Catalan Central Depression

Coordinates: 41°50′00″N 1°11′00″E / 41.83333°N 1.18333°E / 41.83333; 1.18333
Source: Wikipedia, the free encyclopedia.
Geomorphologic map of Catalonia:
The Pla de Bages, in the midst of the Central Depression, with Montserrat in the background.
The Montmeneu, an isolated hill in the western area of the Central Depression.

The Catalan Central Depression (Catalan: Depressió Central Catalana) is a natural depression between the Pre-Pyrenees and the Catalan Pre-Coastal Range in Spain. It widens towards the west, linking with the Ebro Depression, Catalan: Depressió de l'Ebre, of which it could be considered an eastern extension. The Catalan Central Depression is about 180 km long with an average width of 50 km.[1]

Description

The Catalan Central Depression consists of a succession of high

marlstone. The Pla de Bages and the Conca de Barberà
are examples of these higher regions.

The limits of the Central Depression are different whether considered from the point of view of their origin or their actual relief. Some mountain ranges outside of the depression, like Montserrat and Sant Llorenç del Munt, are formed by the same geologic materials that make up the Central Depression, even though geographically they are situated in the Pre-Coastal Range. These materials were piled up over the more ancient rocks of the Catalan Mediterranean System.[2]

The Central Depression formed in the Tertiary, when a great gulf, that later became a sea, had its boundaries in the Pyrenees and the Catalan-Balearic Massif.[3] Marine sedimentation formed clay, and other limestone materials, like bluish marl where the sedimentation had been part of a quiet and slow process, as well as conglomerate in the areas of the mouths of ancient rivers coming down from the Pyrenees and the former Catalan-Balearic Massif. Evaporation produced sodium and potassium salts, as well as gypsum in certain areas.

Mountain ranges

Some minor mountain ranges are scattered within the Central Depression without a regular pattern. The main ones are:

See also

References

  1. ^ "Mapa Topogràfic de Catalunya". Institut Cartogràfic de Catalunya. Retrieved May 22, 2010.
  2. ^ Patronat de la Muntanya de Montserrat - Història i orígens
  3. ISBN 84-85709-51-9

External links

41°50′00″N 1°11′00″E / 41.83333°N 1.18333°E / 41.83333; 1.18333

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