Geomorphology of the upper Mkhomazi River basin, KwaZulu-Natal, South Africa, with emphasis on late Pleistocene colluvial deposits
We present a 1:50 000 scale geomorphological map of the upper Mkhomazi River basin, located in the foothills of the Drakensberg mountains in KwaZulu-Natal Province, South Africa. The sub-horizontal strata of the Permo-Triassic Beaufort Group forms plateau interfluves with a concave valley slope morp...
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doaj-131c3cfa86754e429952fe5ab07001bd2021-07-15T13:10:34ZengTaylor & Francis GroupJournal of Maps1744-56472021-06-0117351610.1080/17445647.2020.17904351790435Geomorphology of the upper Mkhomazi River basin, KwaZulu-Natal, South Africa, with emphasis on late Pleistocene colluvial depositsAlberto Bosino0Alice Bernini1Greg A. Botha2Greta Bonacina3Luisa Pellegrini4Adel Omran5Volker Hochschild6Christian Sommer7Michael Maerker8Department of Earth and Environmental Sciences, Pavia UniversityDepartment of Earth and Environmental Sciences, Pavia UniversityCouncil for GeoscienceDepartment of Earth and Environmental Sciences, Pavia UniversityDepartment of Earth and Environmental Sciences, Pavia UniversityDepartment of Geography, Tübingen UniversityDepartment of Geography, Tübingen UniversityDepartment of Geography, Tübingen UniversityDepartment of Earth and Environmental Sciences, Pavia UniversityWe present a 1:50 000 scale geomorphological map of the upper Mkhomazi River basin, located in the foothills of the Drakensberg mountains in KwaZulu-Natal Province, South Africa. The sub-horizontal strata of the Permo-Triassic Beaufort Group forms plateau interfluves with a concave valley slope morphology. Locally, thick sequences of late Pleistocene colluvial deposits and associated buried paleosols (Masotcheni Formation) infill first-order tributary stream valleys and extend across the adjacent lower slopes. Surface runoff processes preferentially incise into the poorly consolidated, highly erodible sediments causing severe gully erosion that is responsible for widespread land degradation and desertification phenomena. The main purpose of this work is to derive a geomorphological map of the study area focussing on the erosional landforms to understand their spatial distribution and their relation to the colluvial deposits. Finally, a local and regional stratigraphic correlation of colluvial deposits and associated buried palaeosol profiles is proposed.http://dx.doi.org/10.1080/17445647.2020.1790435geomorphological mapkwazulu-natal (rsa)gully erosionrill-interrill erosionriver terracesmasotcheni formation |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Alberto Bosino Alice Bernini Greg A. Botha Greta Bonacina Luisa Pellegrini Adel Omran Volker Hochschild Christian Sommer Michael Maerker |
spellingShingle |
Alberto Bosino Alice Bernini Greg A. Botha Greta Bonacina Luisa Pellegrini Adel Omran Volker Hochschild Christian Sommer Michael Maerker Geomorphology of the upper Mkhomazi River basin, KwaZulu-Natal, South Africa, with emphasis on late Pleistocene colluvial deposits Journal of Maps geomorphological map kwazulu-natal (rsa) gully erosion rill-interrill erosion river terraces masotcheni formation |
author_facet |
Alberto Bosino Alice Bernini Greg A. Botha Greta Bonacina Luisa Pellegrini Adel Omran Volker Hochschild Christian Sommer Michael Maerker |
author_sort |
Alberto Bosino |
title |
Geomorphology of the upper Mkhomazi River basin, KwaZulu-Natal, South Africa, with emphasis on late Pleistocene colluvial deposits |
title_short |
Geomorphology of the upper Mkhomazi River basin, KwaZulu-Natal, South Africa, with emphasis on late Pleistocene colluvial deposits |
title_full |
Geomorphology of the upper Mkhomazi River basin, KwaZulu-Natal, South Africa, with emphasis on late Pleistocene colluvial deposits |
title_fullStr |
Geomorphology of the upper Mkhomazi River basin, KwaZulu-Natal, South Africa, with emphasis on late Pleistocene colluvial deposits |
title_full_unstemmed |
Geomorphology of the upper Mkhomazi River basin, KwaZulu-Natal, South Africa, with emphasis on late Pleistocene colluvial deposits |
title_sort |
geomorphology of the upper mkhomazi river basin, kwazulu-natal, south africa, with emphasis on late pleistocene colluvial deposits |
publisher |
Taylor & Francis Group |
series |
Journal of Maps |
issn |
1744-5647 |
publishDate |
2021-06-01 |
description |
We present a 1:50 000 scale geomorphological map of the upper Mkhomazi River basin, located in the foothills of the Drakensberg mountains in KwaZulu-Natal Province, South Africa. The sub-horizontal strata of the Permo-Triassic Beaufort Group forms plateau interfluves with a concave valley slope morphology. Locally, thick sequences of late Pleistocene colluvial deposits and associated buried paleosols (Masotcheni Formation) infill first-order tributary stream valleys and extend across the adjacent lower slopes. Surface runoff processes preferentially incise into the poorly consolidated, highly erodible sediments causing severe gully erosion that is responsible for widespread land degradation and desertification phenomena. The main purpose of this work is to derive a geomorphological map of the study area focussing on the erosional landforms to understand their spatial distribution and their relation to the colluvial deposits. Finally, a local and regional stratigraphic correlation of colluvial deposits and associated buried palaeosol profiles is proposed. |
topic |
geomorphological map kwazulu-natal (rsa) gully erosion rill-interrill erosion river terraces masotcheni formation |
url |
http://dx.doi.org/10.1080/17445647.2020.1790435 |
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