Saint-Paul-la-Roche

Last updated
Saint-Paul-la-Roche
Saint-Paul-la-Roche village.JPG
A general view of Saint-Paul-la-Roche
Location of Saint-Paul-la-Roche
Saint-Paul-la-Roche
France location map-Regions and departements-2016.svg
Red pog.svg
Saint-Paul-la-Roche
Aquitaine-Limousin-Poitou-Charentes region location map.svg
Red pog.svg
Saint-Paul-la-Roche
Coordinates: 45°28′43″N0°59′59″E / 45.4786°N 0.9997°E / 45.4786; 0.9997 Coordinates: 45°28′43″N0°59′59″E / 45.4786°N 0.9997°E / 45.4786; 0.9997
Country France
Region Nouvelle-Aquitaine
Department Dordogne
Arrondissement Nontron
Canton Thiviers
Government
  Mayor (20202026) Didier Garnaudie
Area
1
39.22 km2 (15.14 sq mi)
Population
 (Jan. 2018) [1]
521
  Density13/km2 (34/sq mi)
Time zone UTC+01:00 (CET)
  Summer (DST) UTC+02:00 (CEST)
INSEE/Postal code
24481 /24800
Elevation165–342 m (541–1,122 ft)
(avg. 268 m or 879 ft)
1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries.

Saint-Paul-la-Roche (French pronunciation:  [sɛ̃ pɔl la ʁɔʃ] ; Limousin: Sent Pau la Ròcha), is a commune in the northeast of the Dordogne department in the Nouvelle-Aquitaine region in southwestern France. The commune is integrated into the Regional Natural Parc Périgord Limousin.

Contents

Etymology

The commune's name is derived from Saint Paul and the hamlet La Roche (the rock) referring to the white quartz rocks (La Roche Blanche) cropping out nearby.

Geography

Saint-Paul-la-Roche is situated 9 kilometers northeast of Thiviers and 5 kilometers west-southwest of Jumilhac-le-Grand. It is surrounded by the following communes:

Besides the main village the commune consists of the following hamlets, farms, mills and castles: Artis, Beauplat, Chalamant, Chandeuil, Château de Chalard, Château de Montardy, Château la Val(l)ade, Combier, Curmont, Eleix, Graffanaud, La Brousse, La Bussière, La Chassagne, La Croze, La Fagnade, La Farge, La Genetterie, La Grave, La Jarrige, La Lande de Beauplat, La Lande de la Peyzie, La Lande de Perrières, La Messeillasse, La Messelie, La Morandie, La Mouretie, La Papalie, La Petite Lande, La Petite Pouge, La Peyzie, La Pouille, La Pouyade d'Artis, La Renolphie, La Rivalie, La Roche, La Tuillère, La Val(l)ade, Lascombas, Lavaud, Le Chalard, Le Chalaret, Le Chatenet, Le Chêne Blanc, Le Goinaud, Le Grand Bois, Le Marguillier, Le Minaret, Le Moulin de la Brousse, Le Moulin de la Peyzie, Le Moulin du Breuilh, Le Petit Clos, (Le) Pierrefiche, Le Rieu Mort, Le Rouchoux de la Forêt, Les Pradelles de Chalamant, Les Pradelles de Lintignac, Lintignac, Paradinas, Poirier Bernard, Poirier Vachat, Pont-Fermier and Vialotte.

The southwest-flowing Isle River forms the southeastern boundary of the commune with Sarrazac and Jumilhac-le-Grand. The commune is drained in a southerly direction by the small river Rochille. Just before reaching the southern border the Rochille merges with the Valouse as its major left-hand tributary. The Valouse River traverses the western side of the commune's territory (following a south-southwesterly direction) and represents for several kilometers the boundary with Chalais. After its confluence with the Rochille it ends shortly after as a right-hand tributary to the Isle. Immediately after having touched the commune's perimeter in the southeast the Isle receives four small right-hand tributaries, whose valleys are oriented south-southeast. The Ruisseau de Curmont is also a small right-hand tributary to the Isle; yet its course runs west-east and defines the boundary to Nantheuil in the south. This small stream is paralleled farther north by the Ruisseau de la Val(lade) merging with the Valouse as a right-hand tributary.

The topographically lowest point within the commune at an altitude of 178 meters is found at the confluence of the Ruisseau de Curmont with the Isle; at this point the Isle leaves the commune's territory and continues southwest. The highest point with 342 meters above sea level is close to the hamlet La Lande des Perrières northeast of the village center.

