erosion

Imaggeo on Mondays: The shrinking of Earth’s saltiest lake

Laura Roberts-Artal December 5, 2016

One of the consequences of the rapid fall of the water level (>1 m per year), is that vast areas of salt-rich ground of the shrunken Dead Sea are prone to strong dissolution and mechanical erosion of the subsurface processes.

Submarine springs at the Dead Sea shoreline. Credit: Djamil Al-Halbouni and Dr. Eoghan Holohan (distributed via imaggeo.egu.eu)

The Dead Sea is one of the saltiest lakes on Earth, located at the lowest point of the globe. For centuries it has been known for the restorative powers of its muds and waters. Their hypersalinity means it is possible to easily float on the lake’s surface. Bordering Israel, the West Bank and Jordan, it is a unique environment in an otherwise arid region. Changing climate, which is seeing tempera ...[Read More]

Imaggeo on Mondays: the rocks that look like Swiss cheese

Laura Roberts-Artal September 26, 2016

Sardinian coastal scenery . Credit: Michael Grund (distributed via imaggeo.egu.eu)

Over the course of centuries and millennia, the force of winds, seas, ice and rains, sculpt rock formations around the globe. From the world-famous glacier carved landscapes of Yosemite National Park, to the freeze-thawed hoodoos at Bryce National Park, through to the wind battered stone pillars of South China Karst, boundless geological formations have been transformed by the power of erosion and ...[Read More]

Imaggeo on Mondays: The Groapa Ruginoasa

Laura Roberts-Artal February 15, 2016

the Groapa Ruginoasa . Credit: Martin Reiser (distributed via imaggeo.egu.eu)

The Apuseni National Park, in Romania, is a geoscientists paradise. This 187,000 acre Park in the Western Carpathians boasts caves, deep valleys and gorges, karst landscapes, rocky steep walls and underground watercourses. The sheer beauty of the landscape is captured in today’s Imaggeo on Mondays image featuring the Groapa Ruginoasa, a deep sandstone ravine. “Locality names of morphol ...[Read More]

Imaggeo on Mondays: The place where water runs through rocks

Laura Roberts-Artal July 13, 2015

Waved rocks of Antelope slot canyon. Credit: Frederik Tack (distributed via imaggeo.egu.eu)

Antelope Canyon, located in Arizona, USA, was formed by erosion of the Navajo Sandstone, primarily due to flash flooding and secondarily due to other sub-aerial processes (think of physical weathering processes such as freeze-thaw weathering exfoliation and salt crystallisation). Rainwater runs into the extensive basin above the slot canyon sections, picking up speed and sand as it rushes into the ...[Read More]