Slate roofing
Slate mining
Slate outcrop, France
Slate, Brattleboro, Vermont, USA
A piece of natural slate
Welsh slate, close up
Variety of Metamorphic Rocks
Slate
Tourmaline mica in slate
Slate showing stratum lines, full frame
Andelusite crystals in slate
Slate with pyrite
Deformed quartz veins in slate
Cubic zirconia
Rock types
Devonian slates
Green marl
Spotted slate
Slate quarrying, 19th century
Shale specimen
Limestone specimen
Arkose, a sedimentary rock
Yellow Sandstone
Sedimentary Rocks
Arkose, a sedimentary rock, Massachusetts
Septarian nodule
Folds of calcite in limestone rock
Sandstone
Chert, a type of sedimentary rock
Limestone rock, close up
A piece of black shale, close-up
Bunter sandstone
Flute marks on mudstone
Concretion of sand and iron on Dinosaur Ridge, Colorado, USA
Slate chippings
ストーン
スレート
Slate roof tiles, full frame
Greywacke
Sedimentary rock concretion
Cross-bedding in sandstone rock
Pink orthoquartzite
Gypsum rock
Shale, close-up
Banded flint
Sandstone rock formation, South Africa
町工場のスレートの屋根
工場の傷んだスレート葺きの屋根
English stonecrop
工場の非常階段
Ornamental pond in garden
Aframomum
Red Shale
Shale
Variety of Sedimentary Rocks
Shale with fossilized ripple marks
Sandstone, Utah, USA
Shale, California, USA
Flint
Mudstone
Shale, close up
Calcareous mudstone
Anthracite
Sample of sandstone
Sample of shale
clapperboard
Ammonite fossils
Rock concretions
Limestone pavement
Rock salt
Karst erosion in the Italian Apennines
Sedimentary rock outcrop
Glacial sediments
Polished limestone
Gypsum and sulphur crystals
Rock salt crystals
Anthracite coal
Sample of limestone
Sea stack, Wales
Limestone cave
Shelly limestone, polarised LM
Nummulitic limestone, LM
Nummulitic Limestone, LM
Sandstone specimen
Lignite Coal specimen
Flint and Chalk, Dover, England
Close up of a pattern in Sandstone, Utah
Cannel Coal, Kentucky, USA
Bituminous Coal, Pittsburgh, Pennsylvania
Anthracite Coal, Pennsylvania, USA
Lignite, Brandon, Vermont, USA
Coal Essex Junction, Vermont, USA
Ganister, polarised light micrograph
Polarised LM of thin section of greywacke
Carboniferous limestone pavement, Malham Cove
Quartz and schist outcrops
Hertfordshire puddingstone
Calcite in mudstone
Flint stone
Selenite crystals
Ancient Roman columns
Gogotte, fossilised sandstone concretion
Gogotte fossilised sandstone concretion, close-up
Layered flysch sediments
Mineral deposits in sandstone
Tufa
Ancient sand and shell layers
Titanium deposits on a beach
Near metallic lustre of anthracite rock
Stalactite
Layers of sedimentary rock in Chimborazo, Ecuador
Heap of ground coal
Bunter sandstone, light micrograph
Limestone, light micrograph
Limestone
Val Gardena sandstone, light micrograph
Val Gardena sandstone
Technique for creating a flint tool
Bouma sequence in flysch
Limestone with Turritella shell fossils
Limestone with fossilised shells
Fossiliferous Limey Shale, New York, USA
Quartz filled concretion
Retiolites fossil on shale
Coral limestone
Spriggina fossil
Copper salts on a rock
Conichalcite and adamite
Marble pebbles
slate
Fossil remains of Peking Man
Sedimentary discordance
Unrefined piece of jet
Hollandaise sauce over eggs benedict breakfast on slate
Pile of coal
Samples of sandstone
Lignite