Lithological characteristics of the uppermost terrigenous Devonian complex in Estonia

In Estonia the uppermost terrigenous complex of Middle Devonian (Givetian) age is represented by light, mostly whitish-, yellowish-, and pinkish-grey fine-grained, weakly to medium-cemented cross-bedded sandstones, containing grey, reddish-brown or mottled siltstone and clay interlayers. The sequence comprises three stages (from the base): Burtnieki, Gauja, and Amata. Smaller subdivisions are distinguished in the Burtnieki and Gauja stages. A lithological-mineralogical characterization of all the units, and criteria for their distinction in sections are given