Long before man existed for millions of years geology was setting up these lands. If you look at the clearing next to the restaurant Las Colineras at the entrance of La Mata, we saw red material, whereas if we look to the north, the mountains above La Vecilla have other colors. Would you like to know why?
Remove next to the restaurant Las Colineras in La Mata de Curueño
From geological point of view, of Curueño La Mata is located in the Alpine domain , on the northern edge of the basin Duero, infilled by continental Tertiary and Quaternary materials that rely on the Paleozoic discordant southern edge of the Cantabrian Mountains .
is, in the Iberian Peninsula are two major geologic units, the Iberian Massif and Alpine domain and Mata The horse is almost between them.
The solid Iberian Hercynian od omini is formed mostly by Precambrian and Paleozoic rocks , aged over 290 million years. They are the rocks we see above The Vecilla.
The Alpine omini d comprises slightly compacted sediments and rocks generated during the Mesozoic and Tertiary (roughly between 250 and 2 million years). Materials are La Mata.
The boundary between the Cantabrian zone and the Duero basin is a line that goes La Magdalena, La Robla , Matallana, The Vecilla , Boñar, Cistierna ... and that coincides more or less, with the railway line and road FEVE CL-626.
why the rocks are very different. near La Mata , but in Cantabrian zone, which corresponds to Leon mountain, above the railway line, are the coalfields of Ciñera-Matallana and Sabero; limestone caves as Valporquero , Boñar stone that was useful for, among other buildings, the cathedral León Peña Valdorria ( 1927 meters) which is the highest peak seen from La Mata materials; silicate in Valdecastillo, which are used in the window of Leon talc mines Lillo, as well as marine fossils in Matallana, The Losi or Colle, showing that the area was submerged in the ocean millions of years ago.
In contrast, in La Mata and the banks of Curueño in iberia clay within the Duero basin , tertiary materials are covered with sheets siliceous conglomerates called frogs (d Edge epósito quartzite or clay mixed with sand, which lies at the foot of a mountain range or the edge of a sedimentation basin), are the mountains that we east and west of La Mata and staged by fluvial sediments in floodplain by erosion and fluvial deposits Curueño caused by the river, which cuts perpendicularly NS.
tertiary materials have a tabular, ie nearly horizontal. endorheic Filling the basin occurred in a continental setting, by siliciclastic material from silt conglomerates, alluvial systems that were coalescing into the center of the basin. The area is placed at the rejuvenated relief of the Palaeozoic massive margin.
terrigenous Tertiary sediments are known deeper Vegaquemada training, represented by fluvial sedimentary environments. Was deposited over the training Candanedo , consisting of a coalescence of alluvial fans, conglomerates polygenic with layers of mud, which are visible in the scarp of the river between Curueño La Mata and Santa Colomba, and are coated harsh, erosive the formation Barrillos, characterized by a set of fans coalescing alluvial, high efficiency of transport, transit siliceous conglomerate layers of sand and mud, which occupy most of the mountains of La Mata Area and represents the end of the Tertiary sedimentation.
late Tertiary there was a major climate change worldwide, who went from being dry to being wet heavy rains and acted as the principal agents of erosion, modeling and the current landscape of the area.
Finally, if we look, we see that the river has Curueño dissymmetrical margins, being the west a more stretched, which makes the river locks against the east bank of the mountain, so the well Pot or the well of the Asturian found along the escarpment of the mountain.
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