Ana Isabel Ortega

Ana Isabel Ortega
Centro de Investigación sobre la Evolución Humana | CENIEH · Geoarcheology

PhD

About

272
Publications
54,995
Reads
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2,691
Citations
Citations since 2016
38 Research Items
1499 Citations
2016201720182019202020212022050100150200
2016201720182019202020212022050100150200
2016201720182019202020212022050100150200
2016201720182019202020212022050100150200
Additional affiliations
January 2016 - present
Centro de Investigación sobre la Evolución Humana - Fundación Atapuerca
Position
  • PostDoc Position
February 2015 - December 2015
January 2011 - present
Centro de Investigación sobre la Evolución Humana
Position
  • Researcher

Publications

Publications (272)
Article
Full-text available
The evolution of the Torcas cave system (Sierra de Atapuerca) is analysed in order to shed light on the formation of the Atapuerca archaeological sites and human occupation in the area, critical for identifying the paths of the first human dispersal into Europe. The geomorphological analysis of the endokarst system and the regional base levels has...
Article
The Ojo Guareña karst system (OG) is located in the SE Cantabrian Range in northern Spain (Burgos, Spain). It is a multilevel cave system composed of 6 levels and is one of the longest cavities in the Iberian Peninsula (110 km). The spatial patterns and geomorphological characteristics of OG constitute a first-order record for studying the principa...
Article
The Galería de las Estatuas is a Mousterian site located within the Cueva Mayor-Cueva del Silo karstic system at the Sierra de Atapuerca (Burgos, Spain). This site is characterised by an important Upper Pleistocene stratigraphic sequence in which a large number of lithic artefacts exhibiting clear Mousterian affinities and a rich assemblage of faun...
Article
The Cueva del Silo is part of the lower karst level of the Cueva Mayor-Cueva del Silo karst system (Sierra de Atapuerca, Burgos, Spain), whose evolution has preserved an impressive archeo-paleoanthropological sequence since the Early Pleistocene. Cueva del Silo is remarkable for the presence of fluvial deposits that record the entry of the Arlanzón...
Chapter
Full-text available
In 1969, members of Grupo Espeleológico Edelweiss discovered the Sala and Galerías de las Huellas in Ojo Guareña Cave system (Burgos, Spain). These contained hundreds of ancient human footprints, preserved in the soft sediment on the floor. These footprints represent the tracks of a small group of people who walked barefoot through these complex pa...
Article
The Galería Complex is a cave sediment succession at the Atapuerca paleoanthropological site (Burgos, Spain) that offers detailed environmental information about the late Middle Pleistocene, especially the period between marine oxygen isotope stages MIS10 and MIS7. Previous studies have reconstructed the chronology and detailed the environmental de...
Article
Deciphering the origin and depositional history of archaeological and paleontological deposits is fundamental to evaluate artifact and fossil contextualization. We present new rock magnetic data based on the anisotropy of magnetic susceptibility (AMS) that allow the fabric analysis and characterization of depositional modes in cave sediments. This...
Article
Full-text available
The comprehensive study of spaces decorated during the Palaeolithic is able to obtain information about visits to the sites and their uses. However, it is essential to determine the temporal relationship between the different forms of archaeological evidence and not assume their synchronicity with the parietal art. Therefore, numerical dates are ne...
Article
The advantages of active massive data capture devices such as LiDAR (Light Detection And Ranging) in the creation of high-resolution topographic models have been well known for years. They have been widely applied to the documentation of cultural heritage since the beginning of the 21st century. As LiDAR devices, terrestrial laser scanning (TLS) sy...
Article
We used ground-penetrating radar (GPR) to identify a variety of karstic features in the archaeo-paleontological sites of the Sierra the Atapuerca (Burgos, Spain). The aim of this study was to discover the structure of the caves exposed in the 19th century by a railroad trench, specifically their bottom part, which remains covered under the railroad...
Conference Paper
Full-text available
The eastern part of the Cantabrian region is characterized by the presence of several Middle Paleolithic sites, most of them located in caves and rock-shelters (Axlor, Amalda, Arlanpe, Arrillor, Lezetxiki, El Cuco, Ventalapera). The chronology of these sites ranges from ca. MIS6 to MIS3. The ongonig research on some of these sites reveals a high de...
