Multi-stage modification of the mantle lithosphere beneath the Slave craton: evidence from an unusual suite of zircon-bearing eclogite xenoliths entrained in the Jericho kimberlite, Canada - Heaman, L.M.; Creaser, R.A.; Cookenboo, H.O.; Chacko, T. (International Kimberlite Conference: Extended Abstracts, 2003)