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Pampa de Achala


Located in the center of the southern tip of South America, is the Republic of Argentina. Within its geography, there are extensive grassland, numerous forest s, large desert and major mountain ranges. Among these, the Sierras pampeanas, which are located in central-north-west, covering a vast region comprising the provinces of San Luis, San Juan, Cordoba, La Rioja, Catamarca, Santiago del Estero and Tucuman. Within these ranges, there are significant mountain ranges, including Sierras de Cordoba , are located within the boundaries of the homonymous province. Orogenic in this group, we can distinguish numerous mountain ranges.
Pampa de Achala is the name given to a vast region of the 'Sierras de Cordoba', a range of mountains located in the west of Cordoba Province in Argentina. It is a rugged area, which lies above 1,500 meters and is of special ecological, biological, orographic and hydrographic significance.

Origin of the Name

The name for the area comes from the Quechua language, and apparently refers to the original inhabitants of the region, the comechingones.

There is no concrete data concerning the origin of the name, merely hypotheses. According to the dictionary of the Academia Mayor de la Lengua Quechua, achala means 'fancy dress' or 'striking costume'. Many Quechan terms contain the word achala. A similar word is achalay, meaning 'grooming' or 'decorating.' According to the dictionary of Dr. Gonzalez de Holguin , the word achala does not exist in that context, but one finds the similar words achallay and achallay nichini, which mean both 'to cause something' and 'self-admiration.'

The word could have originated from a distortion of the original term, which was later converted into a word more agreeable to the Spanish of the area, and could refer either to the clothing historically worn by inhabitants of the region, allowing them to withstand the severity of the weather, or to the admiration the inhabitants had for this special region.

Physical Geography

General description

Pampa de Achala is located in the province of Cordoba in Argentina. The northern boundary consists of the mountains of Los Gigantes, and the southern boundary of the northern portion of the Sierra de Comechingones, with the Summits of Achala located in the central area of the region. It is a rugged area, whose small plains and low slopes are responsible for its classification as 'plains'. These slopes and plains allowed for the formation of an intricate underground water network that supplies a great number of springs. Within this region, there are numerous deep ravines with vertical walls between 600m and 800m high, many of which are more than 1,000m wide. The most important and popular ravines are the Quebrada del Condorito and the Quebrada de Yatan.

These streams have nurtured microclimates that allow for the development of ecological niches, with many endemic species (species that do not live anywhere else on the planet), worthy of study and observation. In general access to them is difficult due to the rugged terrain, often inaccessible to any vehicle (including those with all-wheel drive) and thus can only be reached on foot, by mule or by horseback.

Cartography

There are many maps published and available on the Internet that detail the region.

General view of Pampa de Achala The region appears to be a large mass of rock from north to south, crossed by a single road: National Road RN 20.

Position, limits, and extension

The region covers southern Cruz del Eje Department, the south west of Punilla Department, San Alberto Department and San Javier Department and the west of Calamuchita Department.

It is difficult to differentiate the water reserve Provincial Pampa de Achala from the Pampa de Achala itself. The water reserve was purposely created to protect the Pampa. Its boundaries are set by geographical features: the northern boundary reaches the provincial route RP 28 (formerly the National Road RN 20), which surrounds the massif of Los Gigantes. The southern boundary is Mount Champaqui, 2,790 meters high. Its eastern and western limits are set by the high altitude of 1,500 meters. In this region are the highest peaks of the province.

Its size is about 65 km from north to south and 24 km from east to west, which represents an area of approximately 150,000 hectares, of which 40,000 are the Quebrada del Condorito National Park.

Paths

To access this region, two provincial roads: Provincial Route No. 28 (gravel), linking the towns of Tanti with Taninga (near the town of Salsacate). After traveling nearly 40 km from Tanti, and climb over 1,700 meters you reach the far north of the region, more precisely at the foot of the massif Los Gigantes. From there you can follow the same route to the town of Taninga. The second option is the provincial route RP 34 (tarmac), located about 30 km south of the former. It crosses the city of Villa Carlos Paz, crossing the towns of San Antonio de Arredondo, Villa Icho Cruz, Mayu Sumaj, Cuesta Blanca, and deposited us in the Pampa de Achala. This road is also known as Camino de las Altas Cumbres or route Jorge Raul Recalde, in tribute to this rally racer. Continuing along the same route, it accesses the Traslasierra Valley. While these are the two most relevant options, there are regional roads and tourist access to reach specific sectors within the region. As mentioned above, except for these two alternatives, the other, in most cases are suitable only for special vehicles, and yet they can not access certain areas.

