Tappert, Michelle and Rivard, Benoit and Fulop, Alexandrina and Rogge, Derek and Feng, Jilu and Tappert, Ralf and Stalder, Roland (2015) Characterizing Kimberlite Dilution by Crustal Rocks at the Snap Lake Diamond Mine (Northwest Territories, Canada) using SWIR (1.90–2.36 μm) and LWIR (8.1–11.1 μm) Hyperspectral Imagery Collected from Drill Core. Economic Geology, 110 (6), pp. 1375-1387. Society of Economic Geologists. doi: 10.2113/econgeo.110.6.1375. ISSN 0361-0128.
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Official URL: http://econgeol.geoscienceworld.org
Abstract
Short-wave infrared (SWIR, 1.90–2.36 μm) and long-wave infrared (LWIR, 8.1–11.1 μm) hyperspectral images collected using the SisuROCK system were used to develop an automated methodology for generating kimberlite dilution maps. Smoothed and denoised images from two Snap Lake (Northwest Territories, Canada) kimberlite drill cores were processed, and SWIR and LWIR spectral endmembers were extracted from the images with each mineralogical endmember assigned to one of four compositional groups: undiluted kimberlite, microdiluted kimberlite, micro- and macrodiluted kimberlite, and crustal rocks. These endmembers were used to classify the SWIR and LWIR images, and the results were validated using linescan data, drill core logs, petrology reports, and the results of X-ray diffraction, Raman spectroscopy, and Micro-Fourier Transform Infrared (FTIR) spectroscopy. This study demonstrates that hyperspectral imagery can be used to generate dilution maps for hypabyssal kimberlites that far supersede other current techniques in terms of spatial resolution.
Item URL in elib: | https://elib.dlr.de/98032/ | ||||||||||||||||||||||||
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Document Type: | Article | ||||||||||||||||||||||||
Title: | Characterizing Kimberlite Dilution by Crustal Rocks at the Snap Lake Diamond Mine (Northwest Territories, Canada) using SWIR (1.90–2.36 μm) and LWIR (8.1–11.1 μm) Hyperspectral Imagery Collected from Drill Core | ||||||||||||||||||||||||
Authors: |
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Date: | September 2015 | ||||||||||||||||||||||||
Journal or Publication Title: | Economic Geology | ||||||||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||||||||
Open Access: | No | ||||||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||||||
In SCOPUS: | Yes | ||||||||||||||||||||||||
In ISI Web of Science: | Yes | ||||||||||||||||||||||||
Volume: | 110 | ||||||||||||||||||||||||
DOI: | 10.2113/econgeo.110.6.1375 | ||||||||||||||||||||||||
Page Range: | pp. 1375-1387 | ||||||||||||||||||||||||
Publisher: | Society of Economic Geologists | ||||||||||||||||||||||||
ISSN: | 0361-0128 | ||||||||||||||||||||||||
Status: | Published | ||||||||||||||||||||||||
Keywords: | Imaging spectroscopy, Kimberlite dilution, Geology | ||||||||||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||||||
HGF - Program: | Space | ||||||||||||||||||||||||
HGF - Program Themes: | Earth Observation | ||||||||||||||||||||||||
DLR - Research area: | Raumfahrt | ||||||||||||||||||||||||
DLR - Program: | R EO - Earth Observation | ||||||||||||||||||||||||
DLR - Research theme (Project): | R - Vorhaben Fernerkundung der Landoberfläche (old) | ||||||||||||||||||||||||
Location: | Oberpfaffenhofen | ||||||||||||||||||||||||
Institutes and Institutions: | German Remote Sensing Data Center > Land Surface | ||||||||||||||||||||||||
Deposited By: | Rogge, Derek | ||||||||||||||||||||||||
Deposited On: | 02 Sep 2015 08:39 | ||||||||||||||||||||||||
Last Modified: | 17 Nov 2018 05:02 |
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