ASTER mapping of gypsum deposits of Thumrait region of southern Oman
<p>This study demonstrates the use of ASTER data for the mapping of gypsum deposits and associated geological formations that occurred in the Thumrait region of southern Oman. The measurement of spectra over samples of gypsum in the 1,300–2,500 nm wavelength using a PIMA spectrometer showed th...
محفوظ في:
| المؤلف الرئيسي: | |
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| مؤلفون آخرون: | |
| منشور في: |
2020
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| الموضوعات: | |
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إضافة وسم
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| _version_ | 1864513565154607104 |
|---|---|
| author | Sankaran Rajendran (14152830) |
| author2 | Sobhi Nasir (14152833) |
| author2_role | author |
| author_facet | Sankaran Rajendran (14152830) Sobhi Nasir (14152833) |
| author_role | author |
| dc.creator.none.fl_str_mv | Sankaran Rajendran (14152830) Sobhi Nasir (14152833) |
| dc.date.none.fl_str_mv | 2020-12-03T21:00:00Z |
| dc.identifier.none.fl_str_mv | 10.1111/rge.12245 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/journal_contribution/ASTER__mapping_of_gypsum_deposits_of_Thumrait_region_of_southern_Oman/22258624 |
| dc.rights.none.fl_str_mv | CC BY 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Earth sciences Geochemistry Geology ASTER data, gypsum deposits geological formations Thumrait region Oman |
| dc.title.none.fl_str_mv | ASTER mapping of gypsum deposits of Thumrait region of southern Oman |
| dc.type.none.fl_str_mv | Text Journal contribution info:eu-repo/semantics/publishedVersion text contribution to journal |
| description | <p>This study demonstrates the use of ASTER data for the mapping of gypsum deposits and associated geological formations that occurred in the Thumrait region of southern Oman. The measurement of spectra over samples of gypsum in the 1,300–2,500 nm wavelength using a PIMA spectrometer showed the presence of distinct absorptions at 1400–1600, 1750, 1940, 2,100, and 2,400 nm characteristics to O—H stretching, H<sub>2</sub>O combinations, and S—O bending overtones and stretching, respectively. Studying the unique spectral absorption characters of gypsum samples, we developed a false color composite (FCC) and an image by decorrelation stretch using the spectral bands 7, 3, and 2 of ASTER. The results FCC showed the regions of gypsum occurrences, and the decorrelated image discriminated the gypsum occurrences from other geological formations of the area. The study of surface mineralogy of the region using the VNIR-SWIR bands by the spectral angle mapper method showed the presence of sulfate, carbonate, and clay minerals of the geological formations in the study area. We compared the results of ASTER with the results obtained using spectral bands 12, 8, and 4 of Sentinel-2A processed by the same methods. The study showed that the spectral bands of ASTER can be used for mapping the gypsum and associated geological formations.</p> <h2>Other Information</h2> <p>Published in: Resource Geology<br> License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br> See article on publisher's website: <a href="http://dx.doi.org/10.1111/rge.12245" target="_blank">http://dx.doi.org/10.1111/rge.12245</a></p> |
| eu_rights_str_mv | openAccess |
| id | Manara2_9b010bdd2deeb443ecac607a3fae9e46 |
| identifier_str_mv | 10.1111/rge.12245 |
| network_acronym_str | Manara2 |
| network_name_str | Manara2 |
| oai_identifier_str | oai:figshare.com:article/22258624 |
| publishDate | 2020 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY 4.0 |
| spelling | ASTER mapping of gypsum deposits of Thumrait region of southern OmanSankaran Rajendran (14152830)Sobhi Nasir (14152833)Earth sciencesGeochemistryGeologyASTER data,gypsum depositsgeological formationsThumrait regionOman<p>This study demonstrates the use of ASTER data for the mapping of gypsum deposits and associated geological formations that occurred in the Thumrait region of southern Oman. The measurement of spectra over samples of gypsum in the 1,300–2,500 nm wavelength using a PIMA spectrometer showed the presence of distinct absorptions at 1400–1600, 1750, 1940, 2,100, and 2,400 nm characteristics to O—H stretching, H<sub>2</sub>O combinations, and S—O bending overtones and stretching, respectively. Studying the unique spectral absorption characters of gypsum samples, we developed a false color composite (FCC) and an image by decorrelation stretch using the spectral bands 7, 3, and 2 of ASTER. The results FCC showed the regions of gypsum occurrences, and the decorrelated image discriminated the gypsum occurrences from other geological formations of the area. The study of surface mineralogy of the region using the VNIR-SWIR bands by the spectral angle mapper method showed the presence of sulfate, carbonate, and clay minerals of the geological formations in the study area. We compared the results of ASTER with the results obtained using spectral bands 12, 8, and 4 of Sentinel-2A processed by the same methods. The study showed that the spectral bands of ASTER can be used for mapping the gypsum and associated geological formations.</p> <h2>Other Information</h2> <p>Published in: Resource Geology<br> License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br> See article on publisher's website: <a href="http://dx.doi.org/10.1111/rge.12245" target="_blank">http://dx.doi.org/10.1111/rge.12245</a></p>2020-12-03T21:00:00ZTextJournal contributioninfo:eu-repo/semantics/publishedVersiontextcontribution to journal10.1111/rge.12245https://figshare.com/articles/journal_contribution/ASTER__mapping_of_gypsum_deposits_of_Thumrait_region_of_southern_Oman/22258624CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/222586242020-12-03T21:00:00Z |
| spellingShingle | ASTER mapping of gypsum deposits of Thumrait region of southern Oman Sankaran Rajendran (14152830) Earth sciences Geochemistry Geology ASTER data, gypsum deposits geological formations Thumrait region Oman |
| status_str | publishedVersion |
| title | ASTER mapping of gypsum deposits of Thumrait region of southern Oman |
| title_full | ASTER mapping of gypsum deposits of Thumrait region of southern Oman |
| title_fullStr | ASTER mapping of gypsum deposits of Thumrait region of southern Oman |
| title_full_unstemmed | ASTER mapping of gypsum deposits of Thumrait region of southern Oman |
| title_short | ASTER mapping of gypsum deposits of Thumrait region of southern Oman |
| title_sort | ASTER mapping of gypsum deposits of Thumrait region of southern Oman |
| topic | Earth sciences Geochemistry Geology ASTER data, gypsum deposits geological formations Thumrait region Oman |