gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1998.62A.3.202 Gas Hydrate Modelling in the Lower Palaeozoic and the Onset and Termination of Glacial Events Wilde P. Pangloss Foundation, Berkeley, California, 94709, USA Quinby-Hunt M. S. Environmental Energy Technologies Division, Lawrence Berkeley Laboratory, Berkeley, California, 94720, USA 1998 62A 3 1658 1659 Copyright © 1998, The Mineralogical Society 1998