122 
ECONOMIC GEOLOGY 
through the osefi Shaft, which showed a thrust plane by which 
Paleozoic and Lower Triassic rocks have been pushed on to 
the Middle Trias. The overthrust bed is nearly half a mile 
wide, and must have been moved for more than that distance. 
DBr 
re 
DBr 
ent IAT 
Eocene- Fiv-~- 
(¢ 
Upper Trias - St.Cassian Beds 
ERE 
t 
& 
DBr 
Sa 
Mid Trias 
{Dolomite & dolomitic Breccia) 
Muschelkalk 
DBr DBn 
Ee, 
C - Rudi I fas Low Trias - Werfen Bed 
retaceous - Rudistenkal UpperJrias Wengen Beds Car oe as v nt 3 2s 
Fie. 37.—THue Ipria MERCURY Mings. 
Geological map of the district around the Idria Mercury Mines (after 
Kossmat) ; ee, Eocene-Flysch ; cc, Cretaceous- Rudistenkalk ; t3 t3 
Upper Trias-St, Cassian Beds : Upper Trias-Wengen Beds; Dbr., 
Mid. Trias (Dolomite and Dolomitic Breccia) Muschalkalk ; dotted, 
Low. Trias-Werfen Beds and Carboniferous-Gailthal Beds; . , | 
Faults. 
Lipold’s work has been in general confirmed by the later 
accounts of the Idria field by Kossmat (tbid., xlix, 1899, pp. 
259-96). The rocks belong to the Carboniferous, Trias, 
Cretaceous, and Eocene Systems. In the Josefi Shaft the