Under the skin of Nazca
Article Abstract:
An innovative method for radiocarbon dating has allowed a more exact determination of when Peru's Nazca lines were created: between 190 BC and AD 600. The precise age of these large geoglyphs, or ground-drawings, has long been disputed by archeologists. Now geomorphologist Ronald Dorn and archaeologist Persis Clarkson have obtained a more precise date by measuring the carbon-14 content of the rock varnish on the stones moved out of place when the lines were drawn. Dorn and Clark's date is valuable because it accords well with dates obtained through traditional methods.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1992
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Ancient food for thought
Article Abstract:
Archaeologists' discoveries of ancient methods of land management and food production have great implications for current efforts to achieve sustainable use of the American tropics. For example, evidence suggests that seasonally flooded savannas in the Bolivian Amazon were used for fish weirs.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2000
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An artificial landscape-scale fishery in the Bolivian Amazon
Article Abstract:
Research into the agricultural use of artificial earthworks found in the seasonally flooded savanna of Baures, Bolivia, is presented. Zigzag structures of earthwork seem to have been used as fish weirs, allowing big, dense populations to be sustained in the savanna.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2000
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