<?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>S1405-33222016000300395</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Caracterización geoquímica de las manifestaciones termales intermareales de Bahía Concepción en la Península de Baja California]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Leal-Acosta]]></surname>
<given-names><![CDATA[María Luisa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Prol-Ledesma]]></surname>
<given-names><![CDATA[Rosa María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad del Mar Instituto de Industrias ]]></institution>
<addr-line><![CDATA[ Oaxaca]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Geofísica ]]></institution>
<addr-line><![CDATA[CDMX ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2016</year>
</pub-date>
<volume>68</volume>
<numero>3</numero>
<fpage>395</fpage>
<lpage>407</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-33222016000300395&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-33222016000300395&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-33222016000300395&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: La presencia de manifestaciones hidrotermales en las costas de Bahía Concepción está asociada al régimen tectónico extensivo que generó la formación del Golfo de California. En este trabajo son analizadas las características geoquímicas de los manantiales intermareales para determinar la posible presencia de uno o varios yacimientos geotérmicos asociados con los diferentes grupos de manifestaciones superficiales. La temperatura de descarga más alta medida en los manantiales termales de la zona de estudio fue de 66 °C, la cual se registró en la zona intermareal de La Posada. Las aguas termales de Bahía Concepción corresponden al tipo sódico-cloruradas y su composición química e isotópica indica la incidencia de fenómenos de mezcla con agua de mar y probablemente con agua de alta salinidad. Comparado con el agua del mar, el agua termal presentó bajas concentraciones de Na+, Cl-, Mg2+, SO42- y HCO3 - y alta concentración de Si y cationes tales como Ca2+, Sr2+ y K+. La composición isotópica indicó que el agua termal de las manifestaciones intermareales en la parte norte de la bahía, se ajustan a una línea de mezcla de agua de mar con un corrimiento hacia el enriquecimiento de 18O, debido a la interacción de agua con la roca. Por lo tanto, es probable que un solo reservorio alimente todos los manantiales analizados.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: The presence of hydrothermal manifestations on the coast of Bahía Concepción is associated with an extensional tectonic regime related to the formation of the Gulf of California. In this work, the geochemical composition of the intertidal springs is analysed to characterize the geothermal reservoirs associated with different groups of superficial manifestations. The La Posada hot springs present the highest temperature of the intertidal springs in the study area (66 °C). The hot springs in Bahía Concepción correspond to the sodium-chloride type and its chemical and isotopic composition shows the incidence of mixing phenomena with seawater and probably with high salinity. Compared to seawater, the thermal water has lower concentrations of Na+, Cl-, Mg2+, SO42+ and HCO3 - ions, and higher concentrations of Si and cations such as Ca2+, Sr2+ and K+. The isotopic composition indicates that the thermal water from the intertidal manifestations in the northern part of the bay lies along a mixing line of sea water with groundwater with a shift towards oxygen enrichment due to water-rock interaction. Therefore, it is likely that one single reservoir feeds all sampled hot springs.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[geotermia]]></kwd>
<kwd lng="es"><![CDATA[manantiales geotermales intermareales]]></kwd>
<kwd lng="es"><![CDATA[yacimiento geotermal]]></kwd>
<kwd lng="es"><![CDATA[México]]></kwd>
<kwd lng="en"><![CDATA[geothermics]]></kwd>
<kwd lng="en"><![CDATA[intertidal geothermal hot springs]]></kwd>
<kwd lng="en"><![CDATA[geothermal reservoir]]></kwd>
<kwd lng="en"><![CDATA[Mexico]]></kwd>
</kwd-group>
</article-meta>
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<surname><![CDATA[González-Partida]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<source><![CDATA[International Geology Reviews]]></source>
<year>2012</year>
<volume>54</volume>
<numero>8</numero>
<issue>8</issue>
<page-range>907-19</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
