Rare earth elements associated with carbonatite–alkaline complexes in western Rajasthan, India: exploration targeting at regional scale
A two-stage fuzzy inference system (FIS) is applied to prospectivity modelling and exploration-target delineation for rare earth element (REE) deposits associated with carbonatite–alkaline complexes in the western part of the state of Rajasthan in India. The design of the FIS and selection of the in...
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ftdoajarticles:oai:doaj.org/article:468fe3ac4d184fcca96d64d67675bbb8 2023-05-15T16:30:17+02:00 Rare earth elements associated with carbonatite–alkaline complexes in western Rajasthan, India: exploration targeting at regional scale M. Aranha A. Porwal M. Sundaralingam I. González-Álvarez A. Markan K. Rao 2022-03-01T00:00:00Z https://doi.org/10.5194/se-13-497-2022 https://doaj.org/article/468fe3ac4d184fcca96d64d67675bbb8 EN eng Copernicus Publications https://se.copernicus.org/articles/13/497/2022/se-13-497-2022.pdf https://doaj.org/toc/1869-9510 https://doaj.org/toc/1869-9529 doi:10.5194/se-13-497-2022 1869-9510 1869-9529 https://doaj.org/article/468fe3ac4d184fcca96d64d67675bbb8 Solid Earth, Vol 13, Pp 497-518 (2022) Geology QE1-996.5 Stratigraphy QE640-699 article 2022 ftdoajarticles https://doi.org/10.5194/se-13-497-2022 2022-12-31T01:39:16Z A two-stage fuzzy inference system (FIS) is applied to prospectivity modelling and exploration-target delineation for rare earth element (REE) deposits associated with carbonatite–alkaline complexes in the western part of the state of Rajasthan in India. The design of the FIS and selection of the input predictor map are guided by a generalised conceptual model of carbonatite–alkaline-complex-related REE mineral systems. In the first stage, three FISs are constructed to map the fertility and favourable geodynamic settings, favourable lithospheric architecture for fluid transportation and favourable shallow crustal (near-surface) emplacement architecture, respectively, for REE deposits in the study area. In the second stage, the outputs of the above FISs are integrated to map the prospectivity of REE deposits in the study area. Stochastic and systemic uncertainties in the output prospectivity maps are estimated to facilitate decision-making regarding the selection of exploration targets. The study led to the identification of prospective targets in the Kamthai–Sarnu-Dandeli and Mundwara regions, where detailed project-scale ground exploration is recommended. Low-confidence targets were identified in the Siwana ring complex region, north and northeast of Sarnu-Dandeli, south of Barmer, and south of Mundwara. Detailed geological mapping and geochemical sampling together with high-resolution magnetic and radiometric surveys are recommended in these areas to increase the level of confidence in the prospectivity of these targets before undertaking project-scale ground exploration. The prospectivity-analysis workflow presented in this paper can be applied to the delineation of exploration targets in geodynamically similar regions globally, such as Afar province (East Africa), Paraná–Etendeka (South America and Africa), Siberia (Russia), East European Craton–Kola (eastern Europe), Central Iapetus (North America, Greenland and the Baltic region) and the pan-superior province (North America). Article in Journal/Newspaper Greenland Siberia Directory of Open Access Journals: DOAJ Articles Greenland Solid Earth 13 3 497 518 |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Geology QE1-996.5 Stratigraphy QE640-699 |
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Geology QE1-996.5 Stratigraphy QE640-699 M. Aranha A. Porwal M. Sundaralingam I. González-Álvarez A. Markan K. Rao Rare earth elements associated with carbonatite–alkaline complexes in western Rajasthan, India: exploration targeting at regional scale |
topic_facet |
Geology QE1-996.5 Stratigraphy QE640-699 |
description |
A two-stage fuzzy inference system (FIS) is applied to prospectivity modelling and exploration-target delineation for rare earth element (REE) deposits associated with carbonatite–alkaline complexes in the western part of the state of Rajasthan in India. The design of the FIS and selection of the input predictor map are guided by a generalised conceptual model of carbonatite–alkaline-complex-related REE mineral systems. In the first stage, three FISs are constructed to map the fertility and favourable geodynamic settings, favourable lithospheric architecture for fluid transportation and favourable shallow crustal (near-surface) emplacement architecture, respectively, for REE deposits in the study area. In the second stage, the outputs of the above FISs are integrated to map the prospectivity of REE deposits in the study area. Stochastic and systemic uncertainties in the output prospectivity maps are estimated to facilitate decision-making regarding the selection of exploration targets. The study led to the identification of prospective targets in the Kamthai–Sarnu-Dandeli and Mundwara regions, where detailed project-scale ground exploration is recommended. Low-confidence targets were identified in the Siwana ring complex region, north and northeast of Sarnu-Dandeli, south of Barmer, and south of Mundwara. Detailed geological mapping and geochemical sampling together with high-resolution magnetic and radiometric surveys are recommended in these areas to increase the level of confidence in the prospectivity of these targets before undertaking project-scale ground exploration. The prospectivity-analysis workflow presented in this paper can be applied to the delineation of exploration targets in geodynamically similar regions globally, such as Afar province (East Africa), Paraná–Etendeka (South America and Africa), Siberia (Russia), East European Craton–Kola (eastern Europe), Central Iapetus (North America, Greenland and the Baltic region) and the pan-superior province (North America). |
format |
Article in Journal/Newspaper |
author |
M. Aranha A. Porwal M. Sundaralingam I. González-Álvarez A. Markan K. Rao |
author_facet |
M. Aranha A. Porwal M. Sundaralingam I. González-Álvarez A. Markan K. Rao |
author_sort |
M. Aranha |
title |
Rare earth elements associated with carbonatite–alkaline complexes in western Rajasthan, India: exploration targeting at regional scale |
title_short |
Rare earth elements associated with carbonatite–alkaline complexes in western Rajasthan, India: exploration targeting at regional scale |
title_full |
Rare earth elements associated with carbonatite–alkaline complexes in western Rajasthan, India: exploration targeting at regional scale |
title_fullStr |
Rare earth elements associated with carbonatite–alkaline complexes in western Rajasthan, India: exploration targeting at regional scale |
title_full_unstemmed |
Rare earth elements associated with carbonatite–alkaline complexes in western Rajasthan, India: exploration targeting at regional scale |
title_sort |
rare earth elements associated with carbonatite–alkaline complexes in western rajasthan, india: exploration targeting at regional scale |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
https://doi.org/10.5194/se-13-497-2022 https://doaj.org/article/468fe3ac4d184fcca96d64d67675bbb8 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Siberia |
genre_facet |
Greenland Siberia |
op_source |
Solid Earth, Vol 13, Pp 497-518 (2022) |
op_relation |
https://se.copernicus.org/articles/13/497/2022/se-13-497-2022.pdf https://doaj.org/toc/1869-9510 https://doaj.org/toc/1869-9529 doi:10.5194/se-13-497-2022 1869-9510 1869-9529 https://doaj.org/article/468fe3ac4d184fcca96d64d67675bbb8 |
op_doi |
https://doi.org/10.5194/se-13-497-2022 |
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Solid Earth |
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13 |
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3 |
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497 |
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518 |
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