Data

3D Mineral mapping of Queensland - Version 2 ASTER and related geoscience products

Commonwealth Scientific and Industrial Research Organisation
Cudahy, Tom ; Jones, Mal ; Lisitsin, Vladimir A. ; Caccetta, Mike ; Collings, Simon ; Bateman, Roger
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=info:doi10.25919/5de850a1d2172&rft.title=3D Mineral mapping of Queensland - Version 2 ASTER and related geoscience products&rft.identifier=https://doi.org/10.25919/5de850a1d2172&rft.publisher=Commonwealth Scientific and Industrial Research Organisation&rft.description=The digital 3-dimenional (3D) mineral mapping suite of Queensland comprises ~20 “standardized” products at the spectral resolution of the ASTER (Advanced Space-borne Thermal Emission and Reflection Radiometer) sensor and generated from publicly-available satellite, airborne, field and drill core spectral data spanning the visible near infrared (VNIR; 0.4 to 1.0 µm), shortwave infrared (SWIR; 1.0 to 2.5 µm) and thermal infrared (TIR; 7.5 to 12.0 µm) wavelength regions, including: \n1.\tSatellite ASTER maps at both 30 m and 90 m pixel resolution with complete coverage of the state of Queensland, i.e. 1.853 million km²; \n2.\tAirborne HyMap maps at ~5 m pixel resolution with a coverage of ~25,000 km2 from areas across north Queensland;\n3.\tField point samples (~300) from the National Geochemical Survey of Australia (NGSA) collected from a depth of 0-10 cm of flood overbank sediments;\n4.\tDrill-core profiles (~20) of the National Virtual Core Library (NVCL) selected from the area around the Georgetown seismic line (07GA-IG2).\nKey to the processing of the remote sensing data-sets (ASTER and HyMap) was the implementation of unmixing methods to remove the effects dry and green vegetation. This unmixing was not applied to the Australian ASTER geoscience maps released in 2012 (called here Version 1 or V1) resulting in extensive areas with little/no mineral information because of the need to apply masks. The vegetation unmixing methods used in the Version 2 (V2) processing of the ASTER and HyMap imagery has resulted in very few areas without coherent mineral information. \nThe resultant V2 “mineral group” products were designed to measure mineral information potentially useful for mapping: (i) primary rock composition; (ii) superimposed alteration effects; and (iii) regolith cover. These V2 products may assist in mapping soil properties and groundwater conditions. However their relatively low spectral resolution (based on ASTER’s 14 VNIR-SWIR-TIR bands) means that they do not provide the high level of mineralogical detail available from hyperspectral systems (>100 spectral bands), like HyMap and the HyLogger. Nevertheless, the relatively low spectral resolution of ASTER means that all other sensor data can be spectrally resampled to that resolution. Furthermore, the ASTER global data archive, which now spans entire Earth’s land surface &rft.creator=Cudahy, Tom &rft.creator=Jones, Mal &rft.creator=Lisitsin, Vladimir A. &rft.creator=Caccetta, Mike &rft.creator=Collings, Simon &rft.creator=Bateman, Roger &rft.date=2019&rft.edition=v4&rft.coverage=westlimit=138.0; southlimit=-30.0; eastlimit=154.0; northlimit=-10.0; projection=WGS84&rft_rights=Creative Commons Attribution 4.0 International Licence https://creativecommons.org/licenses/by/4.0/&rft_rights=Data is accessible online and may be reused in accordance with licence conditions&rft_rights=All Rights (including copyright) CSIRO, Geological Survey of Queensland 2017.&rft_subject=Mineral mapping&rft_subject=3D&rft_subject=ASTER&rft_subject=HyMap&rft_subject=NVCL&rft_subject=NGSA&rft_subject=vegetation unmixiing&rft_subject=Geology&rft_subject=Alteration&rft_subject=Regolith&rft_subject=Queensland&rft_subject=Australia&rft_subject=Version 2&rft_subject=Exploration geochemistry&rft_subject=Geochemistry&rft_subject=EARTH SCIENCES&rft_subject=Mineralogy and crystallography&rft_subject=Geology&rft_subject=Geology not elsewhere classified&rft_subject=Geophysics not elsewhere classified&rft_subject=Geophysics&rft_subject=Geomorphology and earth surface processes&rft_subject=Physical geography and environmental geoscience&rft_subject=Other earth sciences not elsewhere classified&rft_subject=Other earth sciences&rft_subject=Photogrammetry and remote sensing&rft_subject=Geomatic engineering&rft_subject=ENGINEERING&rft_subject=Soil sciences not elsewhere classified&rft_subject=Soil sciences&rft_subject=ENVIRONMENTAL SCIENCES&rft_subject=Other environmental sciences not elsewhere classified&rft_subject=Other environmental sciences&rft.type=dataset&rft.language=English Access the data
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Data is accessible online and may be reused in accordance with licence conditions

All Rights (including copyright) CSIRO, Geological Survey of Queensland 2017.

