Report of a meeting of the Tethyan Working Group, held at the University of Edinburgh, on 26–27 April 1989. The conveners were P. D. Clift, G. Jones, J. E. Dixon and A. H. F. Robertson.
This was the latest in a long established series of Tethyan Working Group meetings, the purpose of which is to provide a forum for the presentation of recent research work on the Tethyan realm. It has become apparent that only by the use of an integrated variety of geological techniques, can major advances be made in our understanding of this complex orogenic belt. The meeting reflected this approach by tackling various aspects of Tethyan tectonostratigraphic development. The Working Group was attended by about 40 geologists and geophysicists, with several from collaborating continental European laboratories.
The first talk on the Greek area was given by A. H. F. Robertson (Edinburgh University), who documented a two stage ophiolite emplacement history on the island of Ewia, which occupies a critical tectonic position in central E. Greece. Using a multidisciplinary approach he discussed the probable root zone of a Jurassic, supra-subduction zone ophiolite and presented new evidence for the formation of late Cretaceous oceanic crust in the area. P. D. Clift (Edinburgh University) continued this theme, with a description of the various tectonic units within the Argolis area of southern Greece. In the light of field geological and palaeomagnetic work he demonstrated a two stage ocean basin closure history in this area and summarized evidence of spreading in a