<?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>1026-8774</journal-id>
<journal-title><![CDATA[Revista mexicana de ciencias geológicas]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. cienc. geol]]></abbrev-journal-title>
<issn>1026-8774</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Instituto de Geología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1026-87742017000100045</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Laramide to Miocene syn-extensional plutonism in the Puerta del Sol area, central Sonora, Mexico]]></article-title>
<article-title xml:lang="es"><![CDATA[Magmatismo Laramide a plutonismo sinextensional del Mioceno en el área de Puerta del Sol, Sonora Central, México]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Becuar]]></surname>
<given-names><![CDATA[Elizard]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Segura]]></surname>
<given-names><![CDATA[Efrén]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vega-Granillo]]></surname>
<given-names><![CDATA[Ricardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Solari]]></surname>
<given-names><![CDATA[Luigi]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-León]]></surname>
<given-names><![CDATA[Carlos M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Solé]]></surname>
<given-names><![CDATA[Jesús]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López Martínez]]></surname>
<given-names><![CDATA[Margarita]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Sonora Departamento de Geología ]]></institution>
<addr-line><![CDATA[Hermosillo Sonora]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional Autónoma de México Centro de Geociencias ]]></institution>
<addr-line><![CDATA[Querétaro Qro.]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Geología ]]></institution>
<addr-line><![CDATA[Hermosillo Sonora]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Geología ]]></institution>
<addr-line><![CDATA[Ciudad Universitaria Cd. de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE) Departamento de Geología ]]></institution>
<addr-line><![CDATA[Ensenada Baja California]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2017</year>
</pub-date>
<volume>34</volume>
<numero>1</numero>
<fpage>45</fpage>
<lpage>61</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1026-87742017000100045&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1026-87742017000100045&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1026-87742017000100045&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: Plutonic rocks of the Puerta del Sol area, in central Sonora, rep-resent the extension to the south of the El Jaralito batholith, and are part of the footwall of the Sierra Mazatán metamorphic core complex, whose low-angle detachment fault bounds the outcrops of plutonic rocks to the west. Plutons in the area record the magmatic evolution of the Laramide arc and the Oligo-Miocene syn-extensional plutonism in Sonora. The basement of the area is composed by the ca. 1.68 Ga El Palofierral orthogneiss that is part of the Caborca block. The Laramide plutons include the El Gato diorite (71.29 ± 0.45 Ma, U-Pb), the El Pajarito granite (67.9 ± 0.43 Ma, U-Pb), and the Puerta del Sol grano-diorite (49.1 ± 0.46 Ma, U-Pb). The younger El Oquimonis granite (41.78 ± 0.32 Ma, U-Pb) is considered part of the scarce magmatism that in Sonora records a transition to the Sierra Madre Occidental magmatic event. The syn-extensional plutons are the El Garambullo gabbro (19.83 ± 0.18 Ma, U-Pb) and the Las Mayitas granodiorite (19.2 ± 1.2 Ma, K-Ar). A migmatitic event that affected the El Palofierral orthogneiss, El Gato diorite, and El Pajarito granite between ca. 68 and 59 Ma might be related to the emplacement of the El Pajarito granite. The plutons are metaluminous to slightly peraluminous, with the exception of El Oquimonis granite, which is a peraluminous two-mica, garnet-bearing granite. They are mostly high-K calc-alkaline with nearly uniform chondrite-normalized REE and primitive-mantle normalized multielemental patterns that are characteristic of continental margin arcs and resemble patterns reported for other