Article
Anthropology
Luca Sitzia, Ximena Power, Debora Zurro, Jean Paul Maalouf, Jose Carcamo, Kristopher Chandia, J. M. Alonso Vega, Cesar Borie, Constanza Roa, Claudia Silva, Diego Salazar, Sebastian Vivanco, Valentina Hernandez, Catalina Aliste, Sebastian Ibacache, Rodrigo Lorca
Summary: This study evaluates the effectiveness of Raman spectroscopy in discriminating seaweed and plant/wood charred remains in the archaeological record. The results suggest that this method combined with machine learning techniques is robust and can be used to identify seaweed as a fuel source. The study also reveals that seaweed was used in a specific funerary ritual in the southern Atacama Desert coast around 5000 cal BP and demonstrates the long-term development of seaweed pyrotechnology by the Atacama Desert coast people.
ARCHAEOLOGICAL AND ANTHROPOLOGICAL SCIENCES
(2023)
Article
Geosciences, Multidisciplinary
Camila Riera-Soto, Carolina Agueero, Osvaldo Gonzalez-Maurel, Mauricio Uribe, Andrew Menzies
Summary: This study examines archaeological ceramics from the San Pedro de Atacama oases in the Atacama Desert, using automated SEM mineralogy to fully characterise the ceramics. The results show that the ceramics are more complex than previously thought, with varying components and mineral abundance. The mineralogical information allows for the discussion of possible raw material sources.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geography, Physical
Carola Flores, Bernardo R. Broitman
Summary: From the southern coast of Peru to the central-north coast of Chile, there have been significant fluctuations in sea surface temperature and upwelling conditions during the Holocene. The research shows that the relationship between SST and isotopic values is complex, with different patterns observed at different stages of the Holocene. Additionally, modern oceanographic patterns suggest an intensification of coastal upwelling with warm water intrusion, impacting fisheries along the Northern Coast of Chile.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Humanities, Multidisciplinary
Marcela Sepulveda, Cecilia Lemp Urzua, Jose Carcamo-Vega, Edgar Casanova-Gonzalez, Sebastian Gutierrez, Miguel Angel Maynez-Rojas, Benjamin Ballester, Jose Luis Ruvalcaba-Sil
Summary: This study investigates the colors and dyes on archaeological textiles from the Atacama Desert, using non-invasive techniques to analyze samples from pre-Columbian cemeteries in the Tarapaca region. The research identifies the use of indigo, carminic acid, and alizarin in the production of textiles, providing insights into the textile technology and cultural traditions in this desertic region and comparing the results with neighboring regions for a broader understanding of dyeing textiles.
Article
Spectroscopy
Eva Vermeersch, Filip Kosek, Johan De Grave, Jan Jehlicka, Peter Vandenabeele, Anastasia Rousaki
Summary: Manganese oxides are widely studied due to their diverse applications in industry, such as steel production, catalysis, and toxin removal. They are also used as pigments in archaeological artifacts. However, identifying different types of manganese oxides using Raman spectroscopy is challenging due to their weak scattering and vulnerability to lasers. In this research, seven natural mineral samples were characterized using micro-Raman spectroscopy with two different laser wavelengths, resulting in well-defined Raman spectra for each manganese oxide phase.
JOURNAL OF RAMAN SPECTROSCOPY
(2023)
Article
Materials Science, Multidisciplinary
Luis Caceres, Alvaro Soliz, Felipe Galleguillos
Summary: The study investigates the local atmospheric mechanism that triggers corrosion on carbon steel in the Atacama Desert. It identifies that the formation of a water layer on the metal surface is the main cause of corrosion. The study also highlights the influence of meteorological and atmospheric conditions on the corrosion process. Modelling results indicate a deceleration process in corrosion depth.
Article
Chemistry, Multidisciplinary
Kang Hee Cho, Sunghak Park, Hongmin Seo, Seungwoo Choi, Moo Young Lee, Changwan Ko, Ki Tae Nam
Summary: This study identified water oxidation intermediates on the surface of Mn3O4 nanoparticles using in situ Raman spectroscopy at neutral pH, providing insight into the design of systems for observing reaction intermediates.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Energy & Fuels
Jonathan Correa-Puerta, Pablo Ferrada, Patricio Haberle, Daniel Diaz-Almeida, Asier Sanz, Oihana Zubillaga, Aitor Marzo, Carlos Portillo, Valeria del Campo
Summary: The study compared the effects of UV radiation on four encapsulants under laboratory aging conditions, and used Raman spectroscopy to evaluate the degradation. The results showed that UV aging caused a decrease in transmittance and a shift in wavelength, leading to a reduction in photogenerated current density of crystalline silicon photovoltaic modules.
Article
Geochemistry & Geophysics
Fernanda Gallegos-Poch, Benoit Viguier, Giovanni Menanno, Valentina Mandakovic, Gonzalo Yanez, Sergio Gutierrez, Catalina Lizarde, Jaime Vargas Araya, Camila Lopez-Contreras, Pablo Mendez-Quiros, Antonio Maldonado, Mauricio Uribe
Summary: This study integrated ground penetrating radar (GPR) and electromagnetic induction (EMI) techniques to investigate the Iluga archaeological area in the hyperarid Atacama Desert. The circular features in the area were found to result from extensive deforestation, possibly for charcoal production. The proposed methodology shows promise for archaeological and shallow geological studies in hyperarid and dry environments.
SURVEYS IN GEOPHYSICS
(2023)
Correction
Multidisciplinary Sciences
Marco Veneranda, Guillermo Lopez-Reyes, Jesus Saiz, Jose Antonio Manrique-Martinez, Aurelio Sanz-Arranz, Jesus Medina, Andoni Moral, Laura Seoane, Sergio Ibarmia, Fernando Rull
Summary: An amendment has been published for this paper, which can be accessed through a link at the top.
