<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0120-0283</journal-id>
<journal-title><![CDATA[Boletín de Geología]]></journal-title>
<abbrev-journal-title><![CDATA[Bol. geol.]]></abbrev-journal-title>
<issn>0120-0283</issn>
<publisher>
<publisher-name><![CDATA[Universidad Industrial de Santander]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0120-02832021000300107</article-id>
<article-id pub-id-type="doi">10.18273/revbol.v43n3-2021005</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Análisis cuantitativo de sistemas de fracturas y sus implicaciones hidrogeológicas en la zona sur de la Mesa de Los Santos, Santander - Colombia]]></article-title>
<article-title xml:lang="en"><![CDATA[Quantitative analysis of the fracture systems and groundwater implications in the south zone of the Mesa de Los Santos, Santander - Colombia]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tarazona-Lizcano]]></surname>
<given-names><![CDATA[Yessenia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vargas-López]]></surname>
<given-names><![CDATA[María Camila]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Velandia]]></surname>
<given-names><![CDATA[Francisco]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Industrial de Santander Escuela de Geología ]]></institution>
<addr-line><![CDATA[Bucaramanga ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<volume>43</volume>
<numero>3</numero>
<fpage>107</fpage>
<lpage>123</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-02832021000300107&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-02832021000300107&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-02832021000300107&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El análisis cuantitativo del sistema de fracturas emplea métodos y procesamientos estadísticos para determinar la geometría de las estructuras y parámetros como intensidad, densidad y longitud de fractura con el fin de identificar las zonas más favorables para la infiltración y almacenamiento de fluidos en un área específica. Para llevar a cabo este análisis en la zona sur de la Mesa de Los Santos se empleó el software FracPaQ, el cual mide y cuantifica patrones de fractura en dos dimensiones a partir de datos digitales obtenidos de fotografías de afloramientos; estos datos son mostrados en mapas de rangos y de dispersión para correlacionarlos con atributos geológicos registrados en cada estación. Se presenta también un análisis preliminar del flujo de fluidos en gráficos de conectividad y permeabilidad. Esta cuantificación permitió definir que las fallas NW-SE destacan en el arreglo espacial y por la apertura de las fracturas son potenciales corredores para la circulación de fluidos al sureste de la Mesa de Los Santos. Se propone la zona influenciada por la Falla La Mojarra como un sector de alta porosidad secundaria favorable para la infiltración y flujo subsuperficial asociado al miembro superior de la Formación Los Santos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The quantitative analysis of the fracture system is the use of statistical methods and procedures to determine the structures geometry and the parameters that describe the fracturing such as intensity, density, and fracture length with the purpose of identifying the most favorable areas for infiltration and fluid storage in a specific area. To implement this analysis in the south of the Mesa de Los Santos, the FracPaQ software was used, which measures and quantifies fracture patterns in two dimensions based on digital data obtain from outcrops photograph. This data is shown in range and dispersion maps to correlate with geologic attributes taken from each station. As additional information, a preliminary analysis of the flow of fluids is presented in graphs of connectivity and permeability in the direction of the flow. This quantification allowed establishing that the NW-SE faults stand out in the spatial arrangement and opening of the fractures, acting as the main corridors for the circulation of fluids in the southeast of the Mesa de Los Santos. We propose the zone influenced by the La Mojarra Fault as a sector of high secondary porosity favorable for infiltration and subsurface flow associated with the upper member of the Los Santos Formation.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Análisis estadístico]]></kwd>
<kwd lng="es"><![CDATA[Patrones de fractura]]></kwd>
<kwd lng="es"><![CDATA[FracPaQ]]></kwd>
<kwd lng="es"><![CDATA[Ventanas circulares]]></kwd>
<kwd lng="es"><![CDATA[Flujo de fluidos]]></kwd>
<kwd lng="en"><![CDATA[Statistical analysis]]></kwd>
<kwd lng="en"><![CDATA[Fracture patterns]]></kwd>
<kwd lng="en"><![CDATA[FracPaQ]]></kwd>
<kwd lng="en"><![CDATA[Circular windows]]></kwd>
<kwd lng="en"><![CDATA[Fluid flow]]></kwd>
</kwd-group>
</article-meta>
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