<?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>0256-7024</journal-id>
<journal-title><![CDATA[Revista Geológica de América Central]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Geol. Amér. Central]]></abbrev-journal-title>
<issn>0256-7024</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Costa Rica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0256-70242021000200072</article-id>
<article-id pub-id-type="doi">10.15517/rgac.v0i65.46695</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[El carbón y la turba de la cuenca de Limón, Costa Rica]]></article-title>
<article-title xml:lang="en"><![CDATA[The coal and peat of Limón Basin, Costa Rica]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bolaños]]></surname>
<given-names><![CDATA[Kenneth]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Denyer]]></surname>
<given-names><![CDATA[Percy]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Geología Aplicaciones S.A  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Costa Rica Centro de Investigación en Ciencias Geológicas ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de Costa Rica Escuela Centroamericana de Geología ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</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>
<numero>65</numero>
<fpage>72</fpage>
<lpage>86</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S0256-70242021000200072&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S0256-70242021000200072&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S0256-70242021000200072&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La cuenca de Limón Sur, en la región Caribe de Costa Rica, fue investigada en los años ochenta por sus recursos carboníferos. Se hizo una descripción e interpretación geológica a escala detallada, que incluyó gran cantidad de perforaciones, con profundidades promedio de 200 m. El carbón se encuentra en capas métricas intercaladas en la parte inferior del miembro medio de la unidad geológica conocida como Formación Río Banano, cuya edad varía desde el Mioceno Superior hasta el Plioceno. Se trata de una secuencia sedimentaria, depositada en un ambiente predominantemente deltaico. Desde un punto de vista litológico, corresponde con arcillolitas, limolitas y areniscas, hasta conglomerados. La exploración de carbón, se concentró principalmente las áreas de Zent y Uatsi. También se cartografiaron y describieron los depósitos de turba en varias localidades de la cuenca de Limón. En total, se evaluaron alrededor de 47 millones de toneladas métricas de carbón subbituminoso B y C, con un poder calórico entre 4500 y 5500 kcal/kg, que se estimó mineable en una combinación de minería subterránea y a cielo abierto. El impacto ambiental y la cobertura de material estéril son dos de las características más negativas para una eventual explotación de este recurso.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The South Limón basin, located in the Caribbean region of Costa Rica, was investigated in the 1980's for its coal resources. A detailed geological description and interpretation was made, which included a large number of drilling, with average depths of 200 m. Coal is found in metric layers interbedded in the lower part of the middle member of the geological unit which is known as the Río Banano Formation, whose age varies from the Upper Miocene to the Pliocene. It is a sedimentary sequence deposited in a predominantly deltaic environment. From a lithological point of view, it corresponds to claystones, siltstones and sandstones, up to conglomerates. Coal exploration was mainly concentrated in the areas of Zent and Uatsi. Peat deposits were also mapped and described at various locations of Limón basin. In total, around 47 million metric tons of subbituminous coal B and C were evaluated, with a caloric value between 4500 and 5500 kcal / kg, which was estimated to be mined in a combination of underground and open-pit mining. The environmental impact and the coverage of sterile material are two of the most negative characteristics for an eventual exploitation of this resource.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Mineral Exploration]]></kwd>
<kwd lng="en"><![CDATA[Non-Metallic Mineral Deposit]]></kwd>
<kwd lng="en"><![CDATA[Energy Material]]></kwd>
<kwd lng="en"><![CDATA[Peat]]></kwd>
<kwd lng="en"><![CDATA[Uatsi]]></kwd>
<kwd lng="en"><![CDATA[Zent]]></kwd>
<kwd lng="es"><![CDATA[Exploración minera]]></kwd>
<kwd lng="es"><![CDATA[yacimiento no metálico]]></kwd>
<kwd lng="es"><![CDATA[material energético]]></kwd>
<kwd lng="es"><![CDATA[turba]]></kwd>
<kwd lng="es"><![CDATA[Uatsi]]></kwd>
<kwd lng="es"><![CDATA[Zent]]></kwd>
</kwd-group>
</article-meta>
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