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Excursion of the Geological Society of France

Nature volume 142, page 699 (15 October 1938) | Download Citation



A. R. LILLIE writes: The reunion extraordinaire of the Societo Gologique de France was held this year on September 10-17 in the southern French Alps. There Was an attendance of ninety-four members, who came from the following countries: France, Belgium, Britain, Czechoslovakia, India, Poland, Spain and Switzerland. The excursion, under the guidance of Profs. Gignoux, Lory, Moret, Raguin and Schneegans, was well organized and was a useful introduction to a territory of fascinating tectonic problems. The party met at Grenoble, where M. Gignoux outlined the objects of the meeting, and then went by motor-car to the Dvoluy. M. Lory there demonstrated the considerable extent of the pre-Senonian folding which he has elucidated during many years work. From Gap as centre, during the following three days, the excursion was conducted in localities situated in the ultra-Dauphinois zone and the sub-Briangonnais zone at Ancelle and in the Ubaye valley. The recent work done in this region, particularly that of Schneegans in the massif of the Grand Morgon, is very impressive in view of the complicated tectonics and the mountainous nature of the ground. Moving on to Briangon for the last three days of the excursion, the party had the opportunity of seeing something of the tectonics in the Briangonnais zone. The final day was spent at the col du Galibier, where all the tectonic elements are to be seen continued northwards into Savoie. An excellent memoire with numerous plates had been prepared by MM. Gignoux and Moret in collaboration with Lory and Schneegans, and a copy was presented to each participant. This memoire, entitled “Description Gologique du Bassin Suprieur de la Durance”, appears to include much hitherto unpublished work, and should prove a valuable summary for geologists interested in Alpine tectonics.

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