GeoLog

carbonate karsts

Imaggeo on Mondays: Viñales Valley

September 4, 2017
Imaggeo on Mondays: Viñales Valley
Vinales Valley . Credit: Alexis Merlaud (distributed via imaggeo.egu.eu).

From last week’s unusual desert landscape to this week’s lush valley in Cuba… The picture shows the Vinales Valley, a karstic depression with mogotes in western Cuba. Karst is the general term for landscapes formed when limestone is disolved by carbonic acid, in rain water. This leads, in particular, to the formation of an underground network of caves and rivers. In the tropics, ...[Read More]

Imaggeo on Mondays: Mola de Lord

August 31, 2015
Imaggeo on Mondays: Mola de Lord
Mola de Lord . Credit: Sarah Weick (distributed via imaggeo.egu.eu)

From the easterly Atlantic waters of the Bay of Biscay to the Catalan wild coast (Costa Brava) in the west, the Spanish Pyrenees stretch 430 km across the north of the country. At the foothills of the Catalan Pyrenees you’ll find the Pre-Pyrenees. Despite not reaching the soaring heights of the peaks of the Pyrenees, they nonetheless offer important insights into the geology of the range and stunn ...[Read More]