Laramide granites of Sonora. The Laramide and syn-extensional plutons also have Sr, Nd and Pb isotopic ratios that plot within the fields reported for Laramide granites emplaced in the Caborca terrane in northwestern and central Sonora. Nevertheless, and despite their geochemical affinity to continental magmatic arcs, the El Garambullo gabbro and Las Mayitas granodiorite are syn-extensional plutons that were emplaced at ca. 20 Ma during development of the Sierra Mazatán metamorphic core complex. The 40Ar/39Ar and K-Ar ages obtained for the El Palofierral orthogneiss, the Puerta del Sol granodiorite, the El Oquimonis granite, and the El Garambullo gabbro range from 26.3 ± 0.6 to 17.4 ± 1.0 Ma and are considered cooling ages associated with the exhumation of the metamorphic core complex.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: El área de Puerta del Sol, en el centro de Sonora, se encuentra en la parte sur del batolito El Jaralito y es parte de la placa inferior del complejo de núcleo metamórfico de la Sierra Mazatán, cuya falla de despegue limita sus afloramientos en su parte occidental. La geología la forman varios plutones que registran la evolución magmática del arco Laramide hasta el plutonismo sinextensional del Oligioceno-Mioceno de Sonora. El basamento del área lo forma el ortogneis El Palofierral cuya edad de ca. 1.68 Ga (U-Pb) lo hace pertenecer al basamento del bloque Caborca. Los plutones laramídicos incluyen a la diorita El Gato (71.29 ± 0.45 Ma, U-Pb), el granito El Pajarito (67.9 ± 0.43 Ma, U-Pb) y la granodiorita Puerta del Sol (49.1 ± 0.46 Ma, U-Pb). El granito El Oquimonis (41.78 ± 0.32 Ma, U-Pb) es un plutón más joven considerado parte del escaso magmatismo regional transicional al de la Sierra Madre Occidental. Los plutones sinextensionales están representados por el gabro El Garambullo (19.83 ± 0.18 Ma, U-Pb) y la granodiorita Las Mayitas (19.2 ± 1.2 Ma, K-Ar). Un evento migmatítico que ocurrió entre ca. 68 y 59 Ma afectó al ortogneis El Palofierral, a la diorita El Gato y al granito El Pajarito y pudiera estar relacionado a la intrusión de este último. Los plutones del área son metaluminosos a ligeramente peraluminosos, con excepción del granito El Oquimonis que es peraluminoso, de dos micas y con granate. Estas rocas son principalmente calcialcalinas, altas en K, con patrones muy similares en diagramas de tierras raras normalizados a condrita y diagramas multielementales normalizados a manto primitivo, los cuales indican firmas características del magmatismo de arco en zonas de subducción asociadas a márgenes continentales. Tienen además relaciones isotópicas de Nd, Sr y Pb similares a valores reportados para los granitos laramídicos emplazados en rocas del terreno Caborca en el noroeste y centro de Sonora. Sin embargo, y a pesar de su afinidad geoquímica con magmatismo de arco, el gabro El Garambullo y la granodiorita Las Mayitas son plutones emplazados durante la extensión asociada al complejo de núcleo metamórfico de la Sierra Mazatán, tal como lo indican sus edades de ca. 20 Ma. Las edades 40Ar/39Ar y K-Ar obtenidos para el ortogneis El Palofierral, la granodiorita Puerta del Sol, el granito El Oquimonis y el gabro El Garambullo tienen un rango de 26.3 ± 0.6 a 17.4 ± 1.0 Ma y se consideran edades de enfriamiento asociadas a la exhumación del complejo de núcleo metamórfico de la Sierra de Mazatán.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Laramide magmatism]]></kwd>
<kwd lng="en"><![CDATA[syn-extensional plutonism]]></kwd>
<kwd lng="en"><![CDATA[geochronology]]></kwd>
<kwd lng="en"><![CDATA[geochemistry]]></kwd>
<kwd lng="en"><![CDATA[Sr-Nd-Pb isotopes]]></kwd>
<kwd lng="en"><![CDATA[Sonora]]></kwd>
<kwd lng="en"><![CDATA[Mexico]]></kwd>
<kwd lng="es"><![CDATA[magmatismo Laramide]]></kwd>
<kwd lng="es"><![CDATA[plutonismo sinextensional]]></kwd>
<kwd lng="es"><![CDATA[geocronología]]></kwd>
<kwd lng="es"><![CDATA[geoquímica]]></kwd>
<kwd lng="es"><![CDATA[isótopos de Sr-Nd-Pb]]></kwd>
<kwd lng="es"><![CDATA[Sonora]]></kwd>
<kwd lng="es"><![CDATA[México]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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