- Title
- The role of continental lithosphere in the generation of the Karoo volcanic rocks: evidence from combined Nd-and Sr-isotope studies
- Creator
- Hawkesworth, C J
- Creator
- Marsh, Julian S
- Creator
- Duncan, Andrew R
- Creator
- Erlank, Anthony J
- Creator
- Norry, M J
- Date Issued
- 1984
- Date
- 1984
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/134165
- Identifier
- vital:37080
- Identifier
- https://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetailamp;idt=6453596
- Description
- 143Nd/144Nd, 87Sr/86Sr, Sm and Nd analyses are reported on suites of Karoo volcanic rocks from the four sub-areas of Nuanetsi-north Lebombo, south Lebombo, the Central area, and north-west SWA/Namibia. Only seven (12%) of the samples analysed have positive ENd values similar to those found in the majority of recent mantle-derived rocks. Most of the rest have negative ENd (-1.0 to -17.1) and positive ESr, (+3.0 to +240) and thus must contain at least a contribution from source areas which were both old, and had lower Sm/Nd and higher Rh/Sr ratios than the bulk earth.
- Format
- 14 pages
- Format
- Language
- English
- Relation
- Special Publication Geological Society South Africa
- Relation
- Hawkesworth, C.J., Marsh, J.S., Duncan, A.R., Erlank, A.J. and Norry, M.J., 1984. The role of continental lithosphere in the generation of the Karoo volcanic rocks: evidence from combined Nd-and Sr-isotope studies. Spec. Publ. Geol. Soc. S. Afr., 13, pp. 341-354.
- Relation
- Special Publication Geological Society South Africa number 13 341 354 1984 0367-5335
- Rights
- Authors
- Rights
- Use of this resource is governed by the terms and conditions of the Author
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