<?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>S0120-02832023000300079</article-id>
<article-id pub-id-type="doi">10.18273/revbol.v45n3-2023005</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[General considerations on the genesis of Uranium and Vanadium occurrence in the Cretaceous sedimentary rocks of the Berlin Synclinal, Central Cordillera (Colombian Andes)]]></article-title>
<article-title xml:lang="es"><![CDATA[Consideraciones generales sobre la génesis de la ocurrencia de uranio y vanadio en las rocas sedimentarias Cretácicas del Sinclinal de Berlín Cordillera Central (Andes Colombianos)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cáceres-Bottia]]></surname>
<given-names><![CDATA[Andrés]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mantilla-Figueroa]]></surname>
<given-names><![CDATA[Luis Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ríos-Reyes]]></surname>
<given-names><![CDATA[Carlos Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pimiento-Rueda]]></surname>
<given-names><![CDATA[Robinson]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Industrial de Santander  ]]></institution>
<addr-line><![CDATA[Bucaramanga ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<volume>45</volume>
<numero>3</numero>
<fpage>79</fpage>
<lpage>93</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-02832023000300079&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-02832023000300079&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-02832023000300079&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The mineralization at the Berlin project in Colombia presents a huge interest based on its relatively high uranium and vanadium concentrations (0.11% U3O8) and (0.45% V2O5), with a suite of other economically interesting elements, all of them necessary to achieve the energy transition, including Y, Re, Ag, and P. The present research suggests a hypothesis for the U and V mineralization: an epigenetic origin. The results indicate that the source for U, V, and the other economic elements associated, were released from the black shales of the Abejorral Formation that is overlying a carbonate succession of Cretaceous wackestone. Those elements were transported in diagenetic fluids under specific physical and geochemical conditions. Efficient strata-bound trap occurred when the carbonate succession triggered a redox front that interacted not only with mineralized fluids, but organic matter and H2S.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La mineralización en el proyecto Berlín en Colombia es de interés por varias razones, entre estas sus concentraciones relativamente altas de uranio (0,11% U3O8) y vanadio (0,45% V2O5), además de la aparición de otros elementos que pueden ser económicamente interesantes y necesarios para lograr la transición energética, tales como Y, Re, Ag y P. En el presente estudio se propone una hipótesis para el origen de la mineralización de uranio y vanadio: un origen epigenético. Los resultados indican que la fuente del uranio, el vanadio y los otros elementos económicos asociados proviene principalmente de las lutitas carbonosas de la formación Abejorral que sobreyacen una sucesión de wackestones del Cretácico. Los elementos de interés fueron transportados mediante fluidos diagenéticos bajo condiciones físicas y geoquímicas específicas. La trampa de la mineralización ocurre de manera estratoligada debido a un frente de reducción durante la interacción con materia orgánica y H2S, la cual es detonada y atrapada por la sucesión de carbonatos.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Uranium]]></kwd>
<kwd lng="en"><![CDATA[Vanadium]]></kwd>
<kwd lng="en"><![CDATA[Epigenetic]]></kwd>
<kwd lng="en"><![CDATA[Energy transition]]></kwd>
<kwd lng="es"><![CDATA[Uranio]]></kwd>
<kwd lng="es"><![CDATA[Vanadio]]></kwd>
<kwd lng="es"><![CDATA[Epigenético]]></kwd>
<kwd lng="es"><![CDATA[Transición energética]]></kwd>
</kwd-group>
</article-meta>
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