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Brief description

The digital 3-dimenional (3D) mineral mapping suite of Queensland comprises ~20 “standardized” products at the spectral resolution of the ASTER (Advanced Space-borne Thermal Emission and Reflection Radiometer) sensor and generated from publicly-available satellite, airborne, field and drill core spectral data spanning the visible near infrared (VNIR; 0.4 to 1.0 µm), shortwave infrared (SWIR; 1.0 to 2.5 µm) and thermal infrared (TIR; 7.5 to 12.0 µm) wavelength regions, including: \n1.\tSatellite ASTER maps at both 30 m and 90 m pixel resolution with complete coverage of the state of Queensland, i.e. 1.853 million km²; \n2.\tAirborne HyMap maps at ~5 m pixel resolution with a coverage of ~25,000 km2 from areas across north Queensland;\n3.\tField point samples (~300) from the National Geochemical Survey of Australia (NGSA) collected from a depth of 0-10 cm of flood overbank sediments;\n4.\tDrill-core profiles (~20) of the National Virtual Core Library (NVCL) selected from the area around the Georgetown seismic line (07GA-IG2).\nKey to the processing of the remote sensing data-sets (ASTER and HyMap) was the implementation of unmixing methods to remove the effects dry and green vegetation. This unmixing was not applied to the Australian ASTER geoscience maps released in 2012 (called here Version 1 or V1) resulting in extensive areas with little/no mineral information because of the need to apply masks. The vegetation unmixing methods used in the Version 2 (V2) processing of the ASTER and HyMap imagery has resulted in very few areas without coherent mineral information. \nThe resultant V2 “mineral group” products were designed to measure mineral information potentially useful for mapping: (i) primary rock composition; (ii) superimposed alteration effects; and (iii) regolith cover. These V2 products may assist in mapping soil properties and groundwater conditions. However their relatively low spectral resolution (based on ASTER’s 14 VNIR-SWIR-TIR bands) means that they do not provide the high level of mineralogical detail available from hyperspectral systems (>100 spectral bands), like HyMap and the HyLogger. Nevertheless, the relatively low spectral resolution of ASTER means that all other sensor data can be spectrally resampled to that resolution. Furthermore, the ASTER global data archive, which now spans entire Earth’s land surface <80degrees latitude, means that it can be used as global base-map for integrating all other spectral data. \n\nLineage: The raw ASTER data used in this project are freely available from the United States Geological Survey (USGS) Land Processes Distributed Active Archive Centre (LPDAAC) (https://lpdaac.usgs.gov/dataset_discovery/aster/aster_products_table/ast_l1t) as well as NASA’s REVERB (http://reverb.echo.nasa.gov) and Japan’s Advanced Institute for Science Technology (AIST) https://gbank.gsj.jp/madas/map. \nThe Australian ASTER Geoscience (V1) Maps can be downloaded from CSIRO’s Data Access Portal (DAP) (https://data.csiro.au/dap/landingpage?pid=csiro%3A6182) and Geoscience Australia’s Australian Geoscience Information Network, Geoscience Australia (AUSGIN) (http://portal.geoscience.gov.au/gmap.html). \nThe NVCL data can be downloaded from http://www.auscope.org.au/nvcl or http://portal.geoscience.gov.au/gmap.html. \nThe National Geochemical Survey of Australia (NGSA) spectral data is accessible via CSIRO’s Data Access Portal http://www.ga.gov.au/about/projects/minerals-archive/concluded/national-geochemical-survey.\n

Available: 2019-12-06

Data time period: 2014-12-01 to 2016-12-01

154,-10 154,-30 138,-30 138,-10 154,-10

146,-20

Subjects
3D | ASTER | Alteration | Australia | Earth Sciences | Engineering | Environmental Sciences | Exploration Geochemistry | Geochemistry | Geology | Geology | Geology Not Elsewhere Classified | Geomatic Engineering | Geomorphology and Earth Surface Processes | Geophysics | Geophysics Not Elsewhere Classified | HyMap | Mineral mapping | Mineralogy and Crystallography | NGSA | NVCL | Other Earth Sciences | Other Earth Sciences Not Elsewhere Classified | Other Environmental Sciences | Other Environmental Sciences Not Elsewhere Classified | Photogrammetry and Remote Sensing | Physical Geography and Environmental Geoscience | Queensland | Regolith | Soil Sciences | Soil Sciences Not Elsewhere Classified | Version 2 | vegetation unmixiing |

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