Article
Full-text available
The so-called “Gran Dolina site” (Atapuerca mountain range, N Spain) is a karstic cavity filled by sediments during the Pleistocene, some of which contain a rich ensemble of archaeological and paleontological records. These sediments have contributed significantly to our understanding of early human dispersal in Europe but, in contrast, older, inte...
Article
Full-text available
The Sierra de Atapuerca karst is an interesting inactive multilevel cave system, which is the result of the action of ancient base levels during the Plio-Pleistocene. It contains one of the most important prehistoric sites for the understanding of old settlements in Eurasia, and was listed by the UNESCO World Heritage Site in 2000. These caves were...
Article
Full-text available
The Arlanzón river is located in the NE Duero Depression (Castilian Plateau of northern Spain), where it drains the anticlinal ridge of the Sierra de Atapuerca, where a rich record of karstic and open air Palaeolithic archaeological sites are located, spanning the last 1.22 Ma. The geomorphological sequence of this valley is composedof fourteen flu...
Poster
Full-text available
En los últimos 15 años, las tecnologías 3D se han convertido en grandes herramientas para la documentación y preservación de registros arqueológicos (Doneus et al., 2005), ya sea para fines divulgativos, didácticos o científicos. El análisis tradicional in-situ de lugares de interés cultural, se ha visto modificado por la posibilidad de obtener rep...
Conference Paper
El complejo kárstico multinivel de Ojo Guareña se encuentra localizado en la Cordillera Cantábrica, al norte de la provincia de Burgos. En su tercer nivel se hallan las Galerías de las Huellas, donde se han conservado de manera intacta múltiples rastros de huellas humanas pertenecientes al Paleolítico Superior (Ortega et al., 2013). Estas huellas s...
Presentation
Full-text available
First attempt of application of ESR dating on feldspars extracted from 3 samples, dated with TT-OSL and IRSL, all taken from different sedimentological facies within Unit G.III at Galería Cave, within the archaeological site of Atapuerca, Spain.
Article
Full-text available
Here we present a new site in the Sierra de Atapuerca (Burgos, Spain): Galería de las Estatuas (GE), which provides new information about Mousterian occupations in the Iberian Plateau. The GE was an ancient entrance to the cave system, which is currently closed and sealed by a stalagmitic crust, below which a detritic sedimentary sequence of more t...
Poster
Full-text available
The Galería de las Huellas site (Burgos, Spain) is located in the third level of the Ojo Guareña Multilevel karstic system, in two passages which floors preserve several tracks of Palaeolithic human footprints. They are preserved on unconsolidated and wet loam sediments, very sensitive to any physical approach to document and study their geometry a...
Article
Full-text available
The Sierra de Atapuerca is an anticlinal ridge of Mesozoic carbonate rocks on the NW edge of the Iberian Chain (Northern Spain, Burgos), surrounded by subhorizontal continental sediments of the NE Duero Cenozoic Basin under endorheic conditions. The shift to exorheic conditions in the Duero Basin lead to the onset of an episodic downcutting phase a...
Article
Full-text available
This work focusses on the Sierra de Atapuerca Thinchera karst system, in which Gran Dolina and Galería Complex sites are located. A total of eight ERT profiles were performed over an area that covers both sites, with the aim of identifying the dimensions and continuity of these passages. The interpretation of the 2D and 3D profiles has allowed dete...
Article
Full-text available
Gran Dolina is a cavity infill of the Sierra de Atapuerca, containing three important Early and Middle Pleistocene archaeo-paleontological layers, including hominid bones, fauna and lithic remains. Due to the relevance of this site to understand human evolution in Europe, it is essential to define in detail the sedimentary processes and environment...
Article
Carbonate stalagmites have become increasingly attractive to Quaternary paleoclimate research, as they can be accurately dated by radiometric methods and concurrently yield high-resolution multi-proxy records of past climate conditions. Reliable series however require the precise characterization of stalagmite internal micro-stratigraphy, a task to...
