|
Chott El Djem
In geology, a chott, shott, or shatt (; ar, شط, šaṭṭ, lit=bank, coast) is a salt lake in Africa's Maghreb that stays dry for much of the year but receives some water in the winter. The elevation of a chott surface is controlled by the position of the water table and capillary fringe, with sediment deflation occurring when the water table falls and sediment accumulation occurring when the water table rises.Swezey, C.S., 2003, The role of climate in the creation and destruction of continental stratigraphic records: An example from the northern margin of the Sahara Desert, in Cecil, C.B., and Edgar, N.T., eds., Climate Controls on Stratigraphy: SEPM (Society for Sedimentary Geology) Special Publication 77, p. 207-225. They are formed—within variable shores—by the spring thaw from the Atlas mountain range, along with occasional rainwater or groundwater sources in the Sahara, such as the Bas Saharan Basin. Water sources The chotts of the Sahara are fed intermittently ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geology
Geology () is a branch of natural science concerned with Earth and other astronomical objects, the features or rocks of which it is composed, and the processes by which they change over time. Modern geology significantly overlaps all other Earth sciences, including hydrology, and so is treated as one major aspect of integrated Earth system science and planetary science. Geology describes the structure of the Earth on and beneath its surface, and the processes that have shaped that structure. It also provides tools to determine the relative and absolute ages of rocks found in a given location, and also to describe the histories of those rocks. By combining these tools, geologists are able to chronicle the geological history of the Earth as a whole, and also to demonstrate the age of the Earth. Geology provides the primary evidence for plate tectonics, the evolutionary history of life, and the Earth's past climates. Geologists broadly study the properties and processes of E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geology Of Mars
The geology of Mars is the scientific study of the surface, crust, and interior of the planet Mars. It emphasizes the composition, structure, history, and physical processes that shape the planet. It is analogous to the field of terrestrial geology. In planetary science, the term ''geology'' is used in its broadest sense to mean the study of the solid parts of planets and moons. The term incorporates aspects of geophysics, geochemistry, mineralogy, geodesy, and cartography. A neologism, areology, from the Greek word ''Arēs'' (Mars), sometimes appears as a synonym for Mars's geology in the popular media and works of science fiction (e.g. Kim Stanley Robinson, Kim Stanley Robinson's Mars trilogy). The term areology is also used by the Areological Society. Geological map of Mars (2014) File:Geologic Map of Mars figure2.pdf, Figure 2 for the geologic map of Mars Global Martian topography and large-scale features Composition of Mars Mars is a terrestrial planet, whic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nouakchott
, image_skyline = Nouakchott.jpg , image_caption = City view of Nouakchott , pushpin_map = Mauritania#Arab world#Africa , pushpin_relief = 1 , mapsize = , map_caption = Map of Mauritania showing Nouakchott , subdivision_type = Country , subdivision_name = , subdivision_type1 = Capital district , subdivision_name1 = Nouakchott , leader_title = Council president , leader_name = Fatimatou Abdel Malick , population_as_of = 2019 census , population_total = 1,195,600 , area_total_km2 = 1000 , population_density_km2 = auto , area_total_sq_mi = 400 , coordinates = , coordinates_footnotes = , elevation_m = 7 , elevation_ft = , website = , settlement_type = Capital city Nouakchott (; ; ar, نواكشوط; ber, label= Berber, ital ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shatt Al-Arab
The Shatt al-Arab ( ar, شط العرب, lit=River of the Arabs; fa, اروندرود, Arvand Rud, lit=Swift River) is a river of some in length that is formed at the confluence of the Euphrates and Tigris rivers in the town of al-Qurnah in the Basra Governorate of southern Iraq. The southern end of the river constitutes the Iran–Iraq border down to its mouth, where it discharges into the Persian Gulf. The Shatt al-Arab varies in width from about at Basra to at its mouth. It is thought that the waterway formed relatively recently in geological time, with the Tigris and Euphrates originally emptying into the Persian Gulf via a channel further to the west. Kuwait's Bubiyan Island is part of the Shatt al-Arab delta. The Karun, a tributary which joins the waterway from the Iranian side, deposits large amounts of silt into the river; this necessitates continuous dredging to keep it navigable. The area used to hold the largest date palm forest in the world. In the mid-1970s, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sabkha
A sabkha ( ar, سبخة) is a coastal, supratidal mudflat or sandflat in which evaporite-saline minerals accumulate as the result of semiarid to arid climate. Sabkhas are gradational between land and intertidal zone within restricted coastal plains just above normal high-tide level. Within a sabkha, evaporite-saline minerals sediments typically accumulate below the surface of mudflats or sandflats. Evaporite-saline minerals, tidal-flood, and aeolian deposits characterize many sabkhas found along modern coastlines. The accepted type locality for a sabkha is at the southern coast of the Persian Gulf, in the United Arab Emirates.Neuendorf, K.K.E., J.P. Mehl, Jr., and J.A. Jackson, eds. (2005) ''Glossary of Geology'' (5th ed.). Alexandria, Virginia, American Geological Institute. 779 pp. Tucker, M.E. and Wright, V.P., 2009. ''Carbonate sedimentology.'' John Wiley & Sons. and Warren, J.K., 2006. Evaporites: sediments, resources and hydrocarbons. Springer Science & Business Media.Wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Djerid
