<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="static/style.xsl"?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd"><responseDate>2026-10-21T18:44:46Z</responseDate><request verb="GetRecord" identifier="oai:riubu.ubu.es:10259/5157" metadataPrefix="dim">https://riubu.ubu.es/oai/request</request><GetRecord><record><header><identifier>oai:riubu.ubu.es:10259/5157</identifier><datestamp>2021-11-10T09:38:25Z</datestamp><setSpec>com_10259.4_2560</setSpec><setSpec>com_10259_5086</setSpec><setSpec>com_10259_2604</setSpec><setSpec>col_10259.4_2561</setSpec></header><metadata><dim:dim xmlns:dim="http://www.dspace.org/xmlns/dspace/dim" xmlns:doc="http://www.lyncode.com/xoai" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.dspace.org/xmlns/dspace/dim http://www.dspace.org/schema/dim.xsd">
<dim:field mdschema="dc" element="contributor" qualifier="author" authority="104" confidence="500" orcid_id="">Carrancho Alonso, Ángel</dim:field>
<dim:field mdschema="dc" element="contributor" qualifier="author" authority="307" confidence="500" orcid_id="">Jorge Villar, Susana E.</dim:field>
<dim:field mdschema="dc" element="contributor" qualifier="author" authority="dfbedb61-c227-46df-ba8f-895433c54b4d" confidence="500" orcid_id="">Sánchez Romero, Laura</dim:field>
<dim:field mdschema="dc" element="contributor" qualifier="author" authority="33088f61-2b21-4c5a-bb22-9fbbacd58618" confidence="500" orcid_id="">Karampaglidis, Theodoros</dim:field>
<dim:field mdschema="dc" element="date" qualifier="accessioned">2019-11-05T09:54:59Z</dim:field>
<dim:field mdschema="dc" element="date" qualifier="available">2019-11-05T09:54:59Z</dim:field>
<dim:field mdschema="dc" element="date" qualifier="issued">2019</dim:field>
<dim:field mdschema="dc" element="identifier" qualifier="issn">1405-3322</dim:field>
<dim:field mdschema="dc" element="identifier" qualifier="uri">http://hdl.handle.net/10259/5157</dim:field>
<dim:field mdschema="dc" element="description" qualifier="abstract" lang="es">Se  presentan  los  resultados  arqueomagnéticos,  de  propiedades  magnéticas  y  espectroscopia  Raman  obtenidos  de  analizar  muestras  de  dos  tipos  de  calizas  calentadas  experimentalmente  bajo  con-diciones controladas. Estas calizas han sido fre-cuentemente  identificadas  en  los  yacimientos  de  paleolítico medio de Cueva Descubierta y Abrigo de Navalmaíllo (Pinilla del Valle, Madrid, Es-paña). Mediante un sistema de termopares, se re-gistraron temperaturas máximas de calentamiento de 400-450 ºC durante una hora. El objetivo es caracterizar las variaciones en la mineralogía fe-rromagnética  y  los  compuestos  (in)orgánicos,  así  como estudiar el registro de la dirección del campo magnético terrestre en el momento del enfriamien-to. Esto permitirá obtener un patrón extrapolable a  las  calizas  arqueológicas  de  cara  a  identificar  estructuras  de  combustión  en  el  yacimiento.  Los  experimentos de ambas técnicas fueron realizados en  muestras  representativas  de  ambas  litologías  tanto antes como después de la quema experimen-tal. Antes de la quema, ambos tipos de caliza es-taban dominados por dolomita y calcita y, como principales  óxidos  de  hierro,  goetita  y  magnetita.  Tras la quema, la goetita original pervivió en las muestras  calentadas  &lt;200  ºC  mientras  que  se  transformó a hematites y/o magnetita en las ca-lentadas en torno a 450 ºC. Las alteraciones mi-neralógicas se centraron mayoritariamente en el 1ercm de profundidad. La neoformación de magnetita como  paso  intermedio  en  el  proceso  de  deshidra-tación de la goetita hacia hematites ha sido poco documentada y tiene implicaciones paleomagnéti-cas. Se discuten los resultados mineralógicos, sus implicaciones para la identificación de fuego en el yacimiento así como sus potenciales aplicaciones a casos de estudio similare.</dim:field>
<dim:field mdschema="dc" element="description" qualifier="abstract" lang="en">Here we report the archaeomagnetic,&#xd;
rock-magnetic and Raman spectroscopy&#xd;
results of sample analysis from two types&#xd;
of limestones that were experimentally&#xd;
heated under controlled conditions.&#xd;
These lithologies have been commonly&#xd;
identified at the middle-palaeolithic sites&#xd;
of Descubierta Cave and Navalmaillo&#xd;
rock-shelter (Pinilla del Valle, Madrid,&#xd;
Spain). By means of a thermocouple system,&#xd;
maximum heating temperatures of&#xd;
400 − 450 ºC were recorded during one&#xd;
hour. The main goal was to characterize&#xd;
