erosion

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: Water Force

Daniela Lobianco May 31, 2021

Water Force. Credit: Daniela Lobianco (distributed via imaggeo.egu.eu)

A force is a push or pull upon an object resulting from the object’s interaction with another object. This image shows the most magnificent force in nature; water, interacting with an inclined rock formation, with a backdrop of the magnificent landscapes of Canada. Description by Daniela Lobianco, after the description on imaggeo.egu.eu. Imaggeo is the EGU’s online open access ...[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]

Imaggeo On Monday: Desert Varnish, Antarctica Style

Martha Cary Eppes November 30, 2020

Desert Varnish, Antarctica Style . Credit: Martha Cary Eppes (distributed via imaggeo.egu.eu)

This photograph highlights the oxidized surface of diorite boulders, which fall from the ice at the base of the Mullins Glacier in Beacon Valley, Antarctica when the ice moves directly from a solid state into a gas state, without becoming a liquid in between (a process called sublimation). The particular features (morphology) of the varnish and the desert pavement of this unique environment are re ...[Read More]