2 GEOLOGICAL MEMOIRS. 



ward dip. Generally the eocene deposits of North-eastern Carinthia 

 are of no considerable extent, and their thickness does not exceed 

 800 feet. 



The cretaceous deposits occupy a far more considerable range in 

 this region. M. F. von Rosthorn was the first who referred the 

 Rudista-beds between Althofen and the Mannsberg to the Cretaceous 

 formation. M. M. Lipoid found confirmation of this both in the 

 Rudista discovered at Mount Calvary near Althofen, on the Zenns- 

 berg, and on the Reinberg, near St. Paul ; and in the petrogra- 

 phical agreement of the Althofen strata with the known cretaceous 

 rocks of Upper Austria, Salzburg and Styria, — especially with the 

 cretaceous marble of the Untersberg near Salzburg. 



Limestones, in beds 3 feet thick, predominate among the creta- 

 ceous deposits of N. E. Carinthia, marls and sandstones also occur- 

 ring. Near the base of the formation, breccias of calcareous or 

 schistose rocks are met with. 



Besides the Rudista, some species of Corals and undetermined 

 specimens of Bivalves were found in the limestone by M. Lipoid. 



The range of hills separating the valleys of Goerschitz and the 

 Silberbach, and running from Althofen and Guttaring (on the north) 

 to Eberstein and Mannsberg (on the south), is wholly composed of 

 cretaceous rocks. Isolated portions occur at the Zennsberg, N.E. 

 of St. Georgen on the Langsee, S. of Silberegg, near M. Wolschert 

 on the right bank of the river Gurk, and on the left bank of this 

 river at Wieting and Unter St. Paul in the Goerschitz valley. Besides 

 at these localities, cretaceous rocks appear in the lower Lavant 

 Valley at the Reinberg, E. of St. Paul, near St. Martin, S.W. of 

 St. Paul (where they reach as high as the pass leading to Eis), and 

 between Lavamiind and TJnter-Drauburg, near Rabenstein, in the 

 ghape of rocky cliffs rising amidst the surrounding gravels. 



Cretaceous strata have been found resting both on "Werfen and 

 Guttenstein strata (Unter St. Paul, Mannsberg, Zennsberg, St. Paul 

 in the Lavant valley), and immediately on grauwacke-slate and argil- 

 laceous mica-schist (Wieting and Althofen). M. Lipoid estimates 

 the thickness of the cretaceous deposits as not exceeding that of the 

 eocene (800 feet). [Count M.] 



On the Ferriferous Deposits o/Huttenberg in Carinthia. 

 By MM. Fred. Munichdorfer and M. F. Lipold. 



[Proceed. Imp. Geol. Instit. Vienna, March 13, 1855.] 



The rocks of the district are gneiss, mica-schist, argillaceous mica- 

 schist, clay-slate, crystalline limestone, amphibolic gneiss and slate, 

 and eclogite. Mica-schist predominates near the mountain ; and cal- 

 careous and amphibolic rocks appear only as subordinate layers in 

 it. The calcareous beds are of particular importance, the iron- 

 ores being exclusively confined to them. The gneiss includes one of 

 these beds, and there are four in the mica-schist. They are parallel 



