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Modelling the architecture of distal sand-rich lobe deposits : an example from Fan 2, Skoorsteenberg Formation, Tanqua Karoo, South Africa
MSc
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
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Stellenbosch : University of Stellenbosch
2009
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| _version_ | 1867614109772546048 |
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| access_status_str | Open Access |
| author | Steyn, Rochelle |
| author2 | Wickens, H. de V. |
| author_browse | Steyn, Rochelle Wickens, H. de V. |
| author_facet | Wickens, H. de V. Steyn, Rochelle |
| author_sort | Steyn, Rochelle |
| collection | Thesis |
| dc_rights_str_mv | University of Stellenbosch |
| description | MSc |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/2608 |
| institution | Stellenbosch University (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:46:49.061Z |
| 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:10019.1/2608 Modelling the architecture of distal sand-rich lobe deposits : an example from Fan 2, Skoorsteenberg Formation, Tanqua Karoo, South Africa Steyn, Rochelle Wickens, H. de V. Hodgson, D. University of Stellenbosch. Faculty of Science. Dept. of Earth Sciences. Tanqua Karoo Co-genetic debrites Middle Fan 2 Dissertations -- Geology Theses -- Geology Submarine fans -- South Africa Turbidites -- South Africa Geology, Geography and Environmental Studies MSc Thesis (MSc (Earth Sciences))—University of Stellenbosch, 2009. Fan 2, one of five submarine fan systems of the Tanqua fan complex in the south-western Karoo Basin, South Africa, is subdivided into Lower, Middle and Upper units. Here, detailed analysis of the internal architecture and distribution of lithofacies associations of Middle Fan 2 facilitated the 3-D visualisation of the sedimentological and stratigraphical changes towards the pinch-out. Middle Fan 2 is interpreted to be a lower-fan, sand-rich terminal lobe, comprising three sandstone-lobe elements, separated by two siltstone interlobe elements. It is fed by a distributary channel that is hypothetically positioned to the west-southwest of the study area. The sandstone-lobe elements pinch out downdip to the north-east and updip to the southsouthwest in the study area. The consecutive pinch out of lobe elements to the north-east indicates a progradational stacking pattern similar to the entire lobe complex. Palaeocurrent analysis and the interpretation of isopach maps indicate that the transport direction of Middle Fan 2 was in a north-easterly direction. The fringes of the lobe and the distribution of internal elements (channels, amalgamated sheets and sheets) show a finger-like geometry in plan-view, in contrast to simple radial-lobe bodies that are commonly envisaged. 2009-02-17T07:07:43Z 2010-06-01T08:53:33Z 2009-02-17T07:07:43Z 2010-06-01T08:53:33Z 2009-03 Thesis http://hdl.handle.net/10019.1/2608 en University of Stellenbosch application/pdf application/pdf application/pdf application/pdf Stellenbosch : University of Stellenbosch |
| spellingShingle | Tanqua Karoo Co-genetic debrites Middle Fan 2 Dissertations -- Geology Theses -- Geology Submarine fans -- South Africa Turbidites -- South Africa Geology, Geography and Environmental Studies Steyn, Rochelle Modelling the architecture of distal sand-rich lobe deposits : an example from Fan 2, Skoorsteenberg Formation, Tanqua Karoo, South Africa |
| title | Modelling the architecture of distal sand-rich lobe deposits : an example from Fan 2, Skoorsteenberg Formation, Tanqua Karoo, South Africa |
| title_full | Modelling the architecture of distal sand-rich lobe deposits : an example from Fan 2, Skoorsteenberg Formation, Tanqua Karoo, South Africa |
| title_fullStr | Modelling the architecture of distal sand-rich lobe deposits : an example from Fan 2, Skoorsteenberg Formation, Tanqua Karoo, South Africa |
| title_full_unstemmed | Modelling the architecture of distal sand-rich lobe deposits : an example from Fan 2, Skoorsteenberg Formation, Tanqua Karoo, South Africa |
| title_short | Modelling the architecture of distal sand-rich lobe deposits : an example from Fan 2, Skoorsteenberg Formation, Tanqua Karoo, South Africa |
| title_sort | modelling the architecture of distal sand rich lobe deposits an example from fan 2 skoorsteenberg formation tanqua karoo south africa |
| topic | Tanqua Karoo Co-genetic debrites Middle Fan 2 Dissertations -- Geology Theses -- Geology Submarine fans -- South Africa Turbidites -- South Africa Geology, Geography and Environmental Studies |
| url | http://hdl.handle.net/10019.1/2608 |
| work_keys_str_mv | AT steynrochelle modellingthearchitectureofdistalsandrichlobedepositsanexamplefromfan2skoorsteenbergformationtanquakaroosouthafrica |