el-Djerid, also al-Jarīd, ( ar, الجريد; Derja: ''Jerīd''; ) or more precisely the South Western Tunisia Region is a semi-desert natural region comprising three southern Tunisian Governorates, Gafsa, Kebili and Tozeur with adjacent parts of Algeria and Libya. Geography The region is characterised by bare pink hills with oases and several chotts (salt pans) such as Chott el Djerid in Tunisia. Economically the area is important for phosphate mining. Major towns include Gafsa and Tozeur. It remains the principal center of Ibāḍism in North Africa, with remaining Ibāḍī communities on Djerba in Tunisia, in the M'zab in Algeria, and in Jabal Nafusa in Libya. In medieval times, it often formed a politically separate entity under the control of Ibāḍī ''imams''. Location Jerid, Djerid'' or ''Bled el Djerid (Arabic : الجريد, literally "palm leaf"), is a semi-desert region situated in southwestern Tunisia, which extends to the contiguous areas of Algeria. In admini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shatt Al Gharsah
Shatt al Gharsah, Chott el Gharsa (Arabic language شط الغرسة) is sedimentary basin and also intermittent salt lake in Tunisia ) , image_map = Tunisia location (orthographic projection).svg , map_caption = Location of Tunisia in northern Africa , image_map2 = , capital = Tunis , largest_city = capital , .... It has width of 20 kilometres and length of 50 kilometres. At 17 metres under sea level it is at the lowest point of the country. References {{Authority control Lakes of Tunisia Saline lakes of Africa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chott El Hodna
The ''Chott el Hodna'' ( ar, شط الحضنة) is a very shallow saline lake in Algeria. It is located within an endorheic basin in the Hodna region, towards the eastern end of the ''Hautes Plaines''. The ''Chott el Hodna'' includes seasonal brackish and saline pools and marshes, but the central zone of the lake is characterized by a complete absence of vegetation. J. Despois argues that the ''Chott el Hodna'' is not a proper '' Chott'', but a '' Sebkha''. Ecology The ''chott'' area provides an important habitat for certain endangered species such as the Cuvier's gazelle, the marbled duck and different kinds of bustards, as well as indigenous fish species. The ''Chott el Hodna'' was declared a Ramsar site on 2 February 2001. See also *Geography of Algeria *Hodna The Hodna (french: Le Hodna) is a natural region of Algeria located between the Tell and Saharan Atlas ranges at the eastern end of the ''Hautes Plaines''. It is a vast depression lying in the northeastern section of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chott El Fejej
Chott el Fejej, also known as Chott el Fedjedj and Chott el Fejaj, is a long, narrow inlet of the endorheic salt lake Chott el Djerid in southern Tunisia. History and geography The bottom of Chott el Fejej lies below sea level and runs in a narrow path from the main body of Chott el Djerid to the Tunisian desert oasis of El Hamma, near the Gulf of Gabès on the Mediterranean Sea. The distance from the point where the Chott el Fejej joins the Chott el Djerid to its end near El Hamma is approximately . Along its length, Chott el Fejej never widens beyond and in many places is considerably more narrow. The easterly end of the Chott el Fejej is separated from Mediterranean by an approximately wide ridge of sand near El Hamma. It was this narrow sandy ridge, separating the Chott el Fejej from the Mediterranean Sea, which brought it to the attention of various geographers, engineers and diplomats. These figures looked to create an inland "Sahara Sea" by channelling the waters of the M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chott Melrhir
Chott Melrhir () also known as Chott Melghir or Chott Melhir is an endorheic chott-kind of salt lake in northeastern Algeria. It is the westernmost part of a series of depressions, which extend from the Gulf of Gabès into the Sahara. They were created between Miocene and Early Pleistocene as a result of compression accompanying the formation of the Atlas Mountains. With the maximum area of about , it is the largest lake in Algeria.В. М. КотлякоМельгир (Chott Melrhir) Словарь современных географических названий (Dictionary of modern geographical names), 2003–2006 It lies almost entirely below sea level and contains the lowest point in Algeria, . Its size varies over the year and is usually larger than from east to west.Chott Melrhir Encyclopædia Britannica on-line [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chott El Djerid
Chott el Djerid ( ar, شط الجريد ') also spelled ''Sciott Gerid'' and ''Shott el Jerid'', is a chott, a large endorheic salt lake in southern Tunisia. The name can be translated from the Arabic into English as "Lagoon of the Land of Palms". Geography The bottom of Chott el Djerid is located between 10 and 25 meters (about 30 to 80 feet) below sea level. The lake's width varies widely; at its narrowest point, it is only across, compared to its overall length of . At times, parts of it appear in various shades of white, green and purple. The narrow eastward inlet of the chott is also known as Chott el Fejej. It is the largest salt pan of the Sahara Desert, with a surface area of over 7,000 km2 (some sources state 5,000 km2). The site has a typical hot desert climate. Due to the harsh climate with mean annual rainfall of below 100 mm and daytime temperatures sometimes reaching 50 °C (122 °F) or more during summer with dense solar radiation, water ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