Geology

The geological evolution of the'' 'Pampa de Achalacannot be isolated from the evolution of Sierras de Cordoba and Sierras de San Luis. The geological history of these, dating back 15 million years, with the formation of a sedimentary basin which was then subjected to enormous strain as a result of horizontal pressure.

Elevated basement blocks are reverse faults of approximately north-south direction, west verging, which are composed by metamorphic rock and Igneous of the Neoproterozoic in the Palaeozoic. Less affected by successive orogenic cycles: the Pampean orogenies, the Proterozoic higher-Cambrian medium (Rapela et al. 1998), Famatinian, the Ordovician less than half and achaliana of Devon medium to Carboniferous lower , which would be related to successive stages of convergence and collision of land with the craton of the River Plate, along the proto-Andean margin of Gondwana (sic)

. The magnetic susceptibility of the Achala Batholith and its difference with other Achalian granites.''' Autores varios, publicado en la Revista de la Asociacion Geologica Argentina. v.63 n.3 Buenos Aires jul./sep. 2008 Here, there was intrusion of large igneous bodies - batholiths - ended granite, producing the rise of the emerging mountains. In the Tertiary old structures were activated and generated new ones. Along with the strain developed a significant volcanism in the western region and, finally, late in the same era and the beginning of the Quaternary, the whole region was a general uprising "to build the current ranges.

The tectonic forces at work in the Andean folding horizontal pressures generated from the west and due to the rigidity of the underlying material caused the existence of faults, almost all north-south and an alignment of the strings accordingly. The result was that seen at present, a mountain range with steep western slopes and eastern slopes with gentle slope, which allowed the formation of natural lakes and streams of high ecological value. These mountain ranges are represented the three types of rocks: Metamorphic, Sedimentary and Igneous or granite.

All these orogenic movements, gave rise to our Pampa de Achala.

Geochemically include calc-alkaline granites with alkaline s, metaaluminosos to peraluminous, are more abundant and Monzogranites granites, but also appear granodiorites, leucogranites and tonalites. Often contain mafic enclaves, dikes lamprofiricos-pegmatite and aplite. By its chemical composition is located within the field of collisional or intraplate granites (Rapela et al. 1990), and have been interpreted as a product of partial melting of the crust due to changes in the thermal regime during regional uplift (Otamendi et al. 2002).

Since the foundation of the Pampas Sierras was hit by a series of extensional events in the Late Paleozoic (Gondwanan cycle) and Late, the latter accompanied by a large magmatism basic effusive, and finally the orogeny Cenozoic Andico cycle, which produced the present morphology dumps blocks east, with activity until the present. The brittle tectonic Andica is represented by reverse faults among which stand out in the hills of Cordoba those high peaks, the Giants-Copina (NNO) and The Cumbrecita (NNE) (sic)

Orography

The most common here are metamorphic rocks formed from plutonic-metamorphic basement of the Precambrian age, composed mostly of coarse-grained metamorphic rocks (gneiss and migmatites), interrupted by large demonstrations granite (batholiths), common in the Pampa de Achala. Found primarily quartz, mica, biotite and muscovite. magnetite, fluorapatite rutile, chlorite, kaolinite and uranium ore. The latter has generated considerable controversy regarding its acquisition, due to the high degree of pollution, which involves extraction.

Weather

The climate of the region is temperate with high thermal aptitude. The maximum temperatures are generally 30C in the summer, and the temperature does not fall below -20C during the winter (approximately the end of April to the beginning of September).

As is typical of the climate of mountain regions, the weather conditions can change within minutes.

Hydrography

The average precipitation for the area is 800 mm. In summer precipitation is in the form of rain, and generally in the winter it is found in the form of snow. Fog is common all year due to the humid winds from the east; the cold winds from the south are also not uncommon. An intricate network of streams, ponds, lakes and springs give this region the characteristic function as a 'sponge' that absorbs and retains the moisture throughout the year, channeling it into the water sources which supplied much of the population of the province. It is a natural basin for precipitation, and for this reason, the provincial government declared the region as the provincial water reserve of Pampa de Achala. The area contains the headwaters of four major rivers of the province: Suquia (or First River), Xanaes (or Second River) and Ctalamochita (or Third River) flowing towards the eastern margin of the Sierras. Towards the western side of the region we find the headwaters of the Rio Mina Clavero river.

Biome

This particular eco-region, as defined by the convergence of the biogeographical provinces of Chaquena del Espinal, Pampeana and Mountain, has been influenced by many types of flora and fauna. It is regarded as an "island" due to its specific biogeographical characteristics and it is thus distinguished from other areas within the environment of Chaco by its altitude and the species that inhabit it.

