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River Arnon
Wadi Mujib ( ar, وادي الموجب, ''Wadi el-Mujib''), also known as Arnon Stream (Hebrew: נַחַל ארנון), is a river in Jordan. The river empties into the Dead Sea circa below sea level. Today, Wadi Mujib is fed by seven tributaries. The western part of the river is the site of the Mujib Biosphere Reserve, popular for hikes & canyoning amid dramatic rock formations. Geography During the last ice age the water level of the Dead Sea reached below sea level, about higher than it is today. It flooded the lower areas of the canyons along its banks, which became bays and begun to accumulate sediments. As the climatic conditions changed, about 20,000 years ago, the water level of the lake dropped, leaving the re-emergent canyons blocked with lake marl. Most canyons managed to cut through their plugged outlets and to resume their lower courses. However, Wadi Mujib, abandoned its former outlet by breaking through a cleft in the sandstone. This narrow cleft became the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slot Canyon
A slot canyon is a long, narrow channel or drainageway with sheer rock walls that are typically eroded into either sandstone or other sedimentary rock. A slot canyon has depth-to-width ratios that typically exceed 10:1 over most of its length and can approach 100:1. The term is especially used in the semiarid southwestern United States and particularly the Colorado Plateau. Slot canyons are subject to flash flooding and commonly contain unique ecological communities that are distinct from the adjacent, drier uplands. Some slot canyons can measure less than across at the top but drop more than to the floor of the canyon. Many slot canyons are formed in sandstone and limestone rock, although slot canyons in other rock types such as granite and basalt are possible. Even in sandstone and limestone, only a very small number of streams will form slot canyons due to a combination of the particular characteristics of the rock and regional rainfall. Around the world Slot canyons are foun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
River
A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of water. Small rivers can be referred to using names such as Stream#Creek, creek, Stream#Brook, brook, rivulet, and rill. There are no official definitions for the generic term river as applied to Geographical feature, geographic features, although in some countries or communities a stream is defined by its size. Many names for small rivers are specific to geographic location; examples are "run" in some parts of the United States, "Burn (landform), burn" in Scotland and northeast England, and "beck" in northern England. Sometimes a river is defined as being larger than a creek, but not always: the language is vague. Rivers are part of the water cycle. Water generally collects in a river from Precipitation (meteorology), precipitation through a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ma'in Hot Springs
The Ma'in Hot Springs ( ar, حمامات ماعين) also known as Hammamat Ma'in are a series of hot mineral springs and waterfalls located between Madaba and the Dead Sea in Madaba Governorate, Jordan. Location The Ma'in Hot Springs are located 74 km (64 miles) south of Amman in Madaba Governorate and is 27 km away from Madaba. They are located 264 meters (866 feet) below sea level. The region contains a total of 63 springs at different temperatures but similar chemical composition, containing chemical elements and compounds such as sodium, calcium, chloride, radon, hydrogen sulfide, and carbon dioxide. Temperatures in some springs reach 63 degrees Celsius. Medical tourism The Ma'in hot springs are considered a medical tourism Medical tourism refers to people traveling abroad to obtain medical treatment. In the past, this usually referred to those who traveled from less-developed countries to major medical centers in highly developed countries for treatment unav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nerium
''Nerium oleander'' ( ), most commonly known as oleander or nerium, is a shrub or small tree cultivated worldwide in temperate and subtropical areas as an ornamental and landscaping plant. It is the only species currently classified in the genus ''Nerium'', belonging to subfamily Apocynoideae of the dogbane family Apocynaceae. It is so widely cultivated that no precise region of origin has been identified, though it is usually associated with the Mediterranean Basin. Nerium grows to tall. It is most commonly grown in its natural shrub form, but can be trained into a small tree with a single trunk. It is tolerant to both drought and inundation, but not to prolonged frost. White, pink or red five-lobed flowers grow in clusters year-round, peaking during the summer. The fruit is a long narrow pair of follicles, which splits open at maturity to release numerous downy seeds. Nerium contains several toxic compounds, and it has historically been considered a poisonous plant. Howeve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phoenix (plant)
''Phoenix'' is a genus of 14 species of Arecaceae, palms, native plant, native to an area starting from the Canary Islands in the west, across northern and central Africa, to the extreme southeast of Europe (Crete), and continuing throughout southern Asia from Turkey east to southern China and Malaysia. The diverse habitats they occupy include swamps, deserts, and mangrove sea coasts. Most ''Phoenix'' species originate in Semi-arid climate, semi-arid regions, but usually occur near high groundwater levels, rivers, or Spring (hydrosphere), springs. The genus is unusual among members of subfamily Coryphoideae in having pinnate, rather than palmate leaves; tribe Caryoteae also have pinnate or bipinnate leaves.Riffle, Robert L. & Craft, Paul (2003) ''An Encyclopedia of Cultivated Palms''. Portland: Timber Press. / The palms were more numerous and widespread in the past than they are at present. Some ''Phoenix'' palms have become naturalised in other parts of the world; in particular ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tamarix
The genus ''Tamarix'' (tamarisk, salt cedar, taray) is composed of about 50–60 species of flowering plants in the family Tamaricaceae, native to drier areas of Eurasia and Africa. The generic name originated in Latin and may refer to the Tamaris River in Hispania Tarraconensis (Spain). Description They are evergreen or deciduous shrubs or trees growing to in height and forming dense thickets. The largest, ''Tamarix aphylla'', is an evergreen tree that can grow to tall. They usually grow on saline soils, tolerating up to 15,000 ppm soluble salt, and can also tolerate alkaline conditions. Tamarisks are characterized by slender branches and grey-green foliage. The bark of young branches is smooth and reddish brown. As the plants age, the bark becomes gray-brown, ridged and furrowed. The leaves are scale-like, almost like that of junipers, 1–2 mm (1/20" to 1/10") long, and overlap each other along the stem. They are often encrusted with salt secretions. The pink to w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acacia
