Alberta Core Locations (with Imagery Data Links)Link copied to clipboard!
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- Description:
Spatial dataset compiled by Alberta Geological Survey containing core locations in Alberta, Canada, linked to hyperspectral imagery and high-resolution photographs.
The individual hyperspectral images and data available are organized categorically into short wavelength infrared (SWIR), long wavelength infrared (LWIR), visible and near-infrared (VNIR) and red-green-blue (RGB) downloadable zip archives. The pixel resolution varies with category: RGIB=0.1mm, VNIR=0.45 mm (resampled to 1.13 mm), SWIR=1.13mm, LWIR=1.13mm.
RGB = high resolution, natural colour photograph of core sample.
SWIR images include both peak-wavelength mean (wavelength position) and peak-height mean (intensity) images for determination of mineral species and abundance.
Wavelengths measured, and images available under the category of SWIR include:
1) 1,400 nm which measures the hydroxyl ion and is related to sericite, illite, kaolinite, clays and (to a lesser extent), ferromagnesian minerals.
2) 1,950 nm which measures water, either bound in minerals or unbound.
3) 2,165 nm, which measures kaolinite, dickite, pyrophyllite and alunite.
4) 2,200 nm, which measures AlOH in clay and sericite.
5) 2,250 nm, which measures Fe2+-OH in chlorite and (moderately to weakly) in epidote, biotite and amphibole.
6) 2,300 nm, which measures MgOH, and can act as a proxy for hydrocarbon.
7) 2,350 nm, which measures MgOH in strongly magnesian minerals such as amphibole and biotite.
The peak-height mean values determined for each wavelength band measured, at each measured depth, can be viewed under “numerical reports” as both (0.01)_00DH-03_Depth Mean Report and (0.1)_00DH-03_Depth Mean Report with the values given as intensities. Note that 0.01 refers to 1 cm interval spacing and 0.1 refers to 10 cm interval spacing.
The peak-wavelength mean values determined for each wavelength band measured, at each measured depth, can be viewed under “numerical reports” as both (0.1)_00DH-03_Wavelength Mean Report and (0.01)_00DH-03_Wavelength Mean Report.
Wavelengths measured, and images available, under the category of LWIR include:
1) 7,600 – 11,900 nm which measures, across the LWIR spectrum, the intensity (peak height mean) and wavelength position (peak-wavelength mean) of the largest peak
2) 8,000 nm, which is used to measure sulphide-bearing minerals as well as silica
3) 9,000 nm, which is used to measure silica
4) 9,600 nm, which is used to measure AlOH minerals, MgOH minerals and alkali feldspar
5) 9,800 nm, which is used to measure AlOH minerals, MgOH minerals and plagioclase feldspar
6) 11,200 nm, which is used to measure dolomite
7) 11,300 nm, which is used to measure calcite
The peak-height mean values determined for each wavelength band measured, at each depth, for LWIR and VNIR are also available in the respective “numerical reports” folders.
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- Author(s):
- Alberta Geological Survey
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- Source Repository:
- Alberta Geological Survey Open Data Portal
- Publisher(s):
- Alberta Geological Survey
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- Access:
- Public
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- License:
The Alberta Geological Survey and its employees, agents, authors, or contributors make no warranty, guarantee or representation, express or implied, or assume any legal liability regarding the correctness, accuracy, completeness, or reliability of this dataset. When referencing the dataset in publications, presentations, or on the websites, due acknowledgement should be given to the Alberta Energy Regulator / Alberta Geological Survey.
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- URL:
- https://geology-ags-aer.opendata.arcgis.com/datasets/ags-aer::alberta-core-locations-with-imagery-data-links
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- Publication date:
- 2023-03-14
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- Subjects:
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- Keywords:
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- Identifier:
- https://www.arcgis.com/home/item.html?id=b2305acce04449ae95629a690f794cf3&sublayer=0
Geospatial information
Citation
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- APA Citation:
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Survey, A. G. (2023). Alberta Core Locations (with Imagery Data Links) [Data set]. Alberta Geological Survey Open Data Portal. https://geology-ags-aer.opendata.arcgis.com/datasets/ags-aer::alberta-core-locations-with-imagery-data-linksCitation copied to clipboard
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