00485nas a2200073   4500008003900000245026000039210006900299856004300368       1998                          d00aBLACK, S., MACDONALD, R., BARREIRO, B.A., DUNKLEY, P.N. and SMITH, M. 1998. Open system alkaline magmatism in northern Kenya: evidence from U-series disequilibrium and radiogenic isotopes. Contributions to Mineralogy and Petrology, 131: 364-78.DUNKLEY, P.0 aBLACK S MACDONALD R BARREIRO BA DUNKLEY PN and SMITH M 1998 Open  uhttps://alkcarb.myrocks.info/node/7073