''Acacia'', commonly known as the wattles or acacias, is a large genus of shrubs and trees in the subfamily Mimosoideae of the pea family Fabaceae. Initially, it comprised a group of plant species native to Africa and Australasia. The genus name is New Latin, borrowed from the Greek (), a term used by Dioscorides for a preparation extracted from the leaves and fruit pods of ''Vachellia nilotica'', the original type of the genus. In his ''Pinax'' (1623), Gaspard Bauhin mentioned the Greek from Dioscorides as the origin of the Latin name. In the early 2000s it had become evident that the genus as it stood was not monophyletic and that several divergent lineages needed to be placed in separate genera. It turned out that one lineage comprising over 900 species mainly native to Australia, New Guinea, and Indonesia was not closely related to the much smaller group of African lineage that contained ''A. nilotica''—the type species. This meant that the Australasian lineage (by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hot Spring
A hot spring, hydrothermal spring, or geothermal spring is a spring produced by the emergence of geothermally heated groundwater onto the surface of the Earth. The groundwater is heated either by shallow bodies of magma (molten rock) or by circulation through faults to hot rock deep in the Earth's crust. In either case, the ultimate source of the heat is radioactive decay of naturally occurring radioactive elements in the Earth's mantle, the layer beneath the crust. Hot spring water often contains large amounts of dissolved minerals. The chemistry of hot springs ranges from acid sulfate springs with a pH as low as 0.8, to alkaline chloride springs saturated with silica, to bicarbonate springs saturated with carbon dioxide and carbonate minerals. Some springs also contain abundant dissolved iron. The minerals brought to the surface in hot springs often feed communities of extremophiles, microorganisms adapted to extreme conditions, and it is possible that life on Earth had its ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steppe
In physical geography, a steppe () is an ecoregion characterized by grassland plains without trees apart from those near rivers and lakes. Steppe biomes may include: * the montane grasslands and shrublands biome * the temperate grasslands, savannas and shrublands biome A steppe may be semi-arid or covered with grass or with shrubs or with both, depending on the season and latitude. The term " steppe climate" denotes the climate encountered in regions too dry to support a forest but not dry enough to be a desert. Steppe soils are typically of the chernozem type. Steppes are usually characterized by a semi-arid or continental climate. Extremes can be recorded in the summer of up to and in winter, . Besides this major seasonal difference, fluctuations between day and night are also very great. In both the highlands of Mongolia and northern Nevada, can be reached during the day with sub-freezing readings at night. Mid-latitude steppes feature hot summers and cold wint ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gorge
A canyon (from ; archaic British English spelling: ''cañon''), or gorge, is a deep cleft between escarpments or cliffs resulting from weathering and the erosion, erosive activity of a river over geologic time scales. Rivers have a natural tendency to cut through underlying surfaces, eventually wearing away rock layers as sediments are removed downstream. A river bed will gradually reach a baseline elevation, which is the same elevation as the body of water into which the river drains. The processes of weathering and erosion will form canyons when the river's River source, headwaters and estuary are at significantly different elevations, particularly through regions where softer rock layers are intermingled with harder layers more resistant to weathering. A canyon may also refer to a rift between two mountain peaks, such as those in ranges including the Rocky Mountains, the Alps, the Himalayas or the Andes. Usually, a river or stream carves out such splits between mountains. Examp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Madaba
Madaba ( ar, مادبا; Biblical Hebrew: ''Mēḏəḇāʾ''; grc, Μήδαβα) is the capital city of Madaba Governorate in central Jordan, with a population of about 60,000. It is best known for its Byzantine and Umayyad mosaics, especially a large Byzantine-era mosaic map of the Holy Land. Madaba is located south-west of the capital Amman. History Madaba dates from the Middle Bronze Age. The town of Madaba was once a Moabite border city, mentioned in the Bible in Numbers 21:30 and Joshua 13:9. Control over the city changed back and forth between Israel and Moab, as mentioned in the Mesha Stele. During its rule by the Roman and Byzantine empires from the 2nd to the 7th centuries, the city formed part of the Provincia Arabia set up by the Roman Emperor Trajan to replace the Nabataean kingdom of Petra. The first evidence for a Christian community in the city, with its own bishop, is found in the Acts of the Council of Chalcedon in 451, where Constantine, Metropolit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kerak
Al-Karak ( ar, الكرك), is a city in Jordan known for its medieval castle, the Kerak Castle. The castle is one of the three largest castles in the region, the other two being in Syria. Al-Karak is the capital city of the Karak Governorate. Al-Karak lies to the south of Amman on the ancient King's Highway. It is situated on a hilltop about above sea level and is surrounded on three sides by a valley. Al-Karak has a view of the Dead Sea. A city of about 32,216 people (2005) has been built up around the castle and it has buildings from the 19th-century Ottoman period. The town is built on a triangular plateau, with the castle at its narrow southern tip. History Iron Age to Assyrian period Al-Karak has been inhabited since at least the Iron Age, and was an important city for the Moabites. In the Bible it is called ''Qer Harreseth'' or Kir of Moab, and is identified as having been subject to the Neo-Assyrian Empire; in the Books of Kings () and Book of Amos (), it is mentione ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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