U-Pb geochronology, Sr- and Nd-isotope compositions of groundmass perovskite from the Chidliak and Qilaq kimberlites, Baffin Island, Nunavut - Heaman, L.M.; Grütter, H.D.; Pell, J.; Holmes, P.; Grenon, H. (International Kimberlite Conference: Extended Abstracts, 2012)