Flora

General

Several phytogeographical provinces converge here: Chaquena, Andean, Patagonian and Magellanic. The confluence of these very diverse currents confers on the area a synthesis of microclimates which makes it unique, a uniqueness accentuated by the presence of endemic species, the number of which is probably greater than is presently known.

Species

In the ravines and on the mountain slopes are copses or small woods of tabaquillo and mayten, called in the mountain zone "quebracho", the coexistence of which is a unique biogeographical phenomenon. The tabaquillo has relatives which are distributed the length of the Andes from Venezuela to Argentina, while the mayten originates from the woodlands of south-west Argentina (the cool Andean-Patagonian woodland) or [[:es:Bosque andino patagonico|Andean-Patagonic forest (in Spanish)]]. The greatest density of these woods is in the bottoms of the ravines, where they acquire a low forest physiognomy with great quantities of ferns and epiphytes. Both the grasslands and the woodlands of the pampas and of the ravines respectively are composed of plants of very diverse origins. Some, approaching from the eastern slopes of the mountainous area, are native to the Austro-Brazilian region. Other species of specifically Andean origin have in the Pampa de Achala their most southerly distribution. On the other hand, numerous species of the south of Argentina find in this region their most northerly habitat.

Not only the rocky walls of the ravines but also the granite outcrops of the Pampa de Achala, at first glance sites deprived of vegetation and of fauna, represent highly diverse habitats, capable of sustaining in their cracks and fissures a flora and fauna of significant scientific interest.

Below the 1,500 metre line, the tough grasslands of the high altitude are replaced by thickets in which the romerillo (Heterothalamus alienus) predominates. The high altitude woodlands make way for the mountainous Chaqueno woodlands, with trees of molle and coco.

Fauna

General

The characteristics of this area primarily correspond to the Andean-Patagonian region, with the typical species of the plain encountered at an altitude that limits their distribution. The geographical isolation of the area has been favourable for the region, allowing for the survival of unique fauna. Biologists and birdwatchers from around the world travel to Pampa de Achala to observe the endemic species of the region.

Amphibians

Amphibians native to the region include Achala toads and the "Achalan frog" .

Birds

Eleven subspecies and species of birds of the Passeriform order of Andean-Patagonian lineage are exclusive to this area, including:

"Rufous-banded miner" , "common miner" , "bar-winged cinclodes" , "white-winged cinclodes" , "Cordilleran canastero" , "Puna castanero", "White-Tailed Shrike Tyrant" , "Cinereous Ground-Tyrant" , "plain-colored seedeater" , "Plumbeous Sierra-Finch" (also known as Yal plomizo) and "Ash-breasted Sierra-Finch" (also called Yal chico),

"long-tailed meadowlark" Sturnella loyca obscura), which nests in the ground and in large, oddly-shaped rocks.

The most inaccessible cliff walls are used as nesting sites by the

"Black-chested buzzard eagle" (Geranoetus melanoleucus), the peregrine falcon (Falco peregrinus) and the Andean Condor .

The Andean condor is one of the more recognized species in the area; as of 2007, 101 Andean condors remained in the region. The King Vulture (Sarcoramphus papa) has also been spotted in Pampa de Achala.

Mammals

Among the mammals native to the region is the Culpeo or Andean fox (Pseudalopex culpaeus)-in the region, is called red fox-, which is in danger of extinction. They share this region with 30 other species of mammals, including the puma (Felis concolor), classified as vulnerable; the colocolo (Oncifelis colocolo); the ferret (Mustela furax''); and Geoffroy's cat (Oncifelis geoffroyi).

Small rodents and hare are also abundantly present in the area. Guanacos have recently been reintroduced to the region, as they were disappearing slowly towards the early twentieth century.

Insects

The local scorpion, (Urophonius achalensis), is of particular interest. Of the numerous species of arthropod, the fire ant stands out on account of the size of its nests and pathways.

Reptiles

Along the arroyos are well-watered areas and reedbeds where the native coral snake Liophis anomalus feeds on the local tree frog Hyla pulchella ( or "bramble-patch frogs") .

An endemic species is also to be found, the eye-catching green lizard of Achala, Prystidactilus achalensis.

The sole venomous snake is a species of hognose snake, Lystrophis dorbignyi .

Fish

The commonest species of fish in the water courses of the Pampa de Achala are the rainbow trout, arroyo trout (Salvelinus fontinalis), Astyanax fasciatus , and . Indiscriminate fishing has caused the loss of numerous species throughout the region (and indeed the entire province). The rivers and arroyos are perpetually being re-stocked with salmon, with the intention of maintaining the ecology. Regrettably the goal can never be reached, as secret fishing is constant and difficult to control, and has caused the loss of very many species. As at September 2009, all fishing in all locations throughout the province is forbidden during the hours of darkness.

