Friday September 8th, 2017

Stage 19Caso. Parque Natural de Redes / Gijón

Start 13h50 (Local time)
  • De Gendt, the expert strikes

    With a route designed for attackers, Thomas De Gendt (Lotto Soudal) enjoyed stage 19 of La Vuelta 2017 to snatch a third stage win on Grand Tours after the ones he already claimed on the Tour de France and Giro d'Italia. Always aggressive, the Belgian baroudeur took part in a 27 man breakaway and eventually dominated his companions in the streets of Gijon. Chris Froome (Team Sky) controlled the move from another never-tiring attacker, Alberto Contador (Trek-Segafredo), to make sure he'll...

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The stage in videos

video08/09/2017 

GoPro Highlights - Stage 19 - La Vuelta 2017

  • GoPro Highlights - Stage 19 - La Vuelta 2017
  • Summary - Stage 19 - La Vuelta 2017
  • Last kilometer - Stage 19 - La Vuelta 2017
  • km to go - Stage 19 - La Vuelta 2017
  • km to go - Stage 19 - La Vuelta 2017
  • km to go - Stage 19 - La Vuelta 2017
  • 71.7 km to go - Stage 19 - La Vuelta 2017
  • 94.7 km to go - Stage 19 - La Vuelta 2017

The stage in pictures

photo08/09/2017 

Davide Villella © Iimiwa

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Geodiversity

Geological asturias: 500 million years of history

Autumnal image of the Redes Natural Park © David Timbal / Creative Commons Attribution-Share Alike 3.0 Unported license.Peñarrubia Beach © Asturias Verde / Dominio público

Campo de Caso - Gijón

This stage crosses the entire Principality of Asturias from South to North, cutting across rocks of varying ages and origins, which allows us to briefly review the history of the peninsula. Between the departure and Nava, the route goes through slates, sandstones, conglomerate rocks and limestone rocks from the Carboniferous Period (359 - 300 million years ago, dark grey colours). After the town of Nava, and up until we reach Pola de Siero, we cross a significant tectonic accident that fragments the terrain and puts extremely diverse rocks in contact with each other.

Geologically, we start the route in what is known as the Región de Mantos, where we can see a series of ancient rocks that are arranged on top of much more modern ones, forming what we, in geology, call an overthrust formation. In this case, we have rocks that are 520 million years old (Cambrian Period) on top of rocks that are 315 million years old (Carboniferous Period).

Carboniferous, unsurprisingly, gets its name from carbon (or coal), as it was a time when forests became enormously developed and these large accumulations of plants resulted in layers of coal that have historically been exploited in the region. As an example, we have the Coto Bello Mines, in Aller, currently the object of landscape restoration.

Further along, after overcoming one of the stage's various ramps, we arrive at Nava, leaving behind the Paleozoic rocks and moving on to more modern ones, from 100-120 million years ago (Cretaceous). From Nava, the route heads West, leaving the Meso-Tertiary depression, a large valley where even more modern sediments flourish (Eocene, 56 million years ago) to our right. These sediments provide a better ground for human settlements, which explains why Oviedo, Pola de Siero and Nava are found along this depression.

From here onwards, the stage enters the slopes of Jurassic and Triassic materials (200-150 million years ago) in the last section of climbs and descents that will end in Gijón. Incidentally, Peñarrubia Beach in really a Jurassic abrasion platform (200 - 145 million years ago) where rocks form the beach surface.

Stage Term: Abrasion Platform

Abrasion is the term that describes the erosion produced by water or wind as they hit other materials with the sediments they carry. In coastal cliff areas, the waves cause abrasion, pushing the coastline inwards little by little, forming a flat surface just beneath the level of the waves.

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jersey wearers 2017

Classifications after the stage 21

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