Andy Rouse / Chinstrap penguin (Pygoscelis antarcticus) group on blue iceberg, Antarctica
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Floris van Breugel / Colorful layers of rock on the inside of Mount St Helens' crater, seen from the rim. Washington, USA. May 2013
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Nick Garbutt / Thrombolites and stromatolites, layered mounds of sedimentary rock originally formed from the growth of layers of cyanobacteria. On shore of Lago Sarmiento, Torres del Paine National Park, Patagonia,...
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Nick Garbutt / Thrombolites and stromatolites, layered mounds of sedimentary rock originally formed from the growth of layers of cyanobacteria. On shore of Lago Sarmiento, Torres del Paine National Park, Patagonia,...
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JIM CLARE / Polylepis or paper tree, (Polylepis sp.) showing layered bark, paramo, Azuay, Andes, Southern Ecuador.
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JIM CLARE / Polylepis or paper tree, (Polylepis sp.), layered bark, paramo, Azuay, Andes, Southern Ecuador.
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Theo Bosboom / Layers of colourful flysch rock partly covered with sand and with common limpets (patella vulgata) on several places, as photographed on Barinatxe beach in the Blibao region in Northeast Spain. April...
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Will Watson / Boulder in heathland from the Senni Formation. Mudstone layers were deposited in freshwater lakes during the Lower Devonian. Cat's Back, Black Mountains, Herefordshire, England, UK. May.
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Ashley Cooper / Gentoo penguins (Pygoscelis papua) with members of an expedition cruise ship. Curverville Island, Antarctic Peninsula.
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Nick Upton / Chevron folds of Sandstone, mudstone and black shale rock layers in Millook Haven cliffs, Cornwall, UK, April 2014.
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Nick Upton / Chevron folds of Sandstone and shale rock layers in Millook Haven cliffs, Cornwall, UK, April 2014.
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Juan Carlos Munoz / Monastery terrace on Skellig Michael, Skellig Islands World Heritage Site, County Kerry, Republic of Ireland. September 2015.
