Unravelling the Deformation of Paleoproterozoic Marbles and Zn-Pb Ore Bodies by Combining 3D-Photogeology and Hyperspectral Data (Black Angel Mine, Central West Greenland)
The Black Angel Zn-Pb ore deposit is hosted in folded Paleoproterozoic marbles of the Mârmorilik Formation. It is exposed in the southern part of the steep and inaccessible alpine terrain of the Rinkian Orogen, in central West Greenland. Drill-core data integrated with 3D-photogeology and hyperspect...
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MDPI AG
2022
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Online Access: | https://doi.org/10.3390/min12070800 https://doaj.org/article/b028fc29da9a44a3b3a1de3f15cc8ecf |
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ftdoajarticles:oai:doaj.org/article:b028fc29da9a44a3b3a1de3f15cc8ecf 2024-01-07T09:43:33+01:00 Unravelling the Deformation of Paleoproterozoic Marbles and Zn-Pb Ore Bodies by Combining 3D-Photogeology and Hyperspectral Data (Black Angel Mine, Central West Greenland) Pierpaolo Guarnieri Sam T. Thiele Nigel Baker Erik V. Sørensen Moritz Kirsch Sandra Lorenz Diogo Rosa Gabriel Unger Robert Zimmermann 2022-06-01T00:00:00Z https://doi.org/10.3390/min12070800 https://doaj.org/article/b028fc29da9a44a3b3a1de3f15cc8ecf EN eng MDPI AG https://www.mdpi.com/2075-163X/12/7/800 https://doaj.org/toc/2075-163X doi:10.3390/min12070800 2075-163X https://doaj.org/article/b028fc29da9a44a3b3a1de3f15cc8ecf Minerals, Vol 12, Iss 7, p 800 (2022) 3D-photogeology hyperspectral data Greenland Paleoproterozoic Zn-Pb ore deposits Mineralogy QE351-399.2 article 2022 ftdoajarticles https://doi.org/10.3390/min12070800 2023-12-10T01:49:07Z The Black Angel Zn-Pb ore deposit is hosted in folded Paleoproterozoic marbles of the Mârmorilik Formation. It is exposed in the southern part of the steep and inaccessible alpine terrain of the Rinkian Orogen, in central West Greenland. Drill-core data integrated with 3D-photogeology and hyperspectral imagery of the rock face allow us to identify stratigraphic units and extract structural information that contains the geological setting of this important deposit. The integrated stratigraphy distinguishes chemical/mineralogical contrast within lithologies dominated by minerals that are difficult to distinguish with the naked eye, with a similar color of dolomitic and scapolite-rich marbles and calcitic, graphite-rich marbles. These results strengthen our understanding of the deformation style in the marbles and allow a subdivision between evaporite-carbonate platform facies and carbonate slope facies. Ore formation appears to have been mainly controlled by stratigraphy, with mineralizing fluids accumulating within permeable carbonate platform facies underneath carbonate slope facies and shales as cap rock. Later, folding and shearing were responsible for the remobilization and improvement of ore grades along the axial planes of shear folds. The contact between dolomitic scapolite-rich and calcitic graphite-rich marbles probably represents a direct stratigraphic marker, recognizable in the drill-cores, to be addressed for further 3D-modeling and exploration in this area. Article in Journal/Newspaper Greenland Directory of Open Access Journals: DOAJ Articles Greenland Minerals 12 7 800 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
3D-photogeology hyperspectral data Greenland Paleoproterozoic Zn-Pb ore deposits Mineralogy QE351-399.2 |
spellingShingle |
3D-photogeology hyperspectral data Greenland Paleoproterozoic Zn-Pb ore deposits Mineralogy QE351-399.2 Pierpaolo Guarnieri Sam T. Thiele Nigel Baker Erik V. Sørensen Moritz Kirsch Sandra Lorenz Diogo Rosa Gabriel Unger Robert Zimmermann Unravelling the Deformation of Paleoproterozoic Marbles and Zn-Pb Ore Bodies by Combining 3D-Photogeology and Hyperspectral Data (Black Angel Mine, Central West Greenland) |
