CARTOGRAFÍA GEOLÓGICA Y CARACTERIZACIÓN ESTRUCTURAL DE LA SUBCUENCA DE LA QUEBRADA RÍO SUCIO, MUNICIPIO DE TONA, SANTANDER, ORIENTADOS A DEFINIR UN MODELO HIDROGEOLÓGICO CONCEPTUAL
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Universidad Industrial de Santander
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En el desarrollo de este trabajo se incorporaron parámetros geológicos definidos en campo los cuales conducen a un mayor entendimiento de los sistemas de flujo de agua en la Cuenca Experimental de Río Sucio (CERS); en el área de estudio se presentan rocas metamórficas, ígneas y sedimentarias, distribuidas en bloques estructurales y cubiertas parcialmente por depósitos fluvio-glaciares, aluviales y de vertiente, los cuales podrían conformar zonas de almacenamiento
de agua, interconectadas entre si por fallas presentes. La complejidad estructural está asociada a un sistema regional y en la cuenca se identifican dos direcciones preferenciales de fracturamiento, una dirección principal en sentido NW-SE controlando los afluentes de la quebrada Río Sucio y otra NE-SW relacionada con fallas locales, estos dos patrones se comportan como vías preferenciales de transporte de agua entre zonas de depósitos cuaternarios del altiplano de Berlín y depósitos de la parte media de la CERS. Se realizaron sondeos eléctricos verticales y tomografías como herramientas que permiten complementar los perfiles geológicos y realizar una primera aproximación a los espesores de los depósitos, porosidades y comportamiento de las estructuras. A partir de la cartografía geológica y la caracterización estructural realizada en esta cuenca de montaña con características geológicas complejas se presentan las primeras hipótesis sobre direcciones de flujo de agua, almacenamiento y posible orígenes de recarga a acuíferos en la CERS, posteriormente con la adquisición de mas datos o evidencias será posible realizar el planteamiento de un modelo conceptual hidrogeológico.
Palabras claves: Modelo Hidrogeológico Conceptual, Complejidad Estructural, Depósitos, Hidrogeología, Recarga, Macizo de Santander.
In the development of this work geological parameters defined in field were involved and they drive us to understanding of flow systems existing in the Cuenca Experimental de Río Sucio (CERS); in the area of study metamorphic, igneous and sedimentary rocks are present and are limited by structural blocks covered by quaternary glaciers, alluvial and slope deposits; which constitute?? zones of water storage interconnected by faults. The structural complexity is defined by two preferential trends of faulting, a main pattern NW-SE is controlling the tributaries of the Rio Sucio and others NESW pattern related with local faults, these preferential trends behave as preferential routes of water transport among zones of Berlin Altiplano and quaternary deposits. Vertical Electric Saunding and tomography were realized as important tools in the first quantitative approximation to the thicknesses of the deposits and hydraulic characteristics. These aspects may corroborate the behavior of subsurface structures and to define the first conceptual hydrogeological model. With the cartography and structural description in this mountain basin, we present the first hypotheses on directions of possible water flow, storages zones and origins of recharge of water in complex geologic conditions like the CERS basin. Key words: Structural Complexity, Deposits, Conceptual Hydrogeological Model, Hydrogeology.
In the development of this work geological parameters defined in field were involved and they drive us to understanding of flow systems existing in the Cuenca Experimental de Río Sucio (CERS); in the area of study metamorphic, igneous and sedimentary rocks are present and are limited by structural blocks covered by quaternary glaciers, alluvial and slope deposits; which constitute?? zones of water storage interconnected by faults. The structural complexity is defined by two preferential trends of faulting, a main pattern NW-SE is controlling the tributaries of the Rio Sucio and others NESW pattern related with local faults, these preferential trends behave as preferential routes of water transport among zones of Berlin Altiplano and quaternary deposits. Vertical Electric Saunding and tomography were realized as important tools in the first quantitative approximation to the thicknesses of the deposits and hydraulic characteristics. These aspects may corroborate the behavior of subsurface structures and to define the first conceptual hydrogeological model. With the cartography and structural description in this mountain basin, we present the first hypotheses on directions of possible water flow, storages zones and origins of recharge of water in complex geologic conditions like the CERS basin. Key words: Structural Complexity, Deposits, Conceptual Hydrogeological Model, Hydrogeology.