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Stratigraphic evolution and characteristics of lobes : a high-resolution study of Fan 3, Tanqua Karoo, South Africa
Thesis (MSc (Earth Sciences))--University of Stellenbosch, 2009.
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| Format: | Thesis |
| Language: | English |
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Stellenbosch : University of Stellenbosch
2009
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| _version_ | 1867613803315724288 |
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| access_status_str | Open Access |
| author | Neethling, J. M. |
| author2 | Wickens, H. de V. |
| author_browse | Neethling, J. M. Wickens, H. de V. |
| author_facet | Wickens, H. de V. Neethling, J. M. |
| author_sort | Neethling, J. M. |
| collection | Thesis |
| dc_rights_str_mv | University of Stellenbosch |
| description | Thesis (MSc (Earth Sciences))--University of Stellenbosch, 2009. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/2249 |
| institution | Stellenbosch University (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:41:57.021Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2009 |
| publishDateRange | 2009 |
| publishDateSort | 2009 |
| publisher | Stellenbosch : University of Stellenbosch |
| publisherStr | Stellenbosch : University of Stellenbosch |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/2249 Stratigraphic evolution and characteristics of lobes : a high-resolution study of Fan 3, Tanqua Karoo, South Africa Neethling, J. M. Wickens, H. de V. Hodgson, D. M. University of Stellenbosch. Faculty of Science. Dept. of Earth Sciences. Lobes Axial zones Finger-shaped deposits Dissertations -- Geology Theses -- Geology Formations (Geology) -- South Africa. Geology, Stratigraphic Submarine fans -- South Africa Thesis (MSc (Earth Sciences))--University of Stellenbosch, 2009. Fan 3 is one of four basin-floor fans that form part of the Tanqua Karoo Fan Complex in South Africa. It can be subdivided into several sandstone lobes, based on the presence of thin-bedded siltstone intervals above and below major sandstone packages. Six lobes are identified in the mid fan section, as well as two older groups of thin, low-volume turbidite deposits at the base. Some of the lobes are further divided into an upper and lower lobe-element based on depositional behaviour. The volumetrically and spatially larger lobes have a finger-like appearance in plan view, which is attributed to multiple lobe-scale axial zones. This is especially visible towards the eastern margins of Lobes 2, 4 and 5. The stratigraphy and facies distribution are presented on several 2D panels. Computer generated isopach maps are presented for each lobe, lobe-element and interlobe unit. Autogenic control on the depositional pattern of the Fan 3 lobe complex was inferred from the palaeoflow patterns of the composing lobes and lobe-elements. The majority of the lobes show a north-eastern palaeoflow direction in the south, with a gradual westward shift in the north. Inferred controls are basin-floor topography, the presence of pre-existing lobes, and characteristics of the depositional flow, such strength, density, sediment load, palaeoflow direction. 2009-02-17T10:23:25Z 2010-06-01T08:44:25Z 2009-02-17T10:23:25Z 2010-06-01T08:44:25Z 2009-03 Thesis http://hdl.handle.net/10019.1/2249 en University of Stellenbosch application/pdf application/pdf application/pdf application/pdf application/pdf application/pdf Stellenbosch : University of Stellenbosch |
| spellingShingle | Lobes Axial zones Finger-shaped deposits Dissertations -- Geology Theses -- Geology Formations (Geology) -- South Africa. Geology, Stratigraphic Submarine fans -- South Africa Neethling, J. M. Stratigraphic evolution and characteristics of lobes : a high-resolution study of Fan 3, Tanqua Karoo, South Africa |
| title | Stratigraphic evolution and characteristics of lobes : a high-resolution study of Fan 3, Tanqua Karoo, South Africa |
| title_full | Stratigraphic evolution and characteristics of lobes : a high-resolution study of Fan 3, Tanqua Karoo, South Africa |
| title_fullStr | Stratigraphic evolution and characteristics of lobes : a high-resolution study of Fan 3, Tanqua Karoo, South Africa |
| title_full_unstemmed | Stratigraphic evolution and characteristics of lobes : a high-resolution study of Fan 3, Tanqua Karoo, South Africa |
| title_short | Stratigraphic evolution and characteristics of lobes : a high-resolution study of Fan 3, Tanqua Karoo, South Africa |
| title_sort | stratigraphic evolution and characteristics of lobes a high resolution study of fan 3 tanqua karoo south africa |
| topic | Lobes Axial zones Finger-shaped deposits Dissertations -- Geology Theses -- Geology Formations (Geology) -- South Africa. Geology, Stratigraphic Submarine fans -- South Africa |
| url | http://hdl.handle.net/10019.1/2249 |
| work_keys_str_mv | AT neethlingjm stratigraphicevolutionandcharacteristicsoflobesahighresolutionstudyoffan3tanquakaroosouthafrica |