Two Eteocretan inscriptions on blocks of grey schist were excavated in 1936 by Pierre Demargne and Henri van Effenterre from the western part of the large cistern mentioned above.

The completed structure is gray schist with brownstone quoining and a polychrome slate roof.

Chalukyas were renowned for their architectural (Gadag style) innovations, built out of the grey green chloritic schist of the region.

The ores are hosted in the strongly deformed Lower Devonian Guile Mountain Formation (a grey to dark grey mica schist).

He found where the track crossed an intrusion of grey schist, so hard that even the passing of Trok's legions had left no mark upon it.

-- Taita reached the point where the ridge of grey schist crossed the road, and stopped abruptly.

Now the area has been restored, its formerly overgrown outcroppings of grey schist exposed.

Finally, there are fragments of yellowish quartzite and gray schist whose places of origin have been located on the long northern spur of Mount Clark.

Above this is a bluish grey schist from the Permain, and the next layer is carbonate from the Middle to Late Triassic.