Geomorphology

Imaggeo on Mondays: Small scale processes, large scale landforms

Jana Eichel November 12, 2018

Small scale processes, large scale landforms Credit: Jana Eichel (distributed via imaggeo.egu.eu)

This picture was taken in a sea cliff gully landscape at the Portuguese coast. It shows the microrelief which small scale wash and erosional processes produce in these poorly consolidated sediments. These small scale landforms could be interpreted as initial stages of larger scale gully landforms, which can be seen in the back. This highlights the importance of regarding scales and scale linkages ...[Read More]

Imaggeo on Mondays: Hole in a hole in a hole…

Olivia Trani October 29, 2018

Hole in a hole in a hole.. Credit: Djamil Al-Halbouni (distributed via imaggeo.egu.eu)

This photo, captured by drone about 80 metres above the ground, shows a nested sinkhole system in the Dead Sea. Such systems typically take form in karst areas, landscapes where soluble rock, such as limestone, dolomite or gypsum, are sculpted and perforated by dissolution and erosion. Over time, these deteriorating processes can cause the surface to crack and collapse. The olive-green hued sinkho ...[Read More]

Imaggeo on Mondays: A modern cliff hides ancient dunes

Olivia Trani October 22, 2018

Ancient Dune, Modern Cliff Credit: Robert Wu (distributed via imaggeo.egu.eu)

Ancient sand dunes exposed off a cliff face on the shoreline of Nova Scotia at the Islands Provincial Park. The juxtaposition of the high angled strata and flat lying layers above revels the drastic change in climate in Nova Scotia’s history; from vast sand dunes to a calm lake system, and presently the western coastline of the Atlantic Ocean. Description by Robert Wu, as it first appeared o ...[Read More]

Imaggeo on Mondays: How erosion creates natural clay walls

Olivia Trani October 8, 2018

Once there was a road...the clay wall. Credit: Chiara Arrighi (distributed via imaggeo.egu.eu)

The badlands valley of Civita di Bagnoregio is a hidden natural gem in the province of Viterbo, Italy, just 100 kilometres from Rome. Pictured here is the ‘wall,’ one of the valley’s most peculiar features, where you can even find the wooden structural remains of a trail used for agricultural purposes in the 19th and 20th centuries. The photograph was taken by Chiara Arrighi, a post-doc research a ...[Read More]