holes intersected the Dudley (?) and Yard Seams overlying the Young Wallsend Seam. The scout drilling defined the following inferred reserves of coal: [see record for table data]. These figures do not take into account weathering and possible worked-out areas which may reduce the reserves by as much as 30%. The seams are banded and the quality of the coal could probably be improved considerably by washing. The scout drilling did not define accurately the overburden ratios; however, it is likely that overburden to coal ratio for the Dudley (?) Seam will average very roughly 5:1 and for Young Wallsend about 9:1 if the Dudley is mined beforehand where it overlies the Young Wallsend. These results did not justify commencing a "testing and defining" drilling programme. The Yard Seam was not investigated in detail; its thinness precludes it from having any importance for open-cut mining.

Tags: AU-NSW, Earth Sciences, GA Publication, Published_External, Record, commodities, mineral exploration, resource assessment, stratigraphy
Organization: Geoscience Australia Data
L093 Wilkes Ice thickness and related studies, Antarctica, 1965, 1966

This report outlines the field geophysical work carried out in the vicinity of Wilkes Base (Lat. 660 15' 8, Long. 1100 31' E), Australian Antarctic Territory, during the Australian National Antarctic Research Expedition of 1965-66. The work can be broadly divided into four parts. 1. An autumn traverse where seismic reflection stations were established every 10 miles around a triangle with corners at Cape Folger, the Dome Centre and Cape Poinsett. 2. A mid winter traverse to the inland glaciology station S-2 for a programme of seismic ice velocity studies. 3. A spring traverse where a rectangular grid network of seismic, gravity, and elevation stations were installed in a region between S-2 and 80 miles south of S-2. 4. Two attempts at recording reflections off the Mohorovicic discontinuity shot in the vicinity of Wilkes.

Tags: AQ, Published_External, Seismic Data, Seismology and Seismic Exploration, geophysics, seismic reflection, seismic survey, seismic velocity
Organization: Geoscience Australia Data
Petrographic description of 21 rock specimens from Muswellbrook, New South Wales

The following report contains descriptions of thin sections and handspecimens of 21 rocks collected from cores in the Muswellbrook area. Rocks numbered 1 to 18 inclusive have previously been described (Records 1953/79) and the following rocks are numbered 19 to 35 inclusive. Locality and depth are also given.

Tags: AU-NSW, Earth Sciences, GA Publication, Published_External, Record, petrography
Organization: Geoscience Australia Data
The Petroleum Systems of the Bonaparte Basin

The Cambrian to Recent Bonaparte Basin is located on the North-west shelf of Australia and extends 329,000 sq. km offshore and onshore. The region is an established hydrocarbon province with a number of commercial discoveries. New infrastructure is being constructed within the region, such as the Bayu-Undan LNG plant, with a number of giant gas accumulations yet to be developed. The area has remaining oil and gas potential, particularly in the Vulcan Sub-basin, Laminaria-Flamingo High and northern Sahul Platform areas, with additional discoveries likely within the next decade. The main exploration risk in the region is fault seal breach.

The Bonaparte Basin has seven petroleum systems based on geological and geochemical information. The systems are concentrated in the Jurassic, Permian and Carboniferous:
Jurassic
Elang-Elang (!): Sahul Syncline, Flamingo High
Plover-Plover (.): Malita Graben Sahul Platform
Vulcan-Plover (!): Vulcan Sub-basin
Permian
Hyland Bay-Hyland Bay (?): Kelp High
Hyland Bay-Keyling-Hyland Bay (.): Central Petrel Sub-basin
Permian-Hyland Bay (?): Londonderry High
Permo-Carboniferous
Milligans-Kuriyippi/Milligans (!): Southern Petrel Sub-basin
(!) : Known hydrocarbon-source correlation
(.) : Geochemical evidence for a hypothetical system
(?) : Lack of direct evidence for a speculative system

Tags: AU-NT, Earth Sciences, GA Publication, Other Publication, Published_External, petroleum geology
Organization: Geoscience Australia Data