<?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>S1405-33222022000300011</article-id>
<article-id pub-id-type="doi">10.18268/bsgm2022v74n3a140622</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Environmental variation in the early and middle Holocene in Tequendama and Aguazuque archaeological sites, Colombia]]></article-title>
<article-title xml:lang="es"><![CDATA[Variación ambiental en los sitios arqueológicos del Holoceno temprano y medio de Tequendama y Aguazuque, Colombia]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Triana Vega]]></surname>
<given-names><![CDATA[Angélica Viviana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez Crespo]]></surname>
<given-names><![CDATA[Víctor Adrián]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,University of Colombia  Faculty of Cultural Heritage Studies]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,University of the Andes Department of Anthropology ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,National Autonomous University of Mexico Institute of Geology ]]></institution>
<addr-line><![CDATA[ CDMX]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2022</year>
</pub-date>
<volume>74</volume>
<numero>3</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-33222022000300011&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-33222022000300011&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-33222022000300011&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT This study focuses on identifying possible environmental variations and plant availability during the occupation in two archaeological sites: Tequendama and Aguazuque, located in Sabana de Bogotá, Colombia. Those sites represent periods of occupation during the early to middle Holocene that contributes valuable information about hunter-gatherers who occupied this area. Data obtained and recovered archaeological material during excavations shed light on relatively continuous occupations until the late Holocene. The presence of lithic artefacts, human and fauna bone remains offered relevant information to comprehend social dynamics among these human groups; likewise, phytolith and stable isotope analysis on sediments and fauna were carried out to identify environmental variations, and the presence of plant remains in these archaeological contexts. Carbon isotope analysis in sediments indicated the prevalence of plants C3 from the early Holocene. In turn, isotopic relationships in carbon obtained from mammals&#8217; dental enamel found in both sites suggest that those animals consumed such types of plants. Also, isotopic values in oxygen from dental enamel show humid and possibly cold environmental conditions in both locations. Also, phytolith analyses provide evidence on the types of plants available in determined contexts and reconstruct environments, use, and availability. Those three types of analysis were applied to archaeological contexts to determine the presence of plants type C3 or C4 available in the sites, which permitted to evidence of environmental changes, humid conditions, and, in a few cases, drought across occupation, as well as the differences in terms of the presence or absence of certain types of plants during chronological periods, suggesting a possible association of horticultural processes and domestication during middle Holocene in Aguazuque archaeological site.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN La presente investigación se concentró en identificar si existen variaciones ambientales y la disponibilidad de plantas durante la ocupación de los sitios arqueológicos de Tequendama y Aguazuque ubicados en la Sabana de Bogotá, Colombia. Dichos sitios representan periodos de ocupación durante el Holoceno temprano y medio, aportando una valiosa información acerca de los cazadores-recolectores que ocuparon este espacio. Los datos obtenidos y el material arqueológico recuperado durante las excavaciones dan cuenta de ocupaciones casi continuas hasta el Holoceno tardío inicial. La presencia de artefactos líticos, restos óseos humanos y de fauna aportaron información importante para ampliar las dinámicas sociales de estos grupos; así mismo, se contemplaron análisis especializados como los fitolitos e isótopos estables en sedimento y fauna que permitieran comprender las variaciones ambientales y la presencia de plantas en estos contextos arqueológicos. Los análisis isotópicos de carbono en los sedimentos indican que la prevalencia de plantas C3 desde el Holoceno temprano y en el caso de las relaciones isotópicas de carbono procedentes del esmalte de los mamíferos hallados en ambos sitios indican que estos animales consumían este tipo de plantas. Asimismo, los valores isotópicos de oxígeno del esmalte dental muestran condiciones húmedas y posiblemente frías en ambas localidades. Los análisis de fitolitos permiten evidenciar el tipo de plantas disponibles en determinados contextos y reconstruir ambientes, uso y disponibilidad de plantas. Estos tres análisis fueron aplicados a los contextos arqueológicos para determinar la presencia de plantas tipo C3 o C4 disponibles en los sitios, lo anterior, permitió evidenciar los cambios ambientales ocurridos a nivel de sitio, las condiciones de humedad o en algunos casos de sequía a lo largo de la ocupación y las diferencias existentes en la presencia o ausencia de cierto tipo de plantas por periodos cronológicos que sugiere quizá una asociación a procesos de horticultura y domesticación durante el Holoceno medio para el sitio de Aguauzuque.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[carbon stable isotopes]]></kwd>
<kwd lng="en"><![CDATA[phytoliths]]></kwd>
<kwd lng="en"><![CDATA[early and middle Holocene]]></kwd>
<kwd lng="en"><![CDATA[hunter-gatherers]]></kwd>
<kwd lng="en"><![CDATA[Sabana de Bogotá]]></kwd>
<kwd lng="en"><![CDATA[Colombia]]></kwd>
<kwd lng="es"><![CDATA[isótopos estables de carbono]]></kwd>
<kwd lng="es"><![CDATA[fitolitos]]></kwd>
<kwd lng="es"><![CDATA[Holoceno temprano y medio]]></kwd>
<kwd lng="es"><![CDATA[cazadores-recolectores]]></kwd>
<kwd lng="es"><![CDATA[Sabana de Bogotá]]></kwd>
<kwd lng="es"><![CDATA[Colombia]]></kwd>
</kwd-group>
</article-meta>
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