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Devès Massif
The Devès is a vast basalt plateau in the Velay mountains of the Massif Central, located in Haute-Loire, forming a natural region of France. It reaches its highest point at Mont Devès at an altitude of 1,421 meters. Toponomy Devès is an Occitan term that refers to a "forbidden forest, protected," meaning it is not exploited. Geography Location The Devès is bordered to the west by the upper Allier valley and the Margeride mountains, to the north by the Livradois mountains, to the northeast by the Meygal massif, and to the east by the upper Loire valley and the Vivarais mountains. Geology The Devès massif, which is more of a high plateau, is one of the three volcanic massifs of Velay, the other two being the Mézenc massif and the Meygal. It is the largest basalt plateau in the Massif Central. The first eruptions are dated to 6 million years ago, but most of the volcanic activity occurred between 3.5 and 0.6 million years ago, with two peaks at 1 and 2 mil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mont Devès
Mont Devès is a volcanic peak reaching an altitude of 1,421 meters in the Departments of France, French department of Haute-Loire. It is the highest point of the Devès massif in the Massif Central. Geography Mont Devès is located in the Devès massif, where it is the highest point, within the Massif Central. A Radio repeater, relay antenna is situated at its summit.''Institut Géographique National, IGN maps'' available oGéoportail/ref> References Mountains of the Massif Central Mountains of Haute-Loire {{Mountain-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Types Of Volcanic Eruptions
A volcanic eruption occurs when material is expelled from a volcanic vent or fissure vent, fissure. Several types of volcanic eruptions have been distinguished by volcanologists. These are often named after famous volcanoes where that type of behavior has been observed. Some volcanoes may exhibit only one characteristic type of eruption during a period of activity, while others may display an entire sequence of types all in one eruptive series. There are three main types of volcanic eruptions. Magmatic eruptions involve the decompression of gas within magma that propels it forward. Phreatic eruptions are driven by the superheating of steam due to the close proximity of magma. This type exhibits no magmatic release, instead causing the granulation (process), granulation of existing rock. Phreatomagmatic eruptions are driven by the direct interaction of magma and water, as opposed to phreatic eruptions, where no fresh magma reaches the surface. Within these broad eruptive types ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Camelina Microcarpa
''Camelina microcarpa'' is a species of flowering plant in the mustard family known by several common names, including littlepod false flax lesser gold-of-pleasure and small seed false flax. It is native to Europe and Asia, and it is common across the globe as an introduced species and sometimes a noxious weed. It is known as a weed of grain crops such as wheat and rye. This is an erect annual herb producing a branched or unbranched stem 30 centimeters to one meter in height. It is sometimes coated thinly in hairs, particularly on the lower part. The leaves are lance-shaped to oblong. The upper part of the stem is occupied by an inflorescence of many pale yellow flowers. They yield plump oblong to rounded fruits, each under a centimeter long and held at the tip of a short pedicel Pedicle or pedicel may refer to: Human anatomy *Pedicle of vertebral arch, the segment between the transverse process and the vertebral body, and is often used as a radiographic marker and entry point i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neslia Paniculata
''Neslia'' is a monotypic plant genus in the family Brassicaceae. The only extant species is ''Neslia paniculata'' Neslia paniculata ''Neslia paniculata'' (commonly called ball mustard) is a plant species in the family Brassicaceae. The name comes from the ball-shaped fruits that contain a single seed within an indehiscent fruit coat. It is an annual where the seeds germinate in autumn to winter and grow into a flattened rosette of leaves that develop vertical flowering stems in the spring. These can be up to 1 metre tall. The flowers open in late spring/early summer and the seeds are mature by summer. It is a native plant of temperate regions of Eurasia. It can also be found in much of the northern and southern regions of the Americas, Australia and also Britain Britain most often refers to: * Great Britain, a large island comprising the countries of England, Scotland and Wales * The United Kingdom of Great Britain and Northern Ireland, a sovereign state in Europe comprising G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blizzard
A blizzard is a severe Winter storm, snowstorm characterized by strong sustained winds and low visibility, lasting for a prolonged period of time—typically at least three or four hours. A ground blizzard is a weather condition where snow that has already fallen is being blown by wind. Blizzards can have an immense size and usually stretch to hundreds or thousands of kilometres. Definition and etymology In the United States, the National Weather Service defines a blizzard as a severe snow Winter storm, storm characterized by strong winds causing blowing snow that results in low visibilities. The difference between a blizzard and a snowstorm is the strength of the wind, not the amount of snow. To be a blizzard, a snow storm must have sustained winds or frequent gusts that are greater than or equal to with blowing or drifting snow which reduces visibility to or less and must last for a prolonged period of time—typically three hours or more. Environment and Climate Chang ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burle
