Showing posts with label ebro basin. Show all posts
Showing posts with label ebro basin. Show all posts

9/17/2012

The Súria anticline -el Mig-món- (Ebro Basin, deformed foreland)


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In the centre of the Ebro basin are potent saline deposits covered by thick alluvial continental sequences.
Around the upper Eocene, Pyrenees progress tectonically affected areas located almost in this area. Evaporitic deposits acted as detachment level of the upper strata favouring the formation of folds and thrusts. Salts, with their ability to accumulate and ascending flow forming large domes.
The Mig-món anticline is a fold formed by the diapiric rise described above.

6/13/2012

Coastal alluvial fan of Sant Lloreç del Munt (Ebro Basin, undeformed cover)


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The Sant Llorenç del Munt massif is constituted by around 1000 m of massive conglomerates. This imposing mass rudites correspond to the proximal facies of a coastal alluvial fan that flows into the Ebro Basin during the Eocene. This alluvial fan is contemporary alluvial fan of Montserrat.
But a transect between the towns of Matadepera amd Manresa is possible observer all facies typical of this type of depositional system (delta plain, coastal plain, delta front, slope, carbonate platform, etc.).  Many outcrops of high value teaching!
In recent years taken on international significance as a place of training for petroleum geologists.
Fint out more
Estratigrafía secuencial de sistemas deltaicos en cuencas de antepais: ejemplos de Sant Llorenç de Munt, Montserrat y Roda (paleógeno, cuenca de antepaís surpirenaica)

5/04/2012

Coastal alluvial fan of Montserrat (Ebro Basin, undeformed cover)


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The "core" of the massif of Montserrat is constituted by around 1000 m of massive conglomerates. This imposing mass rudites corresponds to the proximal facies of a coastal alluvial fan that flows into the Ebro Basin during the Eocene. Three It should be noted aspects:

  1. It is a paradigmatic example in the world that allows fine depositional sequences in an alluvial fan.
  2. On a geomorphological feature the impressive forms (monoliths, cliffs...).
  3. It is a place of special historical significance, cultural and spiritual in Catalonia.

4/16/2012

Croscat volcano (Ebro Basin, deformed foreland)


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Croscat is one of forty volcanoes Volcanic Area Garrotxa. Special importance that is given by the following facts:



  1. Is the largest strombolian conus in the Iberian Peninsula (160 m high and 800 m in diameter).
  1. Is the youngest volcano in the Iberian Peninsula (the last eruption has only about 11,500 years).
  1. A part of conus was exploited, opening an interesting outcrop which today allows a detailed observation and has a high educational value.
  1. Led to an lava outflow of 20 km2, type aa. About this is the casting of the Jordà beechwood, a most interesting mature forests of Catalonia.



Find out more
Guia de la zona volcànica de la Garrotxa

3/26/2012

Basaltic cliffs of Castellfollit de la Roca (Ebro Basin, deformed foreland)


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The basaltic cliffs of Castellfollit de la Roca are a one of the sites most popular of Catalan geological heritage thanks to its unique beauty. It is located in the Volcanic Zone of the La Garrotxa, comprising more than 40 Quaternary volcanic cones in excellent condition.
The cliff is formed by overlapping two volcanic lava flows invaded the valley of the river Fluvià. Later, the river dug this obstacle and describes this remarkable precipice. One of the most notable is the disjunction in its hexagonal columns.

3/20/2012

Neotectonic gravens of Ferran (Ebro Basin, undeformed cover)


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They are two small tectonic gravens in echelon. They have about 9 km long and 500 meters wide and are limited by normal faults. The vertical jump is a minimum 50 m. They are located in a very flat region of Cenozoic sediments, which has almost no tectonic deformation. Presents some remarkable characteristics, such as:
  • The low sinuosity of its limits.
  • Cut clearly of rivers that drain the basin.
  • His background is lower than the regional elevation.
All this suggests that they have a very recent origin.