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.



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Guia de la zona volcànica de la Garrotxa

4/13/2012

Miocene vertebrate site of Can Mata dump (Margin of the Valencia Trough, Vallès-Penedès depression)

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The dump of Can Mata is a very important palaeontological site. Including, at the moment, a succession of one hundred points containing micro and macro-vertebrate, spread over about 300 m of stratigraphic series. Comprises a interval of time of more than one million years.
This deposit was discovered from the redevelopment of a landfill. Successive excavations as they advanced the works have allowed to extract tens of thousands of fossils. Their study provides a unique opportunity to investigate Aragonian terrestrial ecosystems in south-western Europe. Of all the findings, highlights a new species of ape, the Pierolapithecus catalaunicus.
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4/04/2012

Ribes Blaves gauge (Catalan Coastal Ranges)


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The boundary between the Catalan Coastal Ranges to the margin of the Valencia Trough is a staggered fault of hundreds of miles. Affects the Hercynian basement and has a complex history. Paleogene was to act as a directional fault, while during the Neogene acted as a normal fault with a jump of thousands of feet.
This led to a severe strain gauges of the most paradigmatic of Europe, with a high scientific and scenic value. Discontinuously along the outcrops of about 30 km, and between Esparraguera to Terrassa. One of the most spectacular is Ribes Blaves (Olesa de Montserrat).