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| Ischigualasto / Talampaya Natural Parks |
Short Report
These two adjacent parks, which extends over 275,300 ha in the desert area on the western boundary of the Sierra Pampeanas in central Argentina, contains the most complete continental fossil record known to survive the Period (245-208 million years ago). Six geological formations in the parks contain fossils of a wide range of ancestors of mammals, dinosaurs and plants reveal the evolution of vertebrate animals and the nature of palaeo-environments in the period Survive.
Wide Report
Talampaya National Park and the contiguous selection of Ischigualasto Provincial Park straddle the border between the provinces of San Juan and La Rioja in the north west of Argentina. The Ischigualasto-Talampaya region is a desert region is the western boundary of the Sierras Pampeanas in central Argentina.
The preferred site is almost the entire sedimentary basin analysis known as the Ischigualasto-Villa Union Survive basin. It was formed by layers of continental deposits by the rivers, lakes and marshes during the whole period triassic (245-208 million years ago). The sediments contain fossils of a wide variety of plants and animals, including the ancestors of mammals and dinosaurs. They are the most complete continental fossil record known from the triassic, reveal the evolution of vertebrate animals, as well as the environments in which they lived during this period.
Approximately 56 genera of fossil vertebrates are included in the environment, including fish, amphibians and a large variety of reptiles including the direct ancestors of mammals. Most of the fossils are found in the upper levels of the geological formations and consists almost entirely of archosaurs, including large herbivorous and carnivorous species, primitive crocodiles and primitive mammals about the size of a rat.
The river deposits are equipped with large areas of flood plains which indicate quickly flooding, probably after monsoon type storms. More and swamp deposits contain large amount of fossil plants, some of them that coal seams and others retain mummification actual type, an extremely rare form of conservation known of very little villages. Six geological formations of the washbasin Survive the oldest the Talampaya and Tarjados formations, red sandstone that forms the impressive cliffs of the Talampaya National Park. The other formations are composed of more beds, marshes, rivers, and canals floodplain deposits. These formations contain the abundant vertebrate and flora fossils.
Today Ischigualasto-Talampaya desert scarce vegetation characterized by Xeric sand calcareous grasslands shrubs and cacti. The fauna is typical of the arid areas of western Argentina, with under other various types of considered as of special value because they are endemic, national or threatened culturally valuable, including Andean condor, chestnut canastero, sandy gallito, puma, guanaco, mara and viscacha.
Previous to the Spanish conquest, the area was inhabited by various groups aboriginal people, usually semi-nomadic hunters and collectors. The cultural value of Ischigualasto-Talampaya is of great importance, although a detailed study of rock art, artifacts and archaeological sites has only recently begun. The site is situated on the southern area of late Inca influence. In Talampaya, many sites are dug up and are easily accessible. In Ischigualasto, six sites of rock art discovered. In addition, cave and rock overhang village sites, as well as mass graves, campsites and tool-areas are found. It is possible to share a lot of the rock art in terms of geometric figures, human figures and combined panorama.
Source:whc/unesco
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