SCIENTIFIC REPORTS
(2021)
Article
Humanities, Multidisciplinary
Nathalie Boucherie, Witold Nowik, Nathalie Pingaud
Summary: Recent excavations at the Cahuachi site in Southern Peru have provided new insights into the wall painting tradition in the region. Analysis of the painting materials and techniques used during different phases revealed significant differences between phase III and phase IV.
Article
Chemistry, Analytical
Silvia Perez-Diez, Africa Pitarch Marti, Anastasia Giakoumaki, Nagore Prieto-Taboada, Silvia Fdez-Ortiz De Vallejuelo, Alberta Martellone, Bruno De Nigris, Massimo Osanna, Juan Manuel Madariaga, Maite Maguregui
Summary: This study investigates how Pompeian cinnabar-containing fresco paintings degrade in different environments, with a focus on the impact of hydrogen sulfide and sulfur dioxide emitted during the 79 AD eruption. It also points out that darkening on the cinnabar paintings may not solely be due to the transformation of the pigment itself, but also to the presence of manganese and iron oxide formation.
ANALYTICAL CHEMISTRY
(2021)
Article
Spectroscopy
Yanqing Xin, Haijun Cao, Changqing Liu, Jian Chen, Ping Liu, Yingbo Lu, Zongcheng Ling
Summary: This study focuses on systematic spectroscopic studies of seven pure Mn oxides synthesized in laboratory, using various analytical techniques to establish a diverse spectral library. The identification and characterization of Mn oxides in Martian breccia meteorites and rocks could benefit from this work.
JOURNAL OF RAMAN SPECTROSCOPY
(2022)
Article
Anthropology
Francisco Gallardo
Summary: This article discusses the importance of exotic goods in different human contexts, emphasizing the relationship between exchanges and donors and receivers, as well as their reciprocal interactions. An exploratory archaeological perspective allows researchers to study exchanges from various aspects, such as social character, value of goods, and circulation methods. The presence of exotic goods serves as an indicator of intercultural social relations, with their value expressed through consumption.
JOURNAL OF THE ROYAL ANTHROPOLOGICAL INSTITUTE
(2022)
Article
Environmental Sciences
Rafael N. Linan-Abanto, William Patrick Arnott, Guadalupe Paredes-Miranda, Omar Ramos-Perez, Dara Salcedo, Hugo Torres-Muro, Rosa M. Linan-Abanto, Giovanni Carabali
Summary: This study analyzed the temporal variations of black carbon in Tacna, Peru from November 2019 to September 2021. Ground measurements and NASA's MERRA-2 reanalysis data were used, revealing a significant discrepancy between the two techniques. PAX BC measurements were consistently higher than MERRA-2 BC values, and MERRA-2 did not capture urban pollution events or the BC weekend effect. The most frequent wind direction was from the southwest, and the main sources of contamination were located in the northeast and southeast directions.
Article
Anthropology
Enrique Cerrillo-Cuenca, Marcela Sepulveda
JOURNAL OF ARCHAEOLOGICAL SCIENCE
(2015)
Article
Anthropology
Andres Troncoso, Francisca Moya, Marcela Sepulveda, Jose J. Carcamo
ARCHAEOLOGICAL AND ANTHROPOLOGICAL SCIENCES
(2017)
Article
Instruments & Instrumentation
Samuel Flewett, Thibault Saintenoy, Marcela Sepulveda, Edward Fabian Mosso, Carolina Robles, Katherine Vega, Sebastian Gutierrez, Alvaro Romero, Lydia Finney, Evan Maxey, Stefan Vogt
APPLIED SPECTROSCOPY
(2016)
Article
Anthropology
Andrea Seelenfreund, Marcela Sepulveda, Fiona Petchey, Barbara Pena-Ahumada, Claudia Payacan, Sebastian Gutierrez, Jose Carcamo, Olga Kardailsky, Ximena Moncada, Ana Maria Rojas, Mauricio Moraga, Elizabeth Matisoo-Smith, Daniela Seelenfreund
JOURNAL OF ARCHAEOLOGICAL SCIENCE
(2016)
Article
Archaeology
Alice DeAraujo, Archana Vasanthakumar, Marcela Sepulveda, Vivien Standen, Bernardo Arriaza, Ralph Mitchell
JOURNAL OF CULTURAL HERITAGE
(2016)
Article
Multidisciplinary Sciences
Marcela Sepulveda, Denise Pozzi-Escot, Rommel Angeles Falcon, Nicolas Bermeo, Matthieu Lebon, Christophe Moulherat, Philippe Sarrazin, Philippe Walter
Article
Geography, Physical
Marcela Sepulveda
Summary: Through the physicochemical characterization studies, we gain a deeper understanding of rock art practices in southern South America, highlighting the need for a microarchaeological approach and emphasizing the materiality and particularities of rock art practices.
QUATERNARY INTERNATIONAL
(2021)
Article
Humanities, Multidisciplinary
Marcela Sepulveda, Cecilia Lemp Urzua, Jose Carcamo-Vega, Edgar Casanova-Gonzalez, Sebastian Gutierrez, Miguel Angel Maynez-Rojas, Benjamin Ballester, Jose Luis Ruvalcaba-Sil
Summary: This study investigates the colors and dyes on archaeological textiles from the Atacama Desert, using non-invasive techniques to analyze samples from pre-Columbian cemeteries in the Tarapaca region. The research identifies the use of indigo, carminic acid, and alizarin in the production of textiles, providing insights into the textile technology and cultural traditions in this desertic region and comparing the results with neighboring regions