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Shale

Shale

15 items

High rock cutting: an upper cliff of rugged orange-yellow dolomite above a pale grey layer, a thin whitish band and lower pale rock, beside a sandy track under a hazy sky. — Dolomite–Shale–Gypsum Succession Exposed in Uptown Cairo, Egypt Ahmed-M- Mohy

Wide stone staircase leading up to a doorway with a barred gate cut into a pale, layered limestone cliff, under a deep blue sky. — A Stratigraphic Sequence Carved in Stone – Rock-Cut Tombs in Limestone and Shale Formations of Hammamiya. Ahmed-M- Mohy

Person in sunglasses with arms folded standing on a stone-paved terrace below a pale layered rock face with carved rectangular openings, beside a stone bench and steps. — Stratigraphic Section of Limestone and Shale Rocks in Upper Egypt Ahmed-M- Mohy

Close-up of a rock face of thin horizontal layers in white, cream and orange, cut by cracks. — Interbedded Sandstone and Shale Layers in Egypt’s Eastern Desert. Ahmed-M- Mohy

Cut section of a drill core of dark grey, finely laminated black shale, with a rough pale grey mineral growth with white veins cutting into one end. — Section of a drillcore containing Tremadocian black-shale Sophie Graul

Close-up of a calcite geode lined with glassy crystal faces, with a small dark round crystal ball in the centre, reddish patches at the edges and a bright blue grain in the lower right. — Microphotograph of a calcite geode found in a glendonite structure Sophie Graul

Close-up of clear, glassy calcite crystals with tiny dark specks around a dark, rough cluster of metallic black and reddish-brown grains. — Calcite and oxides inside a glendonite masse Sophie Graul

Rocky shore of dark grey jagged rock ridges thickly coated in bright green algae, giving a soft mossy look like a miniature mountain range. — Into the mossy mountains Franziska Staudt

Tall cliff of pale yellow gypsum layers alternating with green and red shales, crossed by white veins and offset by a sloping fault, with several people at its base for scale. — Sea level change and tectonics collide Dan Killam

Smooth dark blue-grey rock surface with swirling fine layering, cut by a row of parallel lens-shaped cracks filled with yellowish mineral, with a small white object for scale. — Can't stand the Tension David Tanner

Black-and-white view of a smooth sloping rock slab with a low domed bulge and a crack, flanked by tufts of small round flowers, in bright backlight. — Mud Volcano David Tanner

Black-and-white view of a rock face where a dark band of thin wavy layers is squeezed between blocky lichen-covered beds, with a compass for scale. — Shale dykes in Carboniferous delta sequence David Tanner

Rounded hills banded in yellow, orange and red, lit by sunlight under dark storm clouds, with distant dark mountains. — Painted Hills after a storm Daniele Penna

Person standing at the foot of a pale rock wall whose layers are folded into tight, sharp zigzag chevron shapes, holding a hammer. — Chevron Folds,North of Zahedan (Iran) Saeed Jabbari Boukani

Chevron fold in a grey hillside of alternating shale and paler sandstone beds bent into sharp zigzags, with a person in a sun hat and grey shirt standing at the foot for scale. — Chevron Fold,Nikshahr,Makran zone,Iran Ahmad Aghahosseini

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