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Geopark Sierra Norte de Sevilla

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In September 2011 has been approved the incorporation of the Natural Park Sierra Norte de Sevilla in the European Geoparks Network.

The Geopark, located north of the province of Seville, was declared a Natural Park by the Parliament of Andalusia in 1989. It is one of the largest natural parks in Andalusia, covering 177,484 hectares and includes all or part of ten municipalities with a population of approximately 30,000 inhabitants.

 

Panoramic View. Geopark Sierra Norte de Sevilla

 

The Sierra Norte de Sevilla Geopark is located in the mountain ranges of central Sierra Morena, including geological areas of Ossa-Morena and Sudportuguesa of the Iberian Variscan Orogen (or Hesperian Massif). Most rocks are for the Proterozoic age (1,000 and 540 million years) and Paleozoic (540 to 250 million years) and possibly some sector Triassic age (250 to 200 million years), except in the south-east of the park, where there are some outcrops of sedimentary rocks of Miocene (between 25 and 5 million years), belonging to the sedimentary basin of the Guadalquivir River.

Proterozoic and Paleozoic rocks that outcrop in the Geopark have had the effect of two orogenic cycles (Cadomian, 540 million years ago, and Variscan, between 360 and 300 million years). The dominant direction of the main structures is Northwest - Southeast: stratification, schistosity and small-scale faults, folding structures and large fractures that delimit the different geological domains in the Geopark.

The large size of the Geopark and its rich geological, archaeological and mining sites has enabled the gathering of multiple Points of Geological Interest and several geo-tourism routes short to medium length. These locations and geo-tourism routes comprise the most significant aspects of the Geopark:

 

 

  • Paleozoic materials that make the main structure, particularly the sedimentary form Layers of Campoalla, a  detrital-carbonate succession of the Lower-Middle Cambrian.

 

 

 

Cerro del Hierro Natural Monument

 

  • The karst and mines complex at El Cerro del Hierro Natural Monument: a spectacular paleokarst originated in middle-upper Cambrian over Lower Cambrian limestone, with mines that exploded iron deposits of karst cavities, mainly in the twentieth century, although there is evidence of exploitation from the Roman era.

 

 

Black Shales

 

  • The Valley Syncline, whose sedimentary record from the Ordovician (480 million years ago) to Devonian (360 million years ago) and abundance of pelagic fossils, allows paleo-geographic and environmental reconstruction of the passive margin marine platform between the Ossa-Morena and Centroibérica zones.

 

 

Jellyfish Prints

 

  • The great location of Lower Cambrian jellyfish prints (between 540 and 510 million years ago), whose interest lies in the abnormal size of the prints and the uniqueness of their morphology, with the highest concentration of individuals known in the Iberian Peninsula and one of the largest in the world.

 

 

 

  • The beauty of the abundant crag landscapes (“Berrocales”) developed on the abundant igneous rocks: bowls, rocky hills, plain valleys with sandy soil development, dome-shaped domes, stone knights, and so on.

 

 

Anfilobites in Almadén de la Plata

 

  • The Beja-Acebuches amphibolites present in Almaden de la Plata, which are interpreted as the remains of an ancient ocean floor that would indicate the existence of an ancient suture zone between tectonic plates.

 

 

Deposits of the Permian basin of Viar

 

  • The deposits of Permian age (between 300 and 250 million years ago) and Triassic age (250 to 200 million years), representing the filling of post-orogenic continental basins with abundant fossil flora.

 

 

Cascade Huesna Natural Monument

 

 

  • Waterfalls and recent deposits of travertine limestone in the Hueznar River, another Geopark Natural Monument.

 

 

the ancient and varied mines

 

 

  • And the ancient and varied mines and quarries around the Geopark, with multiple historical and recent mining.

 

 

  • Geological Map of Sierra Norte de Sevilla Geopark

1.- Regional Geological Scheme. Distribuition of sheets

2.- Conventional Signs

3.- Geological Legend 1

4.- Geological Legend 2

5.- Geological Legend 3

6.- Sheet 1

7.- Sheet 2

8.- Sheet 3

9.- Sheet 4

10.- Sheet 5

11.- Sheet 6

12.- Sheet 7

13.- Sheet 8

14.- Sheet 9

15.- Sheet 10

16.- Sheet 11

17.- Sheet 12

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