Geology

Left-over quartz slabs from the quarry La Roche Blanche Saint-Paul-la-Roche site Roche blanche (1).JPG
Left-over quartz slabs from the quarry La Roche Blanche

Saint-Paul-la-Roche is living up to its name by offering a very diverse and rather complicated geology. The commune is situated entirely on the metamorphic basement rocks of the northwestern Massif Central. Structurally these rocks belong to three different thrust sheets, the Lower Gneiss Nappe, the Upper Gneiss Nappe and at the southwest corner the Thiviers-Payzac Unit. The Lower Gneiss Nappe mainly comprises micaschists associated with micaceous paragneisses, paragneisses and medium-grained leptynites, the Upper Gneiss Nappe is mainly composed of paragneisses enclosing some leptynites. The medium-grained leptynites within the Lower Gneiss Nappe form an arc-shaped structure, the so-called Saint-Yrieix arc. The micaschists are derived from argilites, the paragneisses most probably from Neoproterozoic greywackes and the micaceous paragneisses from more clay-rich greywackes. The leptynites have a granitic composition and either represent granites or rhyolites; they are of Ordovician age, thus very much younger than the enclosing country rocks.

The Thiviers-Payzac Unit to the southwest consists of the Payzac Quartzite, a less metamorphosed equivalent of the rhyodacitic Thiviers Sandstone. The steeply dipping, ESE-striking rocks of the Thiviers-Payzac Unit upthrust obliquely over the Upper Gneiss Unit with a right-lateral shearing component. The Upper Gneiss Unit strikes southwest-northeast and in turn overrides The Lower Gneiss Unit to the northwest, also showing a SW-NE strike.

Enclosed within the micaschists are basic and ultrabasic rocks of the Roche Noire Massif (near the hamlet La Valade), mainly metagabbros and peridotites. These are some of the very few remnants of oceanic crust left behind from a now subducted ocean. The Massif also exhibits several tectonic lenses of serpentinised peridotites, amphibolites and a bigger serpentinite body. Within the micaschists and the micaceous paragneisses there are streaks of garnet-bearing amphibolites, which in some places also invade the paragneisses. Epidote-bearing amphibolites occur as well, they are found in micaceous paragneisses near the cemetery, in leptynites near Lintignac and in the Payzac Quartzite near Curmont. Even some small eclogite outcrops do exist, for instance three near Graffanaud along the Valouse and one near Combier at the Isle.There are also some small bands of dacitic metatuffs enclosed within the paragneisses, the micaceous paragneisses and in the Payzac Quartzite.

An oddity is the massive quartz outcrop near La Roche which has been completely quarried by now. This very pure, milky exsudation quartz was once sought after by NASA for optical devices (lenses etc.). Under magnification one can observe many parallel shear planes of tectonic origin. The quarry once contained single quartz crystals in the decimeter and meter range.

The metamorphic conditions of the country rocks reached medium and high grade. The Payzac Quartzite has crossed the staurolite isograd, the Upper Gneiss Unit belongs mainly to the staurolite zone and parts of the Lower Gneiss Unit even have reached the kyanite isograd (near the village center and in the north).

The country rocks are traversed by three major north-south-striking faults (north of Chalamant, in the village center and near Le Rouchou de la Forêt), which offset the stratigraphy. The faults at Chalamant and Le Rouchou de la Forêt are brecciated and cataclastic. The latter is a major fault, it even cuts off tectonic units (like the oceanic Sarrazac Massif from the Upper Gneiss Unit); it can be traced to Sarrazac in the south, in the north it splays out.

Some of the higher ridges are mantled by Tertiary alterites, which consist mainly of Pliocene fluvial gravels (tongues near La Lande de Beauplat, La Lande de Perrières, La Petite Lande and Le Pierrefiche) and colluvium. The colluvium underlies the gravel tongues and probably dates back to the Eocene, but was later reworked during the Pleistocene (ice ages).

History

The ancient abode of the Knights Templar Saint-Paul-la-Roche maison templiere.JPG
The ancient abode of the Knights Templar

The Château de Chalard is mentioned for the first time in the 11th century. Most of it was destroyed during the Hundred Years War. The Romanesque village church of Saint-Paul-la-Roche dates back to the 12th century. The Château de Montardy was built during the 15th century on a site occupied before by a Knights Templar stronghold.

Population

Historical population
YearPop.±%
1962872    
1968794−8.9%
1975616−22.4%
1982591−4.1%
1990555−6.1%
1999551−0.7%
2008517−6.2%

Sights

Access

Close to the western boundary of the commune passes the major trunk road N 21 from Limoges to Périgueux. It is paralleled by the railway line Limoges – Thiviers. The southeastern and southern border is followed by the D 78 from Jumilhac-le-Grand to Thiviers. The D 67 comes from La Coquille, crosses the village center and continues to Sarrazac in the SSE. Several communal roads (C roads) join the village center with its many hamlets.

See also

Related Research Articles

Arrondissement of Nontron Arrondissement in Nouvelle-Aquitaine, France

The arrondissement of Nontron is an arrondissement of France in the Dordogne department in the Nouvelle-Aquitaine region. It has 94 communes. Its population is 54,758 (2016), and its area is 2,097.7 km2 (809.9 sq mi).

Savignac-Lédrier Commune in Nouvelle-Aquitaine, France

Savignac-Lédrier is a commune in the Dordogne department of Nouvelle-Aquitaine in southwestern France.

