Downloaded from http://jgs.lyellcollection.org/ by guest on October 1, 2021 Journal of the Geological Society, London, Vol. 150, 1993, pp. 609-610. Printed in Northern Ireland SOCIETY AWARDS FOR 1993 WOLLASTON MEDAL---S. Epstein MURCHISON MEDAL--A. B. Watts for his outstanding contributions in the discipline of stable isotope for his fundamental and influential work in marine geology and geochemistry geophysics LYELL MEDAL--M. R. Leeder WILLIAM SMITH MEDAL--E. Hoek for his acclaimed studies of physical sedimentary processes and the for his international status as a key contributor to the science of tectonic controls of clastic sedimentation rock mechanics MAJOR JOHN SACHEVERALL A'DEANE COKE AND MAJOR EDWARD D'EWES FITZGERALD COKE MEDALS D. J. BlundeH P. Westbroek for his achievements in the field of crustal seismology, notably in for his trans-disciplinary, strikingly innovative contributions in the deep seismic profiling, combined with his impressive record of field of biogeochemistry administrative contributions to the Earth Science community 609 Downloaded from http://jgs.lyellcollection.org/ by guest on October 1, 2021 610 SOCIETY AWARDS FOR 1993 BIGSBY MEDAL--J. A. Pearce PRESTWICH MEDAL--H. Elderlield for his achievements as a recognized leader in igneous geochemistry for his outstanding work in the field of marine geochemistry SUE TYLER FRIEDMAN MEDAL--T. G. Vallance for the excellence of his research record and his influential role in the study of the history of geology R. H WORTH PRIZE P. Destombes for his exceptional achievements as an amateur palaeontologist, most notable in the field of Tethyan fauna WOLLASTON FUND MURCHISON FUND D. A. C. Manning for his influential contributions in ore M. A. Lovell for his innovative contributions to borehole-logging geochemistry. techniques LYELL FUND WILLIAM SMITH FUND R. L. Gawthorpe for his leading expertise in the dynamics of A. Hurst for his impressive contributions to oil-reservoir geology sedimentary systems PRESIDENT'S AWARD D. Pirrie for his impressive and wide-ranging contributions to sedimentology, stratigraphy and palaeoecology .