gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1994.58A.2.193 3-D ⁴⁰Ar-³⁹Ar Geochronology in the Paraná Flood Basalt Province Stewart K. Kelley S. Turner S. Hawkesworth C. Dept. of Earth Sciences, The Open University, Milton Keynes, MK7 6AA, UK Mantovani M. Departamento de Geofisico, Instítuto Astronmico e Geofísico, Universidade de So Paulo Caixa Postal 30627, 01051 So Paulo SP, Brazil August–September 1994 58A 2 879 880 Copyright © 1994, The Mineralogical Society 1994