With apologies for multiple postings, please find below information about Fourth International Workshop on Orogenic Lherzolites and Mantle Processes, Samani (Hokkaido, Japan), August 26-September 3, 2002 The Fourth International Workshop on Orogenic Lherzolites and Mantle Processes will be held from August 26 to September 3, 2002 at Samani, Hokkaido, Japan. The main aim of the Workshop Series is to present new data on mantle-derived ultramafic and related rocks (orogenic lherzolites, ophiolitic peridotites, xenoliths in volcanic rocks), and to discuss how data from diverse disciplines including experimental and theoretical, geological, geochemical and geophysical approaches can be used to understand mantle processes. The Samani Workshop will place special emphasis on research topics such as: (1) origin of heterogeneity on various scales as documented in mantle derived ultramafic rocks with particular emphasis on mechanisms for forming layered structures; (2) mechanisms of melt production and modification of partial melts during melt segregation, melt transport, and mantle-melt reactions; (3) rheology of solid and partially molten mantle and large scale flow dynamics in the mantle; (4) recycling and processing of lithosphere into the mantle on local and global scales and the geochemical evolution of the Earth's mantle. The Samani Workshop will consist of a three-day indoor meeting (August 29-31) coupled with a two-day field excursion in the Horoman peridotite. The same field trip will be given before (August 27-28) and after (September 1-2) the indoor meeting. Scientific presentations will be made in oral and poster sessions. The indoor meeting will be held in the Town Hall of Samani, which is near the Horoman peridotite thereby facilitating easy access to the complex. More information and details of the trips, including approximate cost will be given on the Workshop WWW pages : http://earth.s.kanazawa-u.ac.jp/LherzoliteWorkshop2002/ Tomoaki Morishita ******************************************* Dr. Tomoaki Morishita Research Assistant Department of Earth Sciences, Kanazawa University, Kanazawa 920-1192, Japan email: [log in to unmask] tel: +81 (0) 76 264 5723 (Dep. Earth Sci.) +81 (0) 76 264 5979 (Office) fax: +81 (0) 76 264 5746 *******************************************