The Pyroclastic sequences of the paresis igneous complex (Namibia) select="/dri:document/dri:meta/dri:pageMeta/dri:metadata[@element='title']/node()"/>
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| dc.contributor.author | Roesener H. | en_US |
| dc.date.accessioned | 2013-07-02T14:10:31Z | |
| dc.date.available | 2013-07-02T14:10:31Z | |
| dc.date.issued | 19891000 | en_US |
| dc.identifier.uri | http://hdl.handle.net/11070.1/4354 | |
| dc.description.abstract | Abstract by author: | en_US |
| dc.description.abstract | The Paresis Igneous Complex is an anorogenic alkaline ring complex which is situated in the central north-western part of Namibia. The Complex has been emplaced along north-east trending lineaments during the Gondwana rifting | en_US |
| dc.description.abstract | The Complex was investigated in detail by Siedner in 1963, however the renewed interest in alkaline ring complexes has prompted a re-investigation of the volcanics, and a re-interpretation of the volcanic history | en_US |
| dc.description.abstract | The igneous history of the Paresis Complex can be divided into an early volcanic phase and a later intrusive phase. The early volcanic phase is subdivided into three cycles, namely (A) Feldspar rhyolite (B) Quartz feldspar porphyry (C) Comendite. Cycles (A) and (C) were followed by caldera collapse. The later intrusive phase comprises syenites, microgranites and feldspathoidal rocks | en_US |
| dc.description.abstract | The volcanic rocks are predominantly pyroclastic flow deposits. The debris flow deposits are associated with the quartz porphyry cycle and have been previously interpreted as airfall agglomerates | en_US |
| dc.format.extent | 43 p | en_US |
| dc.format.extent | ill | en_US |
| dc.format.extent | 1 map in folder | en_US |
| dc.language.iso | eng | en_US |
| dc.title | The Pyroclastic sequences of the paresis igneous complex (Namibia) | en_US |
| dc.type | thesis | en_US |
| dc.identifier.isis | F013-199902150009727 | en_US |
| dc.description.degree | Grahamstown | en_US |
| dc.description.degree | South Africa | en_US |
| dc.description.degree | Rhodes University | en_US |
| dc.description.degree | epartment Geology | en_US |
| dc.masterFileNumber | 2676 | en_US |
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