Origin of waters from small springs located at the northern coast of Chile, in the vicinity of Antofagasta
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| Format: | Artículo científico |
| Sprache: | en |
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Servicio Nacional de Geología y Minería
2014
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| _version_ | 1876475277788315648 |
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| author | Christian Herrera |
| author_facet | Christian Herrera |
| contents | Origin of waters from small springs located at the northern coast of Chile, in the vicinity of Antofagasta Christian Herrera Emilio Custodio Ciencias de la Tierra Spring Recharge Antofagasta Groundwater Radiocarbon The origin of waters from small springs located at the hyper-arid northern coast of Chile, in the vicinity of Antofagasta, is discussed after hydrogeochemical and isotopic studies and supported by groundwater flow hydrodynamic considerations. Spring water is brackish to saline, with electrical conductivity ranging from 2 to 25 mS/cm. Chemical and water isotope data (18O and 2H) show that the rainfall events that produced part of the recharge could correspond to wetter conditions than at present. Their origin could be related to the emplacement of warm sea currents facing the coast of northern Chile, possibly associated to incursions of El Niño Southern Oscillation (ENSO). Radiocarbon dating and preliminary groundwater hydraulic calculations indicate that these spring waters could be remnants of a more significant recharge in the Cordillera de la Costa than that produced today during the less arid period about 5,000 to 3,000 years ago. The exception is Las Vertientes spring which is the only one that receives water transferred from the Central Depression. The springs are the visible discharge of a regional groundwater body in the very low permeability Cordillera de la Costa, whose hydraulic conductivity decreases downward and flow is dominantly though fissures and storage in the low porosity rock matrix. 2014 artículo científico 0718-7092 https://www.redalyc.org/articulo.oa?id=173931252003 en http://www.redalyc.org/revista.oa?id=1739 Andean Geology application/pdf Servicio Nacional de Geología y Minería Andean Geology (Chile) Num.2 Vol.41 |
| format | Artículo científico |
| id | redalyc_173931252003 |
| institution | Redalyc |
| language | en |
| publishDate | 2014 |
| publisher | Servicio Nacional de Geología y Minería |
| spellingShingle | Origin of waters from small springs located at the northern coast of Chile, in the vicinity of Antofagasta Christian Herrera Ciencias de la Tierra Spring Recharge Antofagasta Groundwater Radiocarbon Origin of waters from small springs located at the northern coast of Chile, in the vicinity of Antofagasta Christian Herrera Emilio Custodio Ciencias de la Tierra Spring Recharge Antofagasta Groundwater Radiocarbon The origin of waters from small springs located at the hyper-arid northern coast of Chile, in the vicinity of Antofagasta, is discussed after hydrogeochemical and isotopic studies and supported by groundwater flow hydrodynamic considerations. Spring water is brackish to saline, with electrical conductivity ranging from 2 to 25 mS/cm. Chemical and water isotope data (18O and 2H) show that the rainfall events that produced part of the recharge could correspond to wetter conditions than at present. Their origin could be related to the emplacement of warm sea currents facing the coast of northern Chile, possibly associated to incursions of El Niño Southern Oscillation (ENSO). Radiocarbon dating and preliminary groundwater hydraulic calculations indicate that these spring waters could be remnants of a more significant recharge in the Cordillera de la Costa than that produced today during the less arid period about 5,000 to 3,000 years ago. The exception is Las Vertientes spring which is the only one that receives water transferred from the Central Depression. The springs are the visible discharge of a regional groundwater body in the very low permeability Cordillera de la Costa, whose hydraulic conductivity decreases downward and flow is dominantly though fissures and storage in the low porosity rock matrix. 2014 artículo científico 0718-7092 https://www.redalyc.org/articulo.oa?id=173931252003 en http://www.redalyc.org/revista.oa?id=1739 Andean Geology application/pdf Servicio Nacional de Geología y Minería Andean Geology (Chile) Num.2 Vol.41 |
| title | Origin of waters from small springs located at the northern coast of Chile, in the vicinity of Antofagasta |
| topic | Ciencias de la Tierra Spring Recharge Antofagasta Groundwater Radiocarbon |
| url | https://www.redalyc.org/articulo.oa?id=173931252003 |