Siltstone

Russia, Khabarovsk territory, Khekhtsir range, mount Three-headed. Dark gray tuffogenic siltstone. Krasnorechenskaya series. Thickness - 2750 metres. Fossil (not found here, finds east): ammonites - Arcestes; pelecipods - Halobia cf. charlina Mojs., Posidonia subwengensis Kipar.; foraminifera. Upper Triassic. Carnian.