Poster
Full-text available
MINING AND QUARRYING. GEOLOGICAL CHARACTERISATION, KNAPPING PROCESSES AND DISTRIBUTION NETWORKS DURING PRE- AND PROTOHISTORIC TIMES. 7th INTERNATIONAL CONFERENCE OF THE UISPP COMMISSION ON FLINT MINING IN PRE- AND PROTOHISTORIC TIMES MONS AND SPIENNES 2016
Presentation
Full-text available
Numerous key findings at the Lower Paleolithic cave site of Gran Dolina, Sierra de Atapuerca, northern Spain, have led to major ad- vancements in our understanding of human evolution and occupation of Eurasia [1]. The Gran Dolina site has produced thousands of fossils and artifacts since 1995, when the first hominin remains were reported, and has b...
Conference Paper
Full-text available
The karst dolomite hill of Calvero de la Higuera (Pinilla del Valle, Comunidad de Madrid, Spain) is extraordinarily rich in sites that were occupied by hominids and carnivores. Signs abound that Homo neanderthalensis used the area’s caves and rockshelters as camps, and that these structures also provided dens for hyaenas (Crocuta crocuta) [1]. The...
Conference Paper
Full-text available
Fossil evidence of Neanderthals during MIS3 in central Spain is rather scarce. Until now, the few remains from Los Casares Cave, Jarama VI site and Los Torrejones Cave constituted the bony record for this species in this region for this period. Recently, two Neanderthal teeth were recovered in Buena Pinta cave, a site discovered in 2003 situated in...
Conference Paper
Cave sites with Mousterian occupations in the Iberian Peninsula are mainly limited to the Northern, Eastern and Southern mountain ranges. Thus, the information available for the interior part of the Iberian Peninsula is very limited. Since 2008, we are working on a new cave site in the Sierra de Atapuerca (Burgos, Spain): Galería de las Estatuas (G...
Presentation
Full-text available
El complejo minero prehistórico de sílex aflora al Sur de la Cuenca Vasco-Cantábrica, concretamente en terrenos del Terciario continental lacustre-palustre del Mioceno (Aquitaniense) del Sinclinal Surpirenaico de Miranda-Treviño. Aquí se localiza una unidad paisajística que denominamos Sierra de Araico - Montes de Cucho, situada entre los municipio...
Chapter
Full-text available
ERT (Electrical Resistivity Tomography) geophysical prospections were carried out around Kaite and Cueva Palomera in order to identify their detrital infilling morphologies. These two caves are part of the Ojo Guareña Karst and contain different archaeological remains dating from the Upper Paleolithic to the Iron Age. The models proposed show compl...
Article
Full-text available
Este trabajo se centra en el estudio geofísico de las cavidades de Gran Dolina y Galería del karst de la Sierra de Atapuerca. La realización de ocho perfiles de Tomografía de Resistivi-dad Eléctrica (ERT) y la interpretación de los perfiles en 2D y 3D han permitido determinar la extensión de sus galerías y la presencia de una antigua entrada col-ma...
Article
Full-text available
In the necessary task of obtaining high-resolution paleoclimate series from speleothems, the characterization of their internal microstratigraphy is a useful tool for: a) improving geochronology, and b) reaching a more complete knowledge of the speleothem formation and evolution through time and thus obtaining additional paleoenvironmental informat...
Chapter
We show the potential of paleomagnetism applied to sediments filling cave passages for chronology purposes, since the formation of caves cannot be directly dated. The Atapuerca karst system (N Spain) offers a suitable case scenario because it contains a multilevel karst system developed during the progressive incision of the Arlanzón River. This ka...
Article
Full-text available
This work focusses on the Sierra de Atapuerca Thinchera karst system, in which Gran Dolina and Galería Complex sites are located. A total of eight ERT profiles were performed over an area that covers both sites, with the aim of identifying the dimensions and continuity of these passages. The interpretation of the 2D and 3D profiles has allowed dete...
Article
Full-text available
The Sierra de Atapuerca is an anticlinal ridge of Mesozoic carbonate rocks on the NW edge of the Iberian Chain (Northern Spain, Burgos), surrounded by subhorizontal continental sediments of the NE Duero Cenozoic Basin under endorheic conditions. The shift to exorheic conditions in the Duero Basin lead to the onset of an episodic downcutting phase a...
