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Gran Chaco

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Gran Chaco

Large lowland plain in central South America, extending from southeast Bolivia, through western Paraguay to northern Argentina; area 650,000 sq km/251,000 sq mi. It consists mainly of swamps, forests (a source of quebracho timber), and grasslands, and it is utilized for cattle-raising. Oil was discovered in the 1920s in Chaco Boreal, north of the Pilcomayo River. The discovery exacerbated boundary disputes between Bolivia and Paraguay, and precipitated the Chaco War (1932-35).

The Gran Chaco is roughly divided into three regions: the Chaco Boreal extends from the Chiquitos Plains in Bolivia to the Pilcomayo River in Paraguay; the Chaco Central lies between the Pilcomayo and Bermejo rivers, mainly in Argentina; the Chaco Austral, also in Argentina, lies between the Bermejo and Salado rivers.


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? Mentioned in ? References in periodicals archive
 
High prevalence of hantavirus infection in Indian communities of the Paraguayan and Argentinean Gran Chaco.
Only one hantavirus antibody-prevalence study had been performed among inhabitants of the Gran Chaco of Paraguay and Argentina (Salta Province), and hantavirus antibodies were found in 20% to 40% of participants (5).
The well, Nupuco-X101, located in the Gran Chaco Province of the southern Bolivian department of Tarija, was drilled by the joint venture company, which is owned by Diamond Shamrock, Inc.
 
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