Soil use in pre-Hispanic and historical crop fields in the Guatacondo Ravine, northern Chile (2400 years BP): A geoarchaeological and paleobotanic approach

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dc.contributor.authorSegura, Camila
dc.contributor.authorVidal, Ale
dc.contributor.authorMaldonado, Antonio
dc.contributor.authorUribe, Mauricio
dc.date.accessioned2025-01-20T22:02:07Z
dc.date.available2025-01-20T22:02:07Z
dc.date.issued2022
dc.description.abstractIn one of the most arid places on Earth, the Atacama Desert in northern Chile (18-21 degrees S), pre-Hispanic cultures developed different types of tillage and irrigation systems in the Guatacondo Ravine. Their agrarian production, based on a summer precipitation regime, enabled the formative villages of Ramaditas (2300-2600 years BP) and Guatacondo (2400-2800 years BP) to emerge, along with seasonal agriculture. Despite the insight gained into their agricultural technology, we know very little about how this type of soil management affected the soils' plant nutrient status. Thus, our main objective was to determine if the different tillage systems affected the soils' properties. We analyzed the soils and the pollen composition of different tillage systems and carried out direct radiocarbon dating (C-14) of sediments. The soils' chemical properties (total nitrogen, phosphorus, and organic carbon contents) indicate greater nutrient retention in the square bed system, associated with a higher silt content and the use of organic fertilizers. Pollen analyses show the presence of crop, weed, and riparian species. In conclusion, the analysis of ancient soils gives us valuable information about the innovations and changes implemented in ancient times in the Guatacondo Ravine.
dc.description.funderUniversidad de Chile
dc.fuente.origenWOS
dc.identifier.doi10.1002/gea.21833
dc.identifier.eissn1520-6548
dc.identifier.issn0883-6353
dc.identifier.urihttps://doi.org/10.1002/gea.21833
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/93937
dc.identifier.wosidWOS:000607408400001
dc.issue.numero1
dc.language.isoen
dc.pagina.final163
dc.pagina.inicio148
dc.revistaGeoarchaeology-an international journal
dc.rightsacceso restringido
dc.subjectFormative period
dc.subjectland use
dc.subjectpollen composition
dc.subjectpre-Hispanic crop fields
dc.subjectsoil properties
dc.subjecttillage system
dc.titleSoil use in pre-Hispanic and historical crop fields in the Guatacondo Ravine, northern Chile (2400 years BP): A geoarchaeological and paleobotanic approach
dc.typeartículo
dc.volumen37
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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