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Pic De La Cascade Occidental
The Cascade Peaks are three summits in the Monte Perdido Range of the Pyrenees, culminating at on the eastern peak. The central peak, known as Brulle, and the western peak are and high, respectively. The peaks are located on the 3,000 m French-Spanish borderline crest. Toponymy The central summit was named in honor of Henri Brulle. Geography The peaks are part of the Monte Perdido Range above the Cirque de Gavarnie. The peaks are located in the Hautes-Pyrénées department, in the Midi-Pyrénées region of France, and in Huesca province, in the Aragon region of Spain. Geology The summit is composed of massive algae sediments, miliolitic sediments (eolianite) and sandstone sediments from the Eocene The Eocene ( ) Epoch is a geological epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period in the modern Cenozoic Era. The name ''Eocene'' comes from the Ancient Greek (''ēṓs'', " ... and Oligocene perio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Géoportail
Géoportail is a comprehensive web mapping service of the French government that publishes maps and geophysical aerial photographs from more than 90 sources for France and its territories. The service, first developed by two public agencies (the IGN and the BRGM), was officially inaugurated on 23 June 2006 by president Jacques Chirac. Though the French service has sometimes been described as a competitor or rival to Google Maps, it is different from Google's mapping service (launched one year before in February 2005), since they have different objectives. Geoportail makes some unusual cartographic sources available, such as the renowned 18th-century Cassini maps and the Napoléonic-period Minutes État-Major, in addition to IGN road maps, administrative maps, topographic maps, cadastral and building surveys, public service utility maps, transportation maps, hydrographic maps, atmospheric and weather maps, geological maps, land use maps, maps of cultural sites, and much more. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountains Of Hautes-Pyrénées
A mountain is an elevated portion of the Earth's crust, generally with steep sides that show significant exposed bedrock. Although definitions vary, a mountain may differ from a plateau in having a limited summit area, and is usually higher than a hill, typically rising at least 300 metres (1,000 feet) above the surrounding land. A few mountains are isolated summits, but most occur in mountain ranges. Mountains are formed through tectonic forces, erosion, or volcanism, which act on time scales of up to tens of millions of years. Once mountain building ceases, mountains are slowly leveled through the action of weathering, through slumping and other forms of mass wasting, as well as through erosion by rivers and glaciers. High elevations on mountains produce colder climates than at sea level at similar latitude. These colder climates strongly affect the ecosystems of mountains: different elevations have different plants and animals. Because of the less hospitable terrain ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountains Of The Pyrenees
A mountain is an elevated portion of the Earth's crust, generally with steep sides that show significant exposed bedrock. Although definitions vary, a mountain may differ from a plateau in having a limited summit area, and is usually higher than a hill, typically rising at least 300 metres (1,000 feet) above the surrounding land. A few mountains are isolated summits, but most occur in mountain ranges. Mountains are formed through tectonic forces, erosion, or volcanism, which act on time scales of up to tens of millions of years. Once mountain building ceases, mountains are slowly leveled through the action of weathering, through slumping and other forms of mass wasting, as well as through erosion by rivers and glaciers. High elevations on mountains produce colder climates than at sea level at similar latitude. These colder climates strongly affect the ecosystems of mountains: different elevations have different plants and animals. Because of the less hospitable terrain ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oligocene
The Oligocene ( ) is a geologic epoch of the Paleogene Period and extends from about 33.9 million to 23 million years before the present ( to ). As with other older geologic periods, the rock beds that define the epoch are well identified but the exact dates of the start and end of the epoch are slightly uncertain. The name Oligocene was coined in 1854 by the German paleontologist Heinrich Ernst Beyrich from his studies of marine beds in Belgium and Germany. The name comes from the Ancient Greek (''olígos'', "few") and (''kainós'', "new"), and refers to the sparsity of extant forms of molluscs. The Oligocene is preceded by the Eocene Epoch and is followed by the Miocene Epoch. The Oligocene is the third and final epoch of the Paleogene Period. The Oligocene is often considered an important time of transition, a link between the archaic world of the tropical Eocene and the more modern ecosystems of the Miocene. Major changes during the Oligocene included a global expansi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eocene
The Eocene ( ) Epoch is a geological epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period in the modern Cenozoic Era. The name ''Eocene'' comes from the Ancient Greek (''ēṓs'', " dawn") and (''kainós'', "new") and refers to the "dawn" of modern ('new') fauna that appeared during the epoch. The Eocene spans the time from the end of the Paleocene Epoch to the beginning of the Oligocene Epoch. The start of the Eocene is marked by a brief period in which the concentration of the carbon isotope 13C in the atmosphere was exceptionally low in comparison with the more common isotope 12C. The end is set at a major extinction event called the ''Grande Coupure'' (the "Great Break" in continuity) or the Eocene–Oligocene extinction event, which may be related to the impact of one or more large bolides in Siberia and in what is now Chesapeake Bay. As with other geologic periods, the strata that define the start and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sandstone
Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains. Sandstones comprise about 20–25% of all sedimentary rocks. Most sandstone is composed of quartz or feldspar (both silicates) because they are the most resistant minerals to weathering processes at the Earth's surface. Like uncemented sand, sandstone may be any color due to impurities within the minerals, but the most common colors are tan, brown, yellow, red, grey, pink, white, and black. Since sandstone beds often form highly visible cliffs and other topographic features, certain colors of sandstone have been strongly identified with certain regions. Rock formations that are primarily composed of sandstone usually allow the percolation of water and other fluids and are porous enough to store large quantities, making them valuable aquifers and petroleum reservoirs. Quartz-bearing sandstone can be changed into quartzite through metamorphism, usually relate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eolianite
Eolianite or aeolianite is any rock formed by the lithification of sediment deposited by aeolian processes; that is, the wind. In common use, however, the term refers specifically to the most common form of eolianite: coastal limestone consisting of carbonate sediment of shallow marine biogenic origin, formed into coastal dunes by the wind, and subsequently lithified. It is also known as kurkar in the Middle East, miliolite in India and Arabia, and grès dunaire in the eastern Mediterranean. eolianite has a hardness of 4.3 and is very dull. Streak is light brown. Description Sayles coined the term in 1931, when he described the dune-shaped hills of Bermuda, consisting of bioclastic grainstones. Thus, Bermuda is considered the type locality for carbonate eolianite facies, with clearly defined cross-bedding, foresets, and topsets. Deposition is controlled by glacio-eustatic changes, with eolianites forming during interglaciations. Eolianites occur along the margins of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sediment
Sediment is a naturally occurring material that is broken down by processes of weathering and erosion, and is subsequently transported by the action of wind, water, or ice or by the force of gravity acting on the particles. For example, sand and silt can be carried in suspension in river water and on reaching the sea bed deposited by sedimentation; if buried, they may eventually become sandstone and siltstone ( sedimentary rocks) through lithification. Sediments are most often transported by water ( fluvial processes), but also wind (aeolian processes) and glaciers. Beach sands and river channel deposits are examples of fluvial transport and deposition, though sediment also often settles out of slow-moving or standing water in lakes and oceans. Desert sand dunes and loess are examples of aeolian transport and deposition. Glacial moraine deposits and till are ice-transported sediments. Classification Sediment can be classified based on its grain size, grain s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aragon
Aragon ( , ; Spanish and an, Aragón ; ca, Aragó ) is an autonomous community in Spain, coextensive with the medieval Kingdom of Aragon. In northeastern Spain, the Aragonese autonomous community comprises three provinces (from north to south): Huesca, Zaragoza, and Teruel. Its capital is Zaragoza. The current Statute of Autonomy declares Aragon a '' historic nationality'' of Spain. Covering an area of , the region's terrain ranges diversely from permanent glaciers to verdant valleys, rich pasture lands and orchards, through to the arid steppe plains of the central lowlands. Aragon is home to many rivers—most notably, the river Ebro, Spain's largest river in volume, which runs west–east across the entire region through the province of Zaragoza. It is also home to the highest mountains of the Pyrenees. , the population of Aragon was , with slightly over half of it living in its capital city, Zaragoza. In 2020, the economy of Aragon generated a GDP of million, whi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Province Of Huesca
Huesca ( an, Uesca, ca, Osca), officially Huesca/Uesca, is a province of northeastern Spain, in northern Aragon. The capital is Huesca. Positioned just south of the central Pyrenees, Huesca borders France and the French Departments of Haute-Garonne, Pyrénées-Atlantiques and Hautes-Pyrénées. Within Spain, Huesca's neighboring provinces are Navarre, Zaragoza and Lleida. Geography Covering a primarily mountainous area of km², the province of Huesca has a total population of in 2018, with almost a quarter of its people living in the capital city of Huesca. The low population density, 14.62/km², has meant that Huesca's lush valleys, rivers, and lofty mountain ranges have remained relatively pristine and unspoiled by progress. Home to majestic scenery, the tallest mountain in the Pyrenees, the Aneto; eternal glaciers, such as at Monte Perdido; and the National Park of Ordesa and Monte Perdido, rich in flora and protected fauna. Popular with mountaineers, spelunkers, pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cirque De Gavarnie
__NOTOC__ The Cirque de Gavarnie is a cirque in the central Pyrenees, in Southwestern France, close to the border of Spain. It is within the commune of Gavarnie, the department of Hautes-Pyrénées, and the Pyrénées National Park. Major features of the cirque are La Brèche de Roland (English: Roland's Pass) and the Gavarnie Falls. It was described by Victor Hugo as "the Colosseum of nature" due to its enormous size and horseshoe shape resembling an ancient amphitheatre. The cirque was inscribed on the UNESCO World Heritage List in 1997 as part of the Pyrénées – Mont Perdu World Heritage Site. The cirque is 800 m wide (on the deepest point) and about 3,000 m wide at the top. The rock walls that surround it are up to above the floor of the Cirque. During the warmer seasons of spring, summer and fall, there are a number of large meltwater falls that spill into the cirque. The largest of these is Gavarnie Falls, the second-highest waterfall in Europe. It descends some ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saunders_Quarry-1.jpg "Click for more on -> Sandstone")
