Sapropelite
Seefeld in Tirol, Innsbruck-Land District, Tyrol, Austria
Oil shale with convolute stratification from the “Seefelder Schichten”
Petrography: dark-grey-brown to black shale with syn-sedimentary folds (convolutes).
Age: Upper Triassic (Norian).
Origin: Northern Calcareous Alps (e.g. Seefelder Sattel and Plansee).
Polished section manufactured by Rudolf Schwinghammer, München.
Rudolf ...
© Günter Grundmann, Detmold.