THE OORLOGSENDE PORPHYRY MEMBER, SOUTH WEST AFRICA/ NAMIBIA: ITS AGE AND REGIONAL SETTING
THE OORLOGSENDE PORPHYRY MEMBER, SOUTH WEST AFRICA/ NAMIBIA: ITS AGE AND REGIONAL SETTING
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西南部非洲/纳米比亚 OORLOGSENDE 斑岩成员:其年龄和区域背景
DOI:
10.1144/0016-764902-087
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发表时间:
1985
影响因子:
2.7
通讯作者:
W. Hegenberger
中科院分区:
文献类型:
--
作者:
W. Hegenberger
The age of 1094 +18 -20 m.y. of the Oorlogsende Porphyry (Area 2120) supports correlation with the Nuckopf Formation, an equivalent of the Sinclair Sequence. The rocks form a tectonic sliver, and their position suggests that the southern Damara thrust belt continues into the Epukiro area. Dependent on whether the Kgwebe formation in Botswana is considered coeval with either the Eskadron Formation (Witvlei area, Gobabis District) or with the Nuckopf Formation of central South West Africa/Namibia, the correlation of the Ghanzi Group in Botswana with only the Nosib Group or with both the Eskadron Formation and the Nosib Group of South West Africa/Namibia is implied. UITTREKSEL Die ouderdom van 1094 +18 -20 m.j. van die Oorlogsendeporfier (Gebied 2120) steun korrelasie met die For masie Nuckopf, ‘n ekwiwalent van die Opeenvolging Sinclair. Die gesteentes vorm ‘n tektoniese wig en hul posisie dui aan dat die suidelike Damara-oorskuiwingsone in die Epukiro-gebied voortsit. Afhanklik daarvan of die Formasie Kgwebe in Botswana as gelyk oud beskou word met of die Formasie Eksadron (Witvleigebied, Distrik Gobabis) of die Formasie Nuckopf van die sentrale Suidwes-Afrika/Namibie, word die korrelasie van die Groep Ghanzi in Botswana met alleen die Groep Nosib, of met albei die Formasie Eskadron en die Groep Nosib van Suidwes-Afrika/Namibie aangedui.