stripes
Lying beneath basalts at the bottom of the Karoo succession in the northern Lebombo, some 160 km south of Mashikiri (No. 151-00-002), are nephelinites that extend for about 20 km to the north and south of the Olifants River. The general description of the Mashikiri nephelinites applies also to these rocks.
BRISTOW, J.W. 1984. Nephelinites of the North Lebombo and south-east Zimbabwe. Special Publication, Geological Society of South Africa, 13: 87-104.BRISTOW, J.W., ALLSOPP, H.L., ERLANK, A.J., MARSH, J.S. and ARMSTRONG, R.A. 1984. Strontium isotope characterization of Karoo volcanic rocks. Special Publication, Geological Society of South Africa, 13: 295-329.CLEVERLY, R.W. and BRISTOW, J.W. 1979. Revised volcanic stratigraphy of the Lebombo monocline. Transactions of the Geological Society of South Africa, 82: 227-30.DUNCAN, A.R., ERLANK, A.J. and MARSH, J.S. 1984. Regional geochemistry of the Karoo igneous province. Special Publication, Geological Society of South Africa, 13: 355-88.EALES, H.V., MARSH, J.S. and COX, K.G. 1984. The Karoo igneous province: an introduction. Special Publication, Geological Society of South Africa, 13: 1-26.
