Tilted layers showing bedding planes in strata of sedimentary rock in coastal cliff at Odeceixe, Algarve, Portugal, Europe

Caleta Negra (Black Bay) a popular boat trip and walk with its distinctive sedimentary and lava strata, Ajuy, Fuerteventura, Spain, Atlantic, Europe

Sedimentary rocks, blue lias, shale-limestone sequences, Lyme Regis, Jurassic coast, UNESCO World Heritage Site, Dorset, England, United Kingdom, Europe

Sedimentary rocks, clay, colour banded by iron oxides, horizontal Triassic Chinle Clay, Blue Mesa, Painted Desert, Arizona, United States of America, North America

Folded limestone and shale, Jurassic period, Stair Hole, Lulworth, Dorset, England, United Kingdom, Europe

Folded layers of Jurassic sedimentary limestone and marl rocks in the cliffs at Vega beach, Ribadesella, Asturias, Spain, Europe

Folded layers of Jurassic sedimentary limestone and marl rocks in the cliffs at Vega beach, Ribadesella, Asturias, Spain, Europe

View of sedimentary layers from Cape Hay, Bylot Island, Nunavut, Canada, North America

Detail of red cliff, Dzhety-Oguz, near Kara-Kol, Kyrgyzstan, Central Asia, Asia

Rock formations on mountain side. Longyearbyen, Svalbard, Norway

Nash Point, Heritage Coast, Vale of Glamorgan, South Wales, UK (rr)

Nash Point, Heritage Coast, Vale of Glamorgan, South Wales

Deer Park, Martins Haven, Pembrokeshire, Wales, UK, Europe

Black Church Rock near Clovelly in Devon, England, United Kingdom, Europe

Nash Point, Heritage Coast, Vale of Glamorgan, South Wales

Rock formations on mountain side. Longyearbyen, Svalbard, Norway

Deer Park, Martins Haven, Pembrokeshire, Wales, UK, Europe

Rock arch, Marloes Sands, Pembrokeshire, Wales, UK, Europe

Rocky jagged coastline, eroded sandstone rock, view out to the ocean, De Kelders, Western Cape, South Africa