Geology

Articles in ‘Geology’

Torrellones

May 7th, 2017

Clay soils in parts of the Monegros are eroded easily leaving weird sandstone formations called torrellones, looking like something straight out of Arizona. This one is called Cabeza de Perro, Dog’s Head. 

Image by Rodriguem on Wikicommons

Deadly earthquake hits Lorca, Murcia

May 11th, 2011

Rather sad news, Two earthquakes with magnitudes of 5.1 and 4.5 have hit the centre of the Murcian town of Lorca, killing at least ten people, after several buildings collapsed. Although minor tremors are relatively common in south-east Spain, this the first time since 1956 that so many people have been killed. Almost 200 soldiers have been dispatched to the area.

Tenerife tsunami

April 21st, 2011 The northwest coast of Tenerife was destroyed by at least two massive tsunamis makes between 150,000 and 180,000 years ago. The waves towered 50 metres high and swept some 800 metres inland in an area of several square kilometers. There is no comparable risk of Tsunamis today on the island. El Mundo

Satellite image of the Strait of Gibraltar

September 18th, 2010

File:Strait of gibraltar.jpg

Satellite image of the Strait of Gibraltar from NASA found on Wikipedia.

Algeciras Harbor is the prominent notch cut out of the eastern end of the north shore of the Strait; the Rock of Gibraltar is the tiny arrowhead that separates the notch from the Alboran Sea. The Sierra Nevada, farther away down the Spanish coast, lives up to its name in this April scene. The difference in elevation between the Sierra Morena and the Guadalquivir River valley is highlighted nicely by cumulus clouds. Tangier, Morocco can be seen as a light-toned spot on the southern shore of the Strait, near the entrance to the Atlantic Ocean.

Spain geography game

March 25th, 2010 This map game for learning the moutain ranges and basic geographical units of Spain is good fun. Only takes a couple of minuntes. More Spain map games here, including this fiendish river quiz.

Earthquake in Andalucia and Extremadura

December 17th, 2009 An earthquake of 6.3 on the Rictar scale with its epicentre 100km off Cabo de San Vicente, Portugal hit Andalucia and Extremadura. Although, there are no reports of injuries, its intensity is a reminder of the small potential of a large quake striking southern Iberia. See also earthquakes in Spain

Mediterranean flood mystery solved

December 10th, 2009 A new study published in Nature has revealed details of the catastrophic flood that refilled the Mediterranean Sea more than five million years ago. The flood occurred when Atlantic waters cut through into the Mediterranean basin which had dried up when Africa crashed into Iberia, drying out the trapped Mediterranean. The researchers say that a 200km channel across the Gibraltar strait was carved out by the floodwaters. It may have may involved peak rates of sea level rise in the Mediterranean of over 10 metres a day and may have taken just two years to fill up. Imagine the immense power of the waterfall at Gibraltar. BBC See also: The biggest waterfall in geological history (with video)

Aragonite

March 12th, 2009

Spain has given the world a limited number of mineral names, including Aragonite. Aragonite was first identfied by one Abraham Gottlob Werner from a piece from Molina de Aragón (Guadalajara), which he erroneously believed to be in Aragon.The largest deposits of Aragonite in the world are found in Molina de Aragón, and in Minglanilla in Cuenca.

Geological sites in Spain to be protected

February 27th, 2009

From a geological point of view, Spain is extremely varied with sites as old as 600 million years and showing rare examples of the planet’s evolution. Two parallel projects now seek to document this national heritage. The aim of the first project is to include 144 Spanish sites on the Unesco world list of outstanding geological sites. The second project seeks to create a Spanish catalogue of geological sites of interest, which will then allow them to be protected by law, and include sites in Abella, Isona and Camarasa, in Lérida; Punta Aitzgorri in Zumaya (Basque Country), and the Sorbas reefs in Almería. Other interesting places to be protected include the amber deposits in Peñacerrada, El Soplao, in Cantabria, the carboniferous forest of Verdeña, and the ichnite (dinosaur track) sites found in a number of areas.
El País
List of sites

The biggest waterfall in geological history

December 21st, 2007

Excellent post from Steve on the forum “Some 5.5 million years ago the force of Africa colliding with Europe, closed the straits of Gibraltar, sealing off the Med, which then evaporated over 2000 years. The straits were then breached by the Atlantic and the basin filled up again over 100 years. This happened many times and resulted in massive salt accumulations. The Nile and Rhone created deep canyons as they cut down to the deep desert basin than had once been the Med” Read complete post Also watch this video.