Orsolya Haarberg / Coastal sedimentary rocks (sandstone, mudstone, dolomite, limestone) Vardo, Finnmark, Norway, July 2006

Orsolya Haarberg / Layers of different coloured sedimentary rocks (sandstone, mudstone, dolomite, limestone) Vardo, Finnmark, Norway, July 2006

Andy Trowbridge / Moeraki Boulder / Kaihinaki, on Koekohe Beach. 60 Million year old mudstone concretions. Moeraki, Waitaki District, Otago Region, South Island, New Zealand. January, 2012. Taken with Blue-n-Gold Polar...

Morley Read / Aerial shot of coastal mudstone pavement and tropical dry forest growing on clifftops, Esmeraldas Province, Ecuador, 2018. (non-ex)

Morley Read / Aerial shot of coastal mudstone pavement and tropical dry forest growing on clifftops, Esmeraldas Province, Ecuador, 2018. (non-ex)

Morley Read / Aerial shot of coastal mudstone pavement and tropical dry forest growing on clifftops, Esmeraldas Province, Ecuador, 2018. (non-ex)

Morley Read / Aerial shot of coastal mudstone pavement and tropical dry forest growing on clifftops, Esmeraldas Province, Ecuador, 2018. (non-ex)

Morley Read / Aerial shot of coastal mudstone pavement and tropical dry forest growing on clifftops, Esmeraldas Province, Ecuador, 2018. (non-ex)

Morley Read / Aerial shot looking down on waves breaking on a beach, Tonchigue, Esmeraldas Province, Ecuador, 2018. (non-ex)

Mike Read / Sandstone and mudstone shale cliffs from top of Maer cliff. On southwest coast path, Bude, Cornwall, England, UK. August 2018.

Mike Read / Folded sandstone and mudstone rock in Bude Formation. Bude, Cornwall, England, UK. August 2018.

Theo Bosboom / Jagged rock layers in the snow on a cold winters day at Persfjord, Varanger peninsual, Norway. These rocks are sedimentary rocks including mudstone, sandstones, dolomite and limestone. March 2017