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