Promotion of the Etendeka Formation to Group status: a new integrated stratigraphy

Milner, Simon C; Duncan, Andrew R; Ewart, A; Marsh, Julian S

Title: Promotion of the Etendeka Formation to Group status: a new integrated stratigraphy
Creator: Milner, Simon C
Creator: Duncan, Andrew R
Creator: Ewart, A
Creator: Marsh, Julian S
Date Issued: 1994
Date: 1994
Type: text
Type: article
Identifier: http://hdl.handle.net/10962/145482
Identifier: vital:38442
Description: The Etendeka volcanic rocks of northwestem Namibia are currently defined as the upper part of the Karoo Sequence in Namibia and have thus been represented as stratigraphically equivalent to the volcanic rocks of the Karoo Sequence in South Africa, Botswana, Lesotho, Swaziland and Zimbabwe. However, the Etendeka volcanic rocks (130-135 Ma) are considerably younger than those of the Karoo Sequence (180-190 Ma) in the areas mentioned above. They are compositionally distinct from Karoo volcanic rocks, and constitute an eastern portion of the Parana Igneous Province of Brazil. Stratigraphic studies have shown the Etendeka Formation to be made up of several definable volcanic successions and it is suggested that these successions now be formally recognized as Formations within an Etendeka Group which itself should no longer be part of the Karoo Sequence. Prominent quartz latite units and sequences of basalt flows are defined as Members within the new Formations.
Format: 7 pages
Format: pdf
Language: English
Relation: Communications of the Geological Survey of Namibia
Relation: Milner, S.C., Duncan, A.R., Ewart, A. and Marsh, J.S., 1994. Promotion of the Etendeka Formation to Group status: A new integrated stratigraphy. Communications of the Geological Survey of Namibia, 9, pp.5-11.
Relation: Communications of the Geological Survey of Namibia volume 9 5 11 1994 1026-2954
Rights: Author
Rights: Use of this resource is governed by the terms and conditions of the Author

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