topic_facet |
3D-photogeology hyperspectral data Greenland Paleoproterozoic Zn-Pb ore deposits Mineralogy QE351-399.2 |
description |
The Black Angel Zn-Pb ore deposit is hosted in folded Paleoproterozoic marbles of the Mârmorilik Formation. It is exposed in the southern part of the steep and inaccessible alpine terrain of the Rinkian Orogen, in central West Greenland. Drill-core data integrated with 3D-photogeology and hyperspectral imagery of the rock face allow us to identify stratigraphic units and extract structural information that contains the geological setting of this important deposit. The integrated stratigraphy distinguishes chemical/mineralogical contrast within lithologies dominated by minerals that are difficult to distinguish with the naked eye, with a similar color of dolomitic and scapolite-rich marbles and calcitic, graphite-rich marbles. These results strengthen our understanding of the deformation style in the marbles and allow a subdivision between evaporite-carbonate platform facies and carbonate slope facies. Ore formation appears to have been mainly controlled by stratigraphy, with mineralizing fluids accumulating within permeable carbonate platform facies underneath carbonate slope facies and shales as cap rock. Later, folding and shearing were responsible for the remobilization and improvement of ore grades along the axial planes of shear folds. The contact between dolomitic scapolite-rich and calcitic graphite-rich marbles probably represents a direct stratigraphic marker, recognizable in the drill-cores, to be addressed for further 3D-modeling and exploration in this area. |
format |
Article in Journal/Newspaper |
author |
Pierpaolo Guarnieri Sam T. Thiele Nigel Baker Erik V. Sørensen Moritz Kirsch Sandra Lorenz Diogo Rosa Gabriel Unger Robert Zimmermann |
author_facet |
Pierpaolo Guarnieri Sam T. Thiele Nigel Baker Erik V. Sørensen Moritz Kirsch Sandra Lorenz Diogo Rosa Gabriel Unger Robert Zimmermann |
author_sort |
Pierpaolo Guarnieri |
title |
Unravelling the Deformation of Paleoproterozoic Marbles and Zn-Pb Ore Bodies by Combining 3D-Photogeology and Hyperspectral Data (Black Angel Mine, Central West Greenland) |
title_short |
Unravelling the Deformation of Paleoproterozoic Marbles and Zn-Pb Ore Bodies by Combining 3D-Photogeology and Hyperspectral Data (Black Angel Mine, Central West Greenland) |
title_full |
Unravelling the Deformation of Paleoproterozoic Marbles and Zn-Pb Ore Bodies by Combining 3D-Photogeology and Hyperspectral Data (Black Angel Mine, Central West Greenland) |
title_fullStr |
Unravelling the Deformation of Paleoproterozoic Marbles and Zn-Pb Ore Bodies by Combining 3D-Photogeology and Hyperspectral Data (Black Angel Mine, Central West Greenland) |
title_full_unstemmed |
Unravelling the Deformation of Paleoproterozoic Marbles and Zn-Pb Ore Bodies by Combining 3D-Photogeology and Hyperspectral Data (Black Angel Mine, Central West Greenland) |
title_sort |
unravelling the deformation of paleoproterozoic marbles and zn-pb ore bodies by combining 3d-photogeology and hyperspectral data (black angel mine, central west greenland) |
publisher |
MDPI AG |
publishDate |
2022 |
url |
https://doi.org/10.3390/min12070800 https://doaj.org/article/b028fc29da9a44a3b3a1de3f15cc8ecf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
Minerals, Vol 12, Iss 7, p 800 (2022) |
op_relation |
https://www.mdpi.com/2075-163X/12/7/800 https://doaj.org/toc/2075-163X doi:10.3390/min12070800 2075-163X https://doaj.org/article/b028fc29da9a44a3b3a1de3f15cc8ecf |
op_doi |
https://doi.org/10.3390/min12070800 |
container_title |
Minerals |
container_volume |
12 |
container_issue |
7 |
container_start_page |
800 |
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1787424831734546432 |