Political Geography

Human Biogeography

Original Inhabitants

The original inhabitants of the region were the Comechingones, the indiginous inhabitants of the plains and mountains beginning approximately 500 years ago, and who are responsible for most of the names given to the major elements of the region of the Cordoba mountains. They arrived in the region by fleeing the persecution of Spanish colonizers.

In the area of pampa de olaen, researchers have found evidence of an earlier culture, ayampiti, which existed in the region approximately 6,000 years earlier.

Population

The population of the region is extremely low. Access to the region is difficult, with many roads being steep, and many areas accessible only by walking or riding a mule or horse. Obtaining water is not easy, as it seeps down to the bedrock very quickly. Electricity is provided exclusively through solar power. Despite the difficulties of living in Pampa de Achela, schools exist in the region that serve as convergence points for inhabitants of the area. Some schools have to offset their academic terms due to inclement weather in the winter , causing classes to be suspended until spring. The region also contains some very basic health centers.

The principal activity of the region is the breeding and raising of goats, cattle, and sheep. These animals are used to sustain the inhabitants of the region through the sale of leather, and raw or woven wool. Some inhabitants also produce pottery to sell to tourists.

Economic Geography

Tourism and Ecology

Some areas (particularly Los Gigantes) have high mountain ranges are used by climbers, both amateur and professional, as well as Scout groups. During the summer, the water ways that have small sandy beaches at their banks attracts some tourists. Another popular attraction is "the path of the high peaks." While the current route is relatively new (the project dates from the late 1950s), the original existed before the twentieth century and is known as a path of suspension bridges. The route was constructed along the path of a public trail, which was used by hikers and horseback riders. Its construction is due to the tireless work of the priest Jose Gabriel del Rosario Brochero, more famously known as the Cura Gaucho. Today, this road is used as one of the stages of the world rally championship, and as a tourist attraction. With the declaration of natural reserves (and national park area of the Quebrada del Condorito), it is expected that the impact of the tourism on the ecology of the region will be measured and controlled to better protect the local ecology.

Mining

Mining in the area is limited, as it has been proven that mining is devastatingly detrimental to the area's ecology. There are a few mines in the area that were established prior to the creation of the reserve, and they operate under strict environmental controls. The most notable of the mines in the area is the uranium mine of the Los Gigantes, property of ADARSA, which extracts and processes material for the nuclear power plants of Embalse and Atucha.

Legislation

The region was declared a Provincial Water Reserve in 1999 due to the area receiving the most precipitation in the province (in the form of both rain and snow), providing most of the water resources for Cordoba and surrounding provinces.

This transforms the area into the most important watershed of central Argentina.

Referenced Sources

GEUNA, Silvana E., ESCOSTEGUY, Leonardo D., MIRO, Roberto et al. La susceptibilidad magnetica del batolito de Achala y sus diferencias con otros granitos achalianos. Revista Asociacion Geologica Argentina, jul./sep. 2008, vol.63, no.3, p. 380-394. ISSN 0004-4822.

Refugio de Animales Autoctonos por decreto 1174/64 dentro de Decreto Ley de Caza 4046/58, art. 25.

Veda Permanente de Caza. Resoluciones Anuales en marco de Decreto Ley de Caza 4046/58.

Ley de Creacion del Parque Nacional Quebrada del Condorito 24.749/96.

Decreto de creacion de la Reserva Hidrica Provincial de Achala N 361 del 31 de marzo de 1999.

Reserva Hidrica provincial de Achala Secretaria de ambiente Gobierno de la provincia de Cordoba.

Parque Nacional Quebrada del Condorito - Gobierno de la Provincia de Cordoba

Bibliography

Dimitri, Milan J., and Parodi, Lorenzo R., 1978: Enciclopedia Argentina de Agricultura y Jardineria T1, Vol 1 y Vol 2. Buenos Aires: Editorial ACME S.A.C.I.

See also

Sierras de Cordoba

Sierras Grandes

Sierras Pampeanas

Quebrada del Condorito

Quebrada del Yatan

References

External links

Fundacion Condor

Pagina con informacion general sobre Cordoba

Fundacion para la proteccion del Ambiente

Reserva Hidrica Provincial de Pampa de Achala

Pampa de Achala, una experiencia personal

Mina Clavero

Cordoba virtual

Barrameda

Areas Protegidas de Cordoba

Quebrada del condorito

Welcome to Argentina (Pagina privada de Parques Nacionales Argentinos)

Gobierno de la Provincia de Cordoba (Parque Nacional Quebrada del Condorito)

Aves de la region pampeana

Aves silvestres

Aves del Chaco y Corrientes

Region Traslasierra

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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article Pampa de Achala


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