<?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>S0120-02832018000300049</article-id>
<article-id pub-id-type="doi">10.18273/revbol.v40n3-2018003</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Morfometría, estratigrafía, petrografía y geoquímica del cono de escoria El Morro, municipio La Argentina (Huila, Colombia)]]></article-title>
<article-title xml:lang="en"><![CDATA[Morphometry, stratigraphy, petrography, and geochemistry of El Morro scoria cone, La Argentina municipality (Huila, Colombia)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez]]></surname>
<given-names><![CDATA[Lyna M]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez]]></surname>
<given-names><![CDATA[John J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional de Colombia Departamento de Geociencias ]]></institution>
<addr-line><![CDATA[Bogotá Cundinamarca]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional de Colombia Departamento de Geociencias y Medio Ambiente ]]></institution>
<addr-line><![CDATA[Medellín Antioquia]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2018</year>
</pub-date>
<volume>40</volume>
<numero>3</numero>
<fpage>49</fpage>
<lpage>65</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-02832018000300049&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-02832018000300049&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-02832018000300049&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El presente trabajo es un aporte al conocimiento geológico del Centro Eruptivo El Morro (CEM), ubicado en el departamento de Huila (Colombia), mediante el análisis morfométrico del edificio, levantamiento estratigráfico de los depósitos piroclásticos, y el análisis petrográfico y geoquímico de los clastos juveniles. Los depósitos piroclásticos fueron caracterizados en cuanto a la geometría de las capas, variaciones texturales y granulométricas, mineralogía, y composición química de roca total. El CEM es un cono de escorias simple y bien preservado, por lo que se presupone relativamente joven. Es un centro eruptivo máfico compuesto principalmente por depósitos piroclásticos, agrupados en tres paquetes de acumulación distinguibles a escala de afloramiento por la gradación variable normal e inversa. Los clastos principalmente juveniles que conforman los paquetes estratigráficos varían en tamaño entre ceniza y bomba. La petrografía y geoquímica de los clastos del CEM indican emisión de un magma basáltico. A partir de las relaciones morfométricas y los diagramas de discriminación del ambiente geotectónico se concluyó que los fragmentos analizados sugieren afinidad con arco continental y su ambiente de formación está asociado a subducción.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT This work is a contribution to the geological knowledge of El Morro eruptive center (CEM), located in the State of Huila (Colombia), by means of the morphometric analysis of the edifice, stratigraphic survey of pyroclastic deposits, and petrographic and geochemical analysis of juvenile clasts. The pyroclastic deposits were characterized in terms of the geometry of the layers, textural and granulometric variations, mineralogy, and whole-rock chemistry. The CEM is a simple and well-preserved scoria cone, and thus it is considered young. It is a mafic eruptive center, composed by pyroclastic deposits, grouped in three distinguishable accumulation packages at the outcrop scale by their normal-to-reverse variable grading. The mostly juvenile clasts that make up the stratigraphic packages vary in size between ash and bomb. The petrography and geochemistry of the CEM clasts indicate the emission of a basaltic magma. From the morphometric relationships and the discrimination diagrams for the geotectonic environment, it was concluded that the fragments analyzed suggest affinity with continental arc basalts and their formation environment is associated to subduction.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Cono de escoria El Morro]]></kwd>
<kwd lng="es"><![CDATA[estratigrafía]]></kwd>
<kwd lng="es"><![CDATA[geoquímica]]></kwd>
<kwd lng="es"><![CDATA[morfometría]]></kwd>
<kwd lng="es"><![CDATA[petrografía]]></kwd>
<kwd lng="en"><![CDATA[El Morro scoria cone]]></kwd>
<kwd lng="en"><![CDATA[stratigraphy]]></kwd>
<kwd lng="en"><![CDATA[geochemistry]]></kwd>
<kwd lng="en"><![CDATA[morphometry]]></kwd>
<kwd lng="en"><![CDATA[petrography]]></kwd>
</kwd-group>
</article-meta>
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