Buchdenkmal, granite boulder (natural monument) in the Pechgraben near the village of Grossraming (Upper Austria) with an inscription in honour of the German geologist Leopold von Buch (1774-1853). From the geological point of view the existence of granite in the Alpine foothills on the border between the Limestone Alps and the flysch zone is an exceptional feature. In the past it was assumed that the Buchdenkmal granite was an elevation of the Bohemian Massif; now it is evident that it is part of a thrust klippe.
Literature#R. W. Widder, Neuinterpretation des Buchdenkmal-Granites, 1988.