<?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>0016-7169</journal-id>
<journal-title><![CDATA[Geofísica internacional]]></journal-title>
<abbrev-journal-title><![CDATA[Geofís. Intl]]></abbrev-journal-title>
<issn>0016-7169</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Instituto de Geofísica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0016-71692021000200101</article-id>
<article-id pub-id-type="doi">10.22201/igeof.00167169p.2021.60.2.2085</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Geophysical-Structural Framework in a Mineralized Region of Northwesternmost Camaquã Basin, Southern Brazil]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pereira]]></surname>
<given-names><![CDATA[Henrique Garcia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ferreira]]></surname>
<given-names><![CDATA[Francisco José Fonseca]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Moreira]]></surname>
<given-names><![CDATA[César Augusto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Silva]]></surname>
<given-names><![CDATA[Vinicius Antunes Ferreira da]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Federal University of Paraná Department of Geology Laboratory for Research in Applied Geophysics and Geology Graduate Program]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Federal University of Paraná Department of Geology Laboratory for Research in Applied Geophysics]]></institution>
<addr-line><![CDATA[Paraná ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,São Paulo State University Department of Applied Geology Geosciences and Exact Sciences Institute]]></institution>
<addr-line><![CDATA[São Paulo ]]></addr-line>
<country>Brazil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<volume>60</volume>
<numero>2</numero>
<fpage>101</fpage>
<lpage>123</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0016-71692021000200101&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0016-71692021000200101&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0016-71692021000200101&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Airborne and ground magnetic and gravimetric maps provide important information about the spatial distribution of causative sources in the geological substrate. These sources normally have different physical properties and geometric shapes and are located at different depths, making it difficult to identify the geological features that correspond to the sources. Filtering and enhancement techniques can be used to highlight features in potential field anomalies (such as center and edges of sources). Also, these techniques remove associated noise, isolate shallow from deep sources, and estimate depths. We applied enhancement and depth estimation techniques in airborne and ground potential field data to delineate a subsurface structural framework of two copper occurrences (Victor Teixeira and Capão Grande) in the northwestern border of Camaquã Basin with the Sul-Riograndense Shield. Our results confirmed previously recognized structures and revealed an interconnected structural framework, which has an estimated depth of 170 m by Euler solutions. This configuration suggests a possible connection between the two mineralization outcrops, which are separated by a distance of 2,300 m.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Los mapas magnéticos y gravimétricos (aéreos y/o terrestres) suministran información importante sobre la distribución espacial de las fuentes del sustrato geológico, las cuales normalmente tienen propiedades físicas y geometrías diferentes. Estas fuentes también pueden estar localizadas a distintas profundidades, complicando la identificación de las correspondientes estructuras geológicas. Técnicas de filtrado y de realce de anomalías potenciales, pueden ser utilizadas para realzar ciertas características de interés (como el centro y el borde de las fuentes), para remover aquellas características asociadas a ruidos, para separar las anomalías de las fuentes superficiales y profundas, así como estimar sus profundidades. En este trabajo se analizan los resultados de la utilización de técnicas de realce y estimación de profundidad de las fuentes con datos geofísicos aéreos y terrestres potenciales, con el objetivo de delinear una imagen estructural del subsuelo en un área con dos ocurrencias de cobre en el límite noroeste, entre las rocas del Escudo Sul-Riograndense y la Cuenca del Camaquã. Los resultados confirman estructuras que han sido reconocidas previamente y revelan otras estructuras geológicas que integran una malla estructural interconectada, cuya profundidad, estimada por las soluciones de Euler, alcanzan los 170 m. Esta configuración sugiere una probable conexión entre las mineralizaciones de cobre observadas en los afloramientos, separados por un intervalo de 2,300 m.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Magnetometría]]></kwd>
<kwd lng="es"><![CDATA[Gravimetría]]></kwd>
<kwd lng="es"><![CDATA[Lineamientos]]></kwd>
<kwd lng="es"><![CDATA[Escudo Sul-Riograndense]]></kwd>
<kwd lng="es"><![CDATA[Ocurrencias de Mineralizaciones de Cobre]]></kwd>
<kwd lng="en"><![CDATA[Magnetometry]]></kwd>
<kwd lng="en"><![CDATA[Gravimetry]]></kwd>
<kwd lng="en"><![CDATA[Lineaments]]></kwd>
<kwd lng="en"><![CDATA[Sul-Riograndense Shield]]></kwd>
<kwd lng="en"><![CDATA[Cupriferous Mineralizations]]></kwd>
</kwd-group>
</article-meta>
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