the variations in the magnetic mineralogy&#xd;
and (in)organic compounds, and to&#xd;
study the record of the Earth´s magnetic&#xd;
field direction at the time of cooling.&#xd;
This allowed us to obtain a pattern that&#xd;
is potentially applicable to archaeological&#xd;
limestones in order to identify combustion&#xd;
structures at the site. All experiments were&#xd;
carried out on representative samples&#xd;
both before and after experimental heating.&#xd;
Before heating, both types of limestones&#xd;
were dominated by dolomite and&#xd;
calcite and as main iron oxides, goethite&#xd;
and magnetite. After heating, the original&#xd;
goethite persisted in samples heated&#xd;
to low temperatures (&lt;200 ºC) whereas&#xd;
it transformed to haematite and/or magnetite&#xd;
in those heated to 450 ºC. Mineralogical&#xd;
alterations mostly focused on the&#xd;
outermost 1st cm of depth. The neoformation&#xd;
of magnetite as intermediate step&#xd;
in the dehydration process of goethite to&#xd;
haematite has been barely documented&#xd;
and has palaeomagnetic implications.&#xd;
The mineralogical results obtained, their&#xd;
implications for the identification of fire&#xd;
at the site as well as potential applications&#xd;
to similar cases studies are discussed.</dim:field>
<dim:field mdschema="dc" element="description" qualifier="sponsorship">Junta de Castilla y León (projects BU066U16 and BU235P18) and the European Fund for Economic and Regional Development (FEDER)</dim:field>
<dim:field mdschema="dc" element="format" qualifier="mimetype">application/pdf</dim:field>
<dim:field mdschema="dc" element="language" qualifier="iso" lang="es">eng</dim:field>
<dim:field mdschema="dc" element="publisher" lang="es">Sociedad Geológica Mexicana</dim:field>
<dim:field mdschema="dc" element="relation" qualifier="ispartof" lang="es">Boletín de la Sociedad Geológica Mexicana. 2019, V. 71, n. 2, p. 383-396</dim:field>
<dim:field mdschema="dc" element="relation" qualifier="publisherversion" lang="es">http://boletinsgm.igeolcu.unam.mx/bsgm/index.php/volumenes-volumes?id=2002</dim:field>
<dim:field mdschema="dc" element="relation" qualifier="projectID">info:eu-repo/grantAgreement/JCyL/BU066U16</dim:field>
<dim:field mdschema="dc" element="relation" qualifier="projectID">info:eu-repo/grantAgreement/JCyL/BU235P18</dim:field>
<dim:field mdschema="dc" element="rights" qualifier="uri" lang="*">http://creativecommons.org/licenses/by-nc-nd/4.0/</dim:field>
<dim:field mdschema="dc" element="rights" qualifier="holder" lang="*">Attribution-NonCommercial-NoDerivatives 4.0 Internacional</dim:field>
<dim:field mdschema="dc" element="rights" qualifier="accessRights">info:eu-repo/semantics/openAccess</dim:field>
<dim:field mdschema="dc" element="subject" lang="en">Iron oxides</dim:field>
<dim:field mdschema="dc" element="subject" lang="en">experimental fires</dim:field>
<dim:field mdschema="dc" element="subject" lang="en">geoarchaeology</dim:field>
<dim:field mdschema="dc" element="subject" lang="en">hearths</dim:field>
<dim:field mdschema="dc" element="subject" lang="en">Palaeolithic</dim:field>
<dim:field mdschema="dc" element="subject" lang="en">thermal remanent magnetisation</dim:field>
<dim:field mdschema="dc" element="subject" lang="es">Óxidos de hierro</dim:field>
<dim:field mdschema="dc" element="subject" lang="es">fuegos experimentales</dim:field>
<dim:field mdschema="dc" element="subject" lang="es">geoarqueología</dim:field>
<dim:field mdschema="dc" element="subject" lang="es">hogares</dim:field>
<dim:field mdschema="dc" element="subject" lang="es">Paleolítico</dim:field>
<dim:field mdschema="dc" element="subject" lang="es">magnetización termorremanente</dim:field>
<dim:field mdschema="dc" element="subject" qualifier="other" lang="es">Magnetismo</dim:field>
<dim:field mdschema="dc" element="subject" qualifier="other" lang="es">Paleontología</dim:field>
<dim:field mdschema="dc" element="subject" qualifier="other" lang="en">Magnetism</dim:field>
<dim:field mdschema="dc" element="subject" qualifier="other" lang="en">Paleontology</dim:field>
<dim:field mdschema="dc" element="title" lang="en">Combined study of archaeomagnetism and Raman spectroscopy of experimentally burnt limestones from the middle-palaeolithic site of Pinilla del Valle (Madrid, Spain)</dim:field>
<dim:field mdschema="dc" element="type">info:eu-repo/semantics/article</dim:field>
<dim:field mdschema="dc" element="type" qualifier="hasVersion">info:eu-repo/semantics/publishedVersion</dim:field>
</dim:dim></metadata></record></GetRecord></OAI-PMH>