<?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>S0120-02832019000300163</article-id>
<article-id pub-id-type="doi">10.18273/revbol.v41n3-2019008</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Tomografía Sísmica 2.5D y rasgos geológicos en la Cuenca de Urabá (Colombia)]]></article-title>
<article-title xml:lang="en"><![CDATA[2.5D Seismic tomography and geological features in the Urabá Basin (Colombia)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Castillo-López]]></surname>
<given-names><![CDATA[Luis Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González]]></surname>
<given-names><![CDATA[John Fredy]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Duitama]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidade Federal do Amazonas  ]]></institution>
<addr-line><![CDATA[Manaos ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Cundinamarca  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad El Bosque  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2019</year>
</pub-date>
<volume>41</volume>
<numero>3</numero>
<fpage>163</fpage>
<lpage>174</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-02832019000300163&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-02832019000300163&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-02832019000300163&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Existe poca información y conocimiento geológico de la Cuenca de Urabá. A continuación, se presentan los resultados del estudio tomográfico pseudo-3D (o 2.5D) para la cuenca. Los datos de tipo sismológico (sísmica pasiva) permiten definir una aproximación de la disposición de algunos rasgos geológicos en el subsuelo, por ejemplo, lineamientos y fallas. Así, mediante la diferencia de tiempos de viaje de las ondas (P y S), registrados en campo e implementando un algoritmo de inversión de tomografía sísmica, se desarrolló un modelo para estimar las fuentes sísmicas y la distribución de velocidades en la región, además de evaluar la disposición de las capas de roca en el subsuelo hasta 30 km de profundidad, con las que se hizo posible identificar contrastes de velocidades y una posible extensión de las fallas; caso de la falla de Murindó hacia el norte, y otra falla con orientación transversal, ubicada en el sector de Riosucio.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT There is little information and geological knowledge of the Urabá Basin. The results of the pseudo-3D (or 2.5D) tomographic study for the basin are presented. However, seismological data (passive seismic) allow an approximation of the disposition of some geological features in the subsurface, for example, guidelines and faults. Thus, by mean of the difference of travel times of the waves (P and S) that were recorded in the field and implementing a seismic inversion algorithm, a model was developed. This allowed estimating the seismic sources and the velocity distribution, also, to evaluate the disposition of the layers of rock in the subsurface until about 30 km of depth. With this, a contrast of velocity and a possible extension of the faults were identified, in the case of the Murindó fault to the north, and another fault with transverse orientation located in the Riosucio area.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Cuenca de Urabá]]></kwd>
<kwd lng="es"><![CDATA[Fallas]]></kwd>
<kwd lng="es"><![CDATA[Tomografía Sísmica]]></kwd>
<kwd lng="es"><![CDATA[2.5D.]]></kwd>
<kwd lng="en"><![CDATA[Urabá Basin]]></kwd>
<kwd lng="en"><![CDATA[Faults]]></kwd>
<kwd lng="en"><![CDATA[Seismic Tomography]]></kwd>
<kwd lng="en"><![CDATA[2.5D.]]></kwd>
</kwd-group>
</article-meta>
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