The Sistema Coriano also known as Lara-Falcón Formation, Coro region or Coriano system is one of the eight
natural regions of Venezuela. Is the hilly and semi-mountainous area in northwest
Venezuela
Venezuela, officially the Bolivarian Republic of Venezuela, is a country on the northern coast of South America, consisting of a continental landmass and many Federal Dependencies of Venezuela, islands and islets in the Caribbean Sea. It com ...
, north of the
Mérida Andes and east of the
Maracaibo Basin, extending north to the
Caribbean
The Caribbean ( , ; ; ; ) is a region in the middle of the Americas centered around the Caribbean Sea in the Atlantic Ocean, North Atlantic Ocean, mostly overlapping with the West Indies. Bordered by North America to the north, Central America ...
coast. It consists mostly of east–west running ridges, with the exception of the
Sierra de Siruma or Empalado which run north–south.
Ecology
The region contains the
Paraguana xeric scrub ecoregion.
The coastal plain contains Venezuela's only desert, the
Médanos de Coro (the Coro Dunes), on the
Paraguaná Peninsula.
The Coro region is one of the ten geographical regions into which
Venezuela
Venezuela, officially the Bolivarian Republic of Venezuela, is a country on the northern coast of South America, consisting of a continental landmass and many Federal Dependencies of Venezuela, islands and islets in the Caribbean Sea. It com ...
can be divided. Because the two major depression valleys are the Falcón and the Lara, the mountains are sometimes called the Falcón-Lara ranges. The geographic region covers all of
Falcón State, half of
Lara State and
Yaracuy State, and small percentages of
Zulia State and
Carabobo State. It's the 3rd largest natural region in the country, covering 5.75% of Venezuela.
Hydrology
Coro region is very dry, with the evaporation rate frequently exceeding the precipitation rate at the lower elevations. There are three major river systems in the region. The Pedregal and Paraíso rivers which feed into the
Mitare River which empties into the
Coro Gulf. The Morere, Barigua and Bucares rivers which together form the
Tocuyo River, arguably the most important river in the area draining 223.44 square kilometres, and emptying into the Caribbean near the Triste Gulf. The Tocuyo river crosses the ecoregion called the Lara Falcón Dry Forest. In the valleys of the Lara-Falcón depression, the Turbio river is the most important due to its volume of water; its mouth is near the
Orinoco
The Orinoco () is one of the longest rivers in South America at . Its drainage basin, sometimes known as the Orinoquia, covers approximately 1 million km2, with 65% of it in Venezuela and 35% in Colombia. It is the List of rivers by discharge, f ...
River basin.
Geology
With the exception of the Siquisique highlands (which are an igneous remnant of Jurassic age), the rocks are Cenozoic, mostly 30 to 70 m.y.o., (Paleocene, Eocene, Oligocene), overlaid by some Pleistocene and Holocene alluvial deposits. This corresponds well with the
Andean orogeny.
Economy
There are some oil deposits, but mainly the population relies on subsistence farming with some cattle grazing. The dry climate is not conducive to commercial agriculture, but there are some
aloe vera
''Aloe vera'' () is a succulent plant species of the genus ''Aloe''. It is widely distributed, and is considered an invasive species in many world regions.
An evergreen perennial plant, perennial, it originates from the Arabian Peninsula, but ...
plantations. There is some mining in the higher mountains and fishing on the coast.
Towns
*
Barquisimeto
*
Cabudare
*
Carora
*
Coro
*
Dabajuro
*
Punto Fijo
Punto Fijo is the capital city of the municipality of Carirubana in northern Falcón State, Venezuela. It is located on the southwestern coast of the Paraguaná Peninsula. Its metropolitan area includes the parishes of Norte, Carirubana, Punta Ca ...
*
Riecito
*
El Tocuyo
References
Further reading
Trinidad & Gulf of Paria: long-lived foreland basin (Campanian-Quaternary) with Neogene salt-dissolution 'piggyback' basinsby Roger Higgs.
* Bartok, P. E. (1985) “The Siquisique ophiolites, Northern Lara State, Venezuela: A discussion on their Middle Jurassic ammonites and tectonic implications” Geological Society of America Bulletin: Vol. 96, No. 8, pp. 1050–1055.
in Spanish.
* MARAVEN (1988) Serie estudios regionales. Sistemas Ambientales Venezolanos. Región Centro occidental. Estados Lara, Falcón, Portuguesa y Yaracuy. Ediciones MARAVEN. Caracas.
{{Natural Regions of Venezuela
Natural regions of Venezuela
Geographical regions of Venezuela
Geography of Lara (state)
Geography of Falcón
Geography of Yaracuy