The burle is the name given to the north wind that blows in the winter in the south-central part of France, east of the Massif Central, on the bare plateaus of Velay, Ardèche, or the Forez mountains. The burle is a winter wind that usually blows in already cold regions. The resulting perceived temperature is often particularly low, creating a chilling atmosphere. When the region is snowy, the burle can be responsible for the formation of snowdrifts. The "Triangle de la Burle" is an expression popularized by the journalist Jean Peyrard in the 1980s to describe an area between the Pilat Massif near Saint-Étienne, Puy-en-Velay, and Mont Mézenc where many air disasters are said to have occurred over the past century. See also * List of local winds This is a list of names given to winds local to specific regions. Africa * Berg wind, a seasonal katabatic wind blowing down the Great Escarpment from the high central plateau to the coast in South Africa. * Cape Doctor, often p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mounts Of Cantal
The Mounts of Cantal (or Volcanoes of Cantal; ) are a mountainous massif in the mid-west of the Massif Central, France, made up of the remnants of the largest stratovolcano of Europe, which was formed from 13 million years ago and last erupted approximately 2 million years ago, reaching estimated heights between 3,500 and 4,000 meters. However, the main part of the volcanic activity was concentrated between 8.5 and 7 million years. Thereafter, the original volcano was largely eroded, massive landslides occurred, and it was further eroded by glaciers and water. Geomorphology The stratovolcano of Cantal is the widest in Europe. It is roughly circular with a diameter between . Its highest point is the Plomb du Cantal (), located in the eastern part of the massif. Around 20 valleys have been formed in the range, radiating out from the centre and cutting the basaltic plateau into triangular pieces called '' planèzes''. These valleys were occupied by glaciers during the last ice ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
La Durande
La Durande, a lava dome, is one of the highest volcanic peaks in France and peaks at 1299 metres. It rises from the Limagne The Limagne (; ) is a large plain in the Auvergne, Auvergne region of France in the valley of the Allier (river), Allier river, on the edge of the Massif Central. It mainly lies within the ''departments of France, départements'' of Puy-de-Dôme, ... valley and dominates the local area. An oak cross marked at the peak for centuries, however after the wooden cross was destroyed by storm, the commune replaced it with a larger stone cross, with a map and viewpoint erected in the 1990s. Mountains of the Massif Central Mountains of Haute-Loire {{HauteLoire-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pine
A pine is any conifer tree or shrub in the genus ''Pinus'' () of the family Pinaceae. ''Pinus'' is the sole genus in the subfamily Pinoideae. ''World Flora Online'' accepts 134 species-rank taxa (119 species and 15 nothospecies) of pines as current, with additional synonyms, and ''Plants of the World Online'' 126 species-rank taxa (113 species and 13 nothospecies), making it the largest genus among the conifers. The highest species diversity of pines is found in Mexico. Pines are widely species distribution, distributed in the Northern Hemisphere; they occupy large areas of boreal forest, but are found in many habitats, including the Mediterranean Basin, and dry tropical forests in southeast Asia and Central America. Wood from pine trees is one of the most extensively used types of timber, and some pines are widely used as Christmas trees. Description Pine trees are evergreen, coniferous resinous trees (or, rarely, shrubs) growing tall, with the majority of species reachin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lac Du Bouchet
__NOTOC__ Bouchet lake (or Lake of Bouchet; French: ''Lac du Bouchet'') is located in Haute-Loire, France, near Le Puy-en-Velay, in the Devès massif. It is about 1.6 km (one mile) north of the village of Le Bouchet-Saint-Nicolas. It is situated within the territories of the communes of Cayres and Le Bouchet-Saint-Nicolas. Bouchet is a crater lake Crater Lake ( Klamath: ) is a volcanic crater lake in south-central Oregon in the Western United States. It is the main feature of Crater Lake National Park and is a tourist attraction for its deep blue color and water clarity. T ... formed from an old volcano, and thus roughly circular. It is a little more than half a mile from rim to rim and surrounded by woodlands. It is at an altitude of 1,208 m (3,963 feet). External links Lake of Bouchet picture. Bouchet Landforms of Haute-Loire Bouchet {{HauteLoire-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Depression (geology)
In geology, a depression is a landform sunken or depressed below the surrounding area. Depressions form by various mechanisms. Types Erosion-related: * Blowout (geomorphology), Blowout: a depression created by Aeolian processes, wind erosion typically in either a partially vegetated Dune, sand dune ecosystem or dry soils (such as a post-glacial loess environment). * Glacial valley: a depression carved by erosion by a glacier. * River valley: a depression carved by fluvial erosion by a river. * Area of subsidence caused by the collapse of an underlying structure, such as sinkholes in karst terrain. * Sink (geography), Sink: an endorheic depression generally containing a wikt:persistent, persistent or intermittent (seasonal) lake, a Salt pan (geology), salt flat (playa) or dry lake, or an ephemeral lake. * Panhole: a shallow depression or basin eroded into flat or gently sloping, cohesive rock.Twidale, C.R., and Bourne, J.A., 2018Rock basins (gnammas) revisited.''Géomorphologie: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maar
A maar is a broad, low-relief volcanic crater caused by a phreatomagmatic eruption (an explosion which occurs when groundwater comes into contact with hot lava or magma). A maar characteristically fills with water to form a relatively shallow crater lake, which may also be called a maar.David S.G. Thomas and Andrew Goudie (eds.), ''The Dictionary of Physical Geography'' (Oxford: Blackwell, 2000), 301. . Maars range in size from across and from deep. Most maars fill with water to form natural lakes. Most maars have low rims composed of a mixture of loose fragments of volcanic rocks and rocks torn from the walls of the diatreme. Etymology The name ''maar'' comes from a Moselle Franconian dialect word used for the circular lakes of the Daun area of Germany. The word evolved from its first use in German in the modern geological sense in 1819 and is now used in English and in the geological sciences as the term for the explosion crater, even if water from rainfall might alway ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
