Siltstone

Rock type: 
Age: 
190 millions years

Russia, Chita region, Pogromnoye gold deposit. Carbon siltstones with quartz veins. Ikagiyskaya series. Lower Jurassic.

Rock type: 
Age: 
187 millions years

Russia, Magadan region, left side of the Duck river. Quartz-feldspar siltstones. Lower Jurassic.

Rock type: 
Age: 
187 millions years

Russia, Magadan region, left bank of the Kolyma river. Quartz-feldspar siltstones with quartz veins. Lower Jurassic.

Rock type: 
Age: 
172 millions years

Russia, Magadan region, starboard side of the valley of the river Burkhala. Siltstones with interbeds of sandstones with quartz veins, lenses. Quartz contains gold mineralization. Susumanskaya series??? Fossil: Inoceramus sp. indet. Middle Jurassic. Aalenian.

Rock type: 
Age: 
185 millions years

Russia, Magadan region, starboard side of the valley of the Sturmovoy creek. The alternation of siltstones and sandstones with quartz veins and lenses containing gold mineralization. Low Jurassic.

Rock type: 
Age: 
168 millions years

Russia, Magadan region, creek watershed Assault (Shturmovoy) and Chess (Shakhmatnyy). Siltstones with interbeds of sandstones with quartz veins, lenses. Quartz contains gold mineralization. Susumanskaya series. Fossil: Inoceramus sp. indet., I. ex gr. porrectus Eichw. Middle Jurassic.

Rock type: 
Age: 
140 millions years

Russia, Caucasus, Stavropol Territory, Kislovodsk, gorge of the river Berezovka. Limestones, dolostones, dolomitic siltstones. Limestones are yellowish-gray, cream, oolitic, bioclastic, massive, thick-plate. Baksanskaya series. Fossil: Psilothyris ullukolensis Mois., Septaliphoria guerassimovi Moiss., Pholadomya valangiensis Pict. et Camp., Modiola gillieroni Pict. et Camp., Hinnites renevieri Pict. et Camp., Nerinea upensis Pcel., N. subbaidarensis Pel., Euthymiceras sp. Lower Cretaceous. Berriasian. Valanginian.

Rock type: 
Age: 
400 millions years

Russia, Caucasus, Kabardino-Balkarian Republic, Kyzylkol river valley. Basaltic lava with interlayers of jasper, breccia, siltstones, schists. Kyzylkol'skaya series. Lower - middle Devonian. Pragian, Emsian, Eifelian.

Rock type: 
Age: 
400 millions years

Russia, Caucasus, Kabardino-Balkarian Republic, Kyzylkol river valley. Basaltic lava with interlayers of jasper, breccia, siltstones, schists. Kyzylkol'skaya series. Lower - middle Devonian. Pragian, Emsian, Eifelian.

Rock type: 
Age: 
194 millions years

Russia, Caucasus, Kabardino-Balkarian Republic, Harbas river valley. Quartz sandstones, with intercalations of siltstones and mudstones. At the base - coal layers. A coal seam is visible in the photo. Khumarrinskaya series. Thickness 240 meters. Fossil: Velopecten rollei Tate, Lima punctataSow., Circostylus euomphalus Quenst., Leda (Dacryomya) cf. graphica Tate, Astrate subtetragona Munst., Parallelodon aff. similis Terq., Hinnites sp. ind. (cf. davoei Dam.), Nucula cf. palmae Sow. Lower Jurassic. Sinemurian.