Article
Full-text available
A stalagmite that grew during the Holocene (between 4.9 and 0.9 ka BP) in Kaite Cave (Ojo Guareña Karst Complex, Burgos, N Spain) has been analyzed by Laser-Induced Breakdown Spectroscopy (LIBS) with the aim of reconstructing secular variations in the hydrochemistry of the karst system, in turn related to changes in the environment outside the cave...
Chapter
Full-text available
Drip-water chemistry in karstic caves can vary at seasonal to interannual scales in response to climatic factors such as temperature, rainfall, and seasonality, which determine changes in the hydrological and hydrochemical processes of the percolating waters in their paths from the atmosphere to the cave. In this paper the characterization of stala...
Article
Full-text available
An absolute-dated stalagmite from Kaite Cave (Ojo Guaren ̃ a Karst Complex, N Spain) provides a nearly continuous, high-resolution record of a proxy of regional precipitation patterns through the 4.9–0.9 ka BP interval. This record is based on the Mg/Ca ratio of the calcite and its variation through the stalagmite stratigraphy, which is interpreted...
Article
Gran Dolina is a cavity infill of the Sierra de Atapuerca, containing three important Early and Middle Pleistocene archaeo-paleontological layers, including hominid bones, fauna and lithic remains. Due to the relevance of this site to understand human evolution in Europe, it is essential to define in detail the sedimentary processes and environment...
Article
Full-text available
El Complejo Kárstico de Ojo Guareña engloba a centenares de cavidades con una evidente relación litológica, tectónica e hidrogeológica. La red principal, constituida por el enlace de 14 de ellas, tiene más de 110km de conductos topografiados por el Grupo Espeleológico Edelweiss. Muchas de sus entradas y galerías conservan evidencias de su utilizaci...
Article
Full-text available
En otoño de 1962, diversos miembros del Grupo Espeleológico Edelweiss dirigidos por José Luis Uribarri descubrieron los primeros fósiles del Yacimiento Trinchera (hoy individualizados como Trinchera Galería y Trinchera Dolina), dando parte al Director del Museo de Burgos, Basilio Osaba. Regresaron con él y varios periodistas y fotógrafos el 15 de a...
Data
The Sierra de Atapuerca sites located in the Trinchera area are ancient caves filled with sediments that were sectioned by a XIXth Century railroad trench. Sima del Elefante, Galería Complex and Gran Dolina sites have been studied for decades providing outstanding Early and Middle Pleistocene archaeo-palaeoanthropological remains (Bermúdez de Castr...
Conference Paper
Full-text available
Speleothems have been broadly studied as archives of the Quaternary climate. One of the proxies preserved in stalagmites corresponds to the stratigraphic patterns of carbonate microfabrics. These fabrics are strongly dependent of a wide range of factors that include environmental parameters from outside the caves (such as rainfall, vegetation type,...
Article
Full-text available
The archaeological karstic infill site of Galería Complex, located within the Atapuerca system (Spain), has produced a large faunal and archaeological record (Homo sp. aff. heidelbergensis fossils and Mode II lithic artefacts) belonging to the Middle Pleistocene. Extended-range luminescence dating techniques, namely post-infrared infrared stimulate...
Conference Paper
Full-text available
The monetite layers very often present some organic features that range from varying amounts of amorphous organic matter to different kinds of microorganisms. The phosphate replaces in many cases the organic structures, such as spores or extracellular polimeric substances. This is a contribution to Projects CGL2010-21499 and UCM-CM-910198, and to t...
Conference Paper
Full-text available
A rock magnetic study has been carried out on a sedimentary sequence in the Galería cave in the Sierra de Atapuerca karst system, which is located in the Duero Basin (northern Spain). This cave belongs to the world-famous archaeological site of Atapuerca which contains hominin remains of Pleistocene age. In the present study, four (G.I to G.IV) fr...
Conference Paper
Full-text available
The Sierra de Atapuerca is an anticlinal ridge of Mesozoic carbonate rocks on the NW edge of the Iberian Chain (Northern Spain, Burgos), surrounded by subhorizontal continental sediments of the NE Duero Cenozoic Basin under endorheic conditions. The shift to exorheic conditions in the Duero Basin lead to the onset of an episodic downcutting phase a...