Jura Mountains


The Jura Mountains are a sub-alpine mountain range located north of the Western Alps, mainly following the course of the France–Switzerland border.
The Jura separates the Rhine and Rhône basins, forming part of the watershed of each.
The name "Jura" is derived from juria, a Latinized form of a Celtic stem jor- "forest".
The mountain range gives its name to the French department of Jura, the Swiss Canton of Jura, the Jurassic period of the geologic timescale, and the Montes Jura of the Moon.

Physiography

The Jura Mountains are a distinct province of the larger Central European uplands.
In France, the Jura covers most of the Franche-Comté region, stretching south into the Rhône-Alpes region. The range reaches its highest point at Le Crêt de la Neige in the department of Ain and finds its southern terminus in the northwestern part of the department of Savoie. The north end of the Jura extends into the southern tip of the Alsace region. Roughly of the mountain range in France is protected by the Jura Mountains Regional Natural Park.
The Swiss Jura is one of the three distinct geographical regions of Switzerland, the others being the Swiss plateau and the Swiss Alps.
In Switzerland, the range covers the western border with France in the cantons of Basel-Landschaft, Solothurn, Jura, Bern, Neuchâtel and Vaud.
Much of the Swiss Jura region has no historical association with Early Modern Switzerland and was incorporated as part of the Swiss Confederacy only in the 19th century. In the 20th century, a movement of Jurassic separatism developed which resulted in the creation of the canton of Jura in 1979.
The Swiss Jura has been industrialized since the 18th century and became a major centre of the watchmaking industry. The area has several cities at very high altitudes, such as La Chaux-de-Fonds, Le Locle, and Sainte-Croix ; however, it generally has had a marked decline in population since 1960.
The Jura range proper is continued as the Table Jura in the cantons of Basel-Landschaft and Aargau, and further to Schaffhausen and into southern Germany towards the Swabian and Franconian plateaus.

Geology

The range is built up vertically while decreasing in size laterally. This deformation accommodates the compression from alpine folding as the main Alpine orogenic front moves roughly northwards. The deformation becomes less pervasive away from the younger, more active Alpine mountain building.
The geologic folds comprise three major bands of building that date from three epochs: the Lias, the Dogger and the Malm geologic periods. Each era of folding reveals effects of previously shallow marine environments as evidenced by beds with carbonate sequences, containing abundant bioclasts and oolitic divisions between layers.
Structurally, the Jura consists of a sequence of geologic folds, the formation of which is facilitated by an evaporitic decollement layer. The box folds are still relatively young, which is evident by the general shape of the landscape showing that they have not existed long enough to experience erosion, thus revealing recent mountain building.
The highest peak in the Jura range is Le Crêt de la Neige at.
The Jura range offer a variety of tourist activities including hiking, cycling, downhill skiing and cross-country skiing. There are many signposted trails including the Jura ridgeway, a hiking route.
Tourist attractions include natural features such as the Creux du Van, lookout peaks such as the Chasseral, caves such as the Grottes de l'Orbe, and gorges such as Taubenloch.
Both Le Locle and its geographical twin town La Chaux-de-Fonds are recognised as an UNESCO World Heritage Site for their horological and related cultural past. The 11th-century Fort de Joux, famously remodeled and strengthened by Vauban in 1690 and subsequently by other military engineers, is situated on a natural rock outcropping in the middle of the range not far from Pontarlier.
Part of the A40 autoroute crosses through a portion of the southern Jura between Bourg-en-Bresse and Bellegarde-sur-Valserine, which is known as the "Highway of the Titans".