gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1994.58A.1.211 High Precision ⁸⁷Sr/⁸⁶Sr Measurements on Foraminifera from the Equatorial Pacific and Indian Oceans: The Search for Climate Related Seawater ⁸⁷Sr/⁸⁶Sr Cycles Henderson G. M. Martel D. J. O'Nions R. K. Department of Earth Sciences, Cambridge University, Downing Site, Cambridge, CB2 3EQ, U.K. (e-mail: gmhl6@esc.cam.ac.uk) Shackleton N. J. Godwin Labs, Cambridge University, Cambridge, U.K. 8 1994 58A 1 404 405 Copyright © 1994, The Mineralogical Society 1994