Auvézère

The Auvézère is a 112 km long river in the region Nouvelle-Aquitaine, France. It is a tributary of the river Isle, which is itself a tributary of the Dordogne.

Saint-Pardoux-la-Rivière Commune in Nouvelle-Aquitaine, France

Saint-Pardoux-la-Rivière is a commune in the Dordogne department in Nouvelle-Aquitaine in southwestern France. It forms part of the Parc naturel régional Périgord Limousin.

The Parc naturel régional Périgord Limousin was created March 9, 1998. It consists of 78 communes situated in the Dordogne and Haute Vienne départements. The park has a surface area of 1800 square kilometers and is inhabited by 49 661 people.

The Piégut-Pluviers Granodiorite is situated at the northwestern edge of the Variscan Massif Central in France. Its cooling age has been determined as 325 ± 14 million years BP.

The Massif Central is one of the two large basement massifs in France, the other being the Armorican Massif. The Massif Central's geological evolution started in the late Neoproterozoic and continues to this day. It has been shaped mainly by the Caledonian orogeny and the Variscan orogeny. The Alpine orogeny has also left its imprints, probably causing the important Cenozoic volcanism. The Massif Central has a very long geological history, underlined by zircon ages dating back into the Archaean 3 billion years ago. Structurally it consists mainly of stacked metamorphic basement nappes.

The Canaveilles Group is the basal metasedimentary succession of late Neoproterozoic and Cambrian age outcropping in the Pyrenees.

The Thiviers-Payzac Unit is a metasedimentary succession of late Neoproterozoic and Cambrian age outcropping in the southern Limousin in France. The unit geologically forms part of the Variscan basement of the northwestern Massif Central.

The Neuil Mine, in French Mine de Neuil, is a mine emplaced in paragneisses of the northwestern Massif Central. The mine is part of the commune of Saint-Pardoux-la-Rivière in the Dordogne. Extracted from the mine was galena, slightly enriched in silver.

The Cantonnier lode formed in the Piégut-Pluviers Granodiorite, part of the basement rocks of the northwestern Massif Central in France. Its importance is highlighted by very rare mineral parageneses.

The Merlis Serpentinites are an aligned group of small serpentinite outcrops in the northwestern French Massif Central. Their parent rocks were peridotites from the upper mantle.

The Saint-Mathieu dome is a dome-like upwarp in the metamorphic basement of the northwestern French Massif Central. It exposes a very deep and normally hidden parautochthonous unit at the surface.

The Canton of Isle-Loue-Auvézère is a canton of the Dordogne département, in France. It was created at the French canton reorganisation, which came into effect in March 2015, from the former canton of Lanouaille and parts of the former cantons of Excideuil, Savignac-les-Églises, Thenon and Hautefort. Its seat is the town Excideuil.

The canton of Thiviers is an administrative division of the Dordogne department, southwestern France. Its borders were modified at the French canton reorganisation which came into effect in March 2015. Its seat is in Thiviers.

Geology of the Democratic Republic of the Congo

The geology of the Democratic Republic of the Congo is extremely old, on the order of several billion years for many rocks. The country spans the Congo Craton: a stable section of ancient continental crust, deformed and influenced by several different mountain building orogeny events, sedimentation, volcanism and the geologically recent effects of the East Africa Rift System in the east. The country's complicated tectonic past have yielded large deposits of gold, diamonds, coltan and other valuable minerals.

The geology of Niger comprises very ancient igneous and metamorphic crystalline basement rocks in the west, more than 2.2 billion years old formed in the late Archean and Proterozoic eons of the Precambrian. The Volta Basin, Air Massif and the Iullemeden Basin began to form in the Neoproterozoic and Paleozoic, along with numerous ring complexes, as the region experienced events such as glaciation and the Pan-African orogeny. Today, Niger has extensive mineral resources due to complex mineralization and laterite weathering including uranium, molybdenum, iron, coal, silver, nickel, cobalt and other resources.

Geology of Kazakhstan

The geology of Kazakhstan includes extensive basement rocks from the Precambrian and widespread Paleozoic rocks, as well as sediments formed in rift basins during the Mesozoic.

The geology of South Korea includes rocks dating to the Archean and two large massifs of metamorphic rock as the crystalline basement, overlain by thick sedimentary sequences, younger metamorphic rocks and volcanic deposits.

Nontronnais Natural region in Nouvelle-Aquitaine

The Nontronnais is a natural region in the northern Dordogne département and therefore part of Nouvelle-Aquitaine. It covers the surrounding of the centrally placed subprefecture Nontron. Jules Verne had called the Nontronnais Périgord vert referring to the region's lush vegetation. The term Périgord vert is used mainly in tourism, but is not identical with the Nontronnais, which covers a much smaller area.

References

  1. "Populations légales 2018". INSEE. 28 December 2020.

Literature