The river Jalón ( Latin : Salo ) is located in the northeast of Spain , and is one of the principal tributaries of the Ebro . It has a length of 224 kilometres (139 mi) and drains a basin of 9,338 square kilometres (3,605 sq mi). The flow rate in Calatayud is 20.8 cubic metres per second (730 cu ft/s), but is highly irregular due to the great range of Mediterranean rainfall patterns.
8-742: The course of the river forms the main communication route between the Castilian Plateau and the Ebro. Until the late twentieth century, roads and railways between Madrid and Zaragoza followed this path. The Jalón rises in one of the springs at the foot of the Sierra Ministra , a hill in Esteras de Medinaceli , Medinaceli ( Soria ), and then runs through Arcos de Jalón , to Monreal de Ariza , province of Zaragoza , Aragón . The tributary river Nágima joins at Monreal de Ariza and
16-498: Is one of the basic geographical units of the Iberian Peninsula . It consists of a plateau covering a large part of the latter's interior. Developed during the 19th century, the concept of meseta central was handled by Heinrich Moritz Willkomm in lower case , and eventually Salvador Calderón y Arana [ es ] was reportedly the first in using it in upper case , giving it a toponymic nature. The concept
24-674: The Sierra de la Virgen . Once out of the mountains the river enters the Ebro valley and is joined by the rivers Aranda , Grío and Alpartir before joining the Ebro at Torres de Berrellén , a suburb of the city of Zaragoza . Much of the course of the Jalón has been declared a Special Zone for Bird Protection. Birdlife includes falcons , eagles , and vultures . Other species include owls , wrens , and herons . Poplar , willow and ash . Carp , trout and eels were economically important in
32-757: The Henar at Cetina before the river enters a limestone gorge at Alhama de Aragón . The Jalón then meanders through the Paleozoic zones of the Cordillera Ibérica near Bubierca , being joined by the Piedra and the Manubles at Ateca . At Calatayud , the river expands into a broad valley and is joined by the Jiloca , Perejiles and Ribota . The next section meanders through the Sierra de Algairén and
40-1000: The South. Respectively, the former is drained by the Douro while the latter is drained by the Tagus and the Guadiana . The meseta is flanked by relief units such as the Montes de León , the Galician Massif , the Cantabrian Range , the Basque Mountains , the Sistema Ibérico and Sierra Morena . This European geography article is a stub . You can help Misplaced Pages by expanding it . Jos%C3%A9 Macpherson y Hemas José Macpherson y Hemas (1839–1902)
48-821: The past and are returning as pollution is being combated. The Plan Hidrológico del río Jalón , a river management plan, was adopted by the Spanish Ministry of the Environment and the governments of Aragon, Castile and León and Castile-La Mancha in 2007. According to E. Bascuas , "Jalón" is a form belonging to the old European hydronymy , and derived from the Indoeuropean root *sal- 'flowing water, stream'. Castilian Plateau The Meseta Central ( lit. ' central tableland ' , sometimes referred to in English as Inner Plateau )
56-600: Was a Spanish amateur geologist, noted as pioneer in the introduction of modern techniques for the studies of rocks in Spain. Born in 1839 in Cádiz in a family of traders, son to a Scottish father. He was the younger brother of Guillermo Macpherson [ es ] , a diplomat, archaeologist and translator. Macpherson met Francisco Giner de los Ríos (the founder of the Institución Libre de Enseñanza , ILE) for
64-733: Was also brought forward by José Macpherson y Hemas , while the writers of the Spanish Generation of '98 greatly contributed to its popularisation among the public sphere. The Sistema Central mountain range cuts across the Meseta Central, leaving the Submeseta Norte sub-unit (with heights mostly ranging from 700 to 800 m) to the North and the Submeseta Sur (with heights mostly ranging from 600 to 700 m) to
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