Imaggeo on Mondays

Imaggeo on Mondays: Gole dell‘ Alcantara

Laura Roberts-Artal November 7, 2016

Find a new way . Credit: Wolfgang Fraedrich (distributed via imaggeo.egu.eu)

On account of Mount Etna (Europe’s largest volcano), the island of Sicily is peppered with geological wonders. Starting with the summit craters of the volcano itself, right through to over 200 caves formed within lava tubes, the island is packed with volcanic sights.Chief among them is Gole dell ‘Alcantara, a system of gorges formed 8,000 years ago in the course of the river Alcantara ...[Read More]

Imaggeo on Mondays: A look inside a thunderstorm

Mareike Schuster October 31, 2016

Mesocyclone . Credit: Mareike Schuster (distributed via imaggeo.egu.eu)

This week’s contribution to Imaggeo on Mondays is a photograph of a mesocyclone – and its rotating wall cloud – photographed by Mareike Schuster, an atmospheric scientist from Freie Universität Berlin, Germany. The picture was taken in June 2012 near Cheyenne, Wyoming in the United States during a field campaign, ROTATE, led by the Center for Severe Weather Research, based in Boulder, Colora ...[Read More]

Imaggeo on Mondays: Why does a Norwegian glacier look blue?

Kay Helfricht October 24, 2016

Blue Svartisen . Credit: Kay Helfricht (distributed via imaggeo.egu.eu)

This picture shows the outlet glacier Engabreen running down from the plateau of Svartisen in Norway. Svartisen ice cap comprises two glacier systems of which the Vestre (western) Svartisen is Norway’s second largest glacier. Located right at the polar circle, Svartisen covers a total of 369 km² of the Nordland region. These coastal mountains accumulate a snowpack of 5-7 m depth through the winter ...[Read More]

Imaggeo on Mondays: The odd ‘living’ rocks

Laura Roberts-Artal October 17, 2016

Huepac stromatolites . Credit: Hugo Beraldi (distributed via imaggeo.egu.eu)

Microbialites – structures which result from the interaction between microbes and sediments – have existed in the rock record since 3700 Ma ago until the present day. The presence of microbes in environments where mineral precipitation is prevalent, usually derives in the development of such chemical sedimentary structures. This can take place in marine, non-marine, and subterranean environm ...[Read More]