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A massif is simply a principal mountain mass, for example, a compact portion of a mountain range, containing one or more summits. In mountaineering literature, a massif is frequently used to denote the main mass of an individual mountain.
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Deseado River is a river in the Argentine province of Santa Cruz. The name Deseado comes from the English Desire, the name of one of the two ships commanded by John Davis during the Thomas Cavendish expedition of 1592.
The Pinturas River is a river in Patagonia, Argentina, running through the Pinturas River Canyon, near the Cueva de las Manos archeological site. The river's main tributary is the Ecker River. The Pinturas River itself is a tributary of the Deseado River.
The Patagonian Desert, also known as the Patagonian Steppe, is the largest desert in Argentina and is the 8th largest desert in the world by area, occupying 673,000 square kilometers (260,000 mi2). It is located primarily in Argentina and is bounded by the Andes, to its west, and the Atlantic Ocean to its east, in the region of Patagonia, southern Argentina. To the north the desert grades into the Cuyo Region and the Monte. The central parts of the steppe are dominated by shrubby and herbaceous plant species albeit to the west, where precipitation is higher, bushes are replaced by grasses. Topographically the deserts consist of alternating tablelands and massifs dissected by river valleys and canyons. The more western parts of the steppe host lakes of glacial origin and grades into barren mountains or cold temperate forests along valleys.
Pan American Silver Corporation is a mining company based in Canada with operations in Latin America. The company has mines and other projects in Mexico, Peru, Bolivia, and Argentina.
Iglesia is a department of the province of San Juan, Argentina. It is located in the northwest mountainous corner of this province with substantial vegetation. Iglesia is one of the most visited departments in the province, particularly around Rodeo.
Coeur Mining, Inc. is a precious metals mining company listed on the New York Stock exchange. It operates five mines located in North America. Coeur employs 2,200 people and in 2012 it was the world's 9th largest silver producer. In 2013 the company changed its name to Coeur Mining, Inc. from Coeur d'Alene Mines and moved its head office to Chicago, Illinois from Coeur d'Alene, Idaho.
Notobatrachus is an extinct genus of frog from the Lower Jurassic (Toarcian) Cañadon Asfalto Formation, Cañadón Asfalto Basin and Middle Jurassic La Matilde Formation, Deseado Massif of Patagonia, Argentina. N. degiustoi is the most completely known Jurassic frog and has been recorded in many outcrops of the La Matilde Formation of the Deseado Massif in southern Patagonia.
Espejo may refer to:
Deseado Department is a department in Santa Cruz Province, Argentina. It has a population of 72,953 (2001) and an area of 63,784 km². The seat of the department is in Puerto Deseado.
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The Chon Aike Formation is an extensive geological formation, present in the Deseado Massif in north-central Santa Cruz Province, Patagonia, Argentina. It covers an area of approximately 100,000 square kilometres (39,000 sq mi) and consists of rhyolitic volcanic rocks, particularly ignimbrites and lavas, with smaller amounts of agglomerates and tuffs. Within dacitic rocks, plant fossils have been found.
Patagonia comprises the southernmost region of South America, portions of which lie on either side of the Argentina-Chile border. It has traditionally been described as the region south of the Rio Colorado, although the physiographic border has more recently been moved southward to the Huincul fault. The region's geologic border to the north is composed of the Rio de la Plata craton and several accreted terranes comprising the La Pampa province. The underlying basement rocks of the Patagonian region can be subdivided into two large massifs: the North Patagonian Massif and the Deseado Massif. These massifs are surrounded by sedimentary basins formed in the Mesozoic that underwent subsequent deformation during the Andean orogeny. Patagonia is known for its vast earthquakes and the damage they cause.
The Deseado Massif is a massif in southern Patagonia located in the Argentine province of Santa Cruz. On surface the massif is made up of Middle to Late Jurassic-aged felsic volcanic rocks. Analysis of mantle xenoliths reveals that the lithospheric mantle of the Deseado Massif is about 2100 to 1000 million years old. As such the Deseado Massif is one of the oldest regions of Patagonia as it existed in some form during the Paleo and Mesoproterozoic. In the Neoproterozoic the Deseado Massif together with the Falkland Islands formed part of the supercontinent Rodinia. Since then Deseado Massif has been next to the Falkland Islands.
References
- ↑ "Manantial Espejo Mine". panamericansilver.com. 2012. Retrieved 2013-07-21.
- ↑ Echavarría, Leandro E.; Shalamuk, Isidoro B.; Etcheverry, Ricardo O. (2005). "Geologic and tectonic setting of Deseado Massif epithermal deposits, Argentina, based on El Dorado-Monserrat". Journal of South American Earth Sciences . 19 (4): 415–432. doi:10.1016/j.jsames.2005.06.005.
48°46′00″S69°30′00″W / 48.7667°S 69.5000°W
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