Geomorphology

Imaggeo On Monday: Rock pyramid shaped by weathering

Christoph Mayr July 19, 2021

Rock pyramid shaped by weathering. Credit: Christoph Mayr (distributed via imaggeo.egu.eu)

The almost perfect rock pyramid in the foreground was formed by physical weathering and found in the Los Glaciares National Park in southern Argentina. The block was deposited on top of a rock surface polished by glacial erosion. The pyramidal peaks in the background are also the result of glacial erosion, albeit on a much larger scale. Description by Christoph Mayr, after the description o ...[Read More]

Imaggeo On Monday: Both Ends of the Rainbow

Adam Ciesielski July 5, 2021

Both ends of the rainbow. Credit: Adam Ciesielski (distributed via imaggeo.egu.eu)

A double rainbow was captured when heading through the glaciated Benasque valley, located in the heart of the Pyrenees. The photo was taken just before the sunset, after heavy rainfall. A rainbow is caused by reflection and dispersion of light in water droplets. Second rainbow arc results from one reflection more than in the first one, thus the rainbow colours are “reverted”. The geome ...[Read More]

Winners of the EGU Best Blog Posts of 2020 Competition

Hazel Gibson February 5, 2021

2020 was a brilliant year for our blogging network here at EGU. Across the EGU’s official blog, GeoLog, as well as the network and division blogs there were so many interesting, educational and just downright entertaining posts this year it was hard to get the blog editors to choose their favourites! Nevertheless at the beginning of January, to celebrate the excellent display of science writing ac ...[Read More]

Imaggeo On Monday: Ice-coated roots at sunset

Katja Laute December 14, 2020

Ice-coated roots at sunset . Credit: Katja Laute (distributed via imaggeo.egu.eu)

The coating by the ice and the icicles are created through the interplay of wave action and the simultaneous freezing of the water around the exposed tree roots. The reason for the exposed tree roots is increased bank erosion due to a rather unusual circumstance. The combination of the lake not yet being frozen in early winter, and strong winter storms, make it very easy for the waves to erode the ...[Read More]