<?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>1405-3322</journal-id>
<journal-title><![CDATA[Boletín de la Sociedad Geológica Mexicana]]></journal-title>
<abbrev-journal-title><![CDATA[Bol. Soc. Geol. Mex]]></abbrev-journal-title>
<issn>1405-3322</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Geológica Mexicana A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-33222023000200107</article-id>
<article-id pub-id-type="doi">10.18268/bsgm2023v75n2a020523</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[El Pinacate volcanic field, Northwest Mexico: An example of a shield cluster]]></article-title>
<article-title xml:lang="es"><![CDATA[Campo volcánico El Pinacate, noroeste de México: Un ejemplo de un cúmulo de escudos]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cañón-Tapia]]></surname>
<given-names><![CDATA[Edgardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Jacobo-Bojórquez]]></surname>
<given-names><![CDATA[Rocío A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro de Investigación Científica y de Educación Superior de Ensenada División de Ciencias de la Tierra ]]></institution>
<addr-line><![CDATA[Ensenada Baja California]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,The University of Arizona College of Science Lunar and Planetary Laboratory]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Estados Unidos</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2023</year>
</pub-date>
<volume>75</volume>
<numero>2</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-33222023000200107&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-33222023000200107&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-33222023000200107&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT El Pinacate volcanic field, Northwest Mexico, includes a large shield volcano (Sta. Clara) and more than 400 vents, most of which are cinder cones and a few maars of Pleistocene and recent age. Previous studies of the distribution of those vents focused on the identification of preferred orientations of vent alignments, paying little attention to the identification of clusters of vents within the field. In this work several methods of spatial distribution analyses are combined together to describe the spatial structure of the distribution. As a result, four main structures are identified, each interpreted as a long-lived volcanic system that has remained active throughout the history of the volcanic activity on the region. Interaction of the axes of activity within those structures with an older listric fault that crosses the field from NW to SE is responsible for the apparent difference in distribution observed in the north and south halves of the field. Differences to the depth of the Curie isotherm also contribute to the observed differences on the vent distribution at the surface. Although the influence of tectonic stresses is very important in controlling the location of activity on this field, in this work we show that it is not necessary to invoke a change in the orientation of those stresses to explain the evolution of the region.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El campo volcánico El Pinacate, en el noroeste de México, incluye un gran volcán en escudo (Sta. Clara) y más de 400 centros eruptivos, la mayoría de los cuales son conos de ceniza con solo algunos maars, del Pleistoceno y más recientes. Estudios previos de la distribución de esos centros eruptivos han descrito su orientación preferente, prestando poca atención a la identificación de grupos. En este trabajo se combinan varios métodos de análisis para describir la estructura espacial de la distribución. Como resultado, se identifican cuatro estructuras principales, cada una interpretada como un sistema volcánico de larga vida que se ha mantenido activo a lo largo de la historia de la actividad volcánica en la región. La interacción de los ejes de actividad dentro de aquellas estructuras con una falla listrica más antigua que cruza el campo de NW a SE es responsable de la aparente diferencia en la distribución observada en las mitades norte y sur del campo. Las diferencias en la profundidad de la isoterma de Curie también contribuyen a las diferencias observadas en la distribución de los respiraderos en la superficie. Aunque la influencia de los esfuerzos tectónicos es muy importante para controlar la ubicación de la actividad en este campo, en este trabajo mostramos que no es necesario invocar un cambio en la orientación de esos esfuerzos para explicar la evolución de la región.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[spatial distribution of volcanic centers]]></kwd>
<kwd lng="en"><![CDATA[Distributed volcanism]]></kwd>
<kwd lng="en"><![CDATA[El Pinacate]]></kwd>
<kwd lng="en"><![CDATA[volcanic field]]></kwd>
<kwd lng="es"><![CDATA[distribución espacial de centros volcánicos]]></kwd>
<kwd lng="es"><![CDATA[Distribución volcanica]]></kwd>
<kwd lng="es"><![CDATA[El Pinacate]]></kwd>
<kwd lng="es"><![CDATA[campos volcánicos]]></kwd>
</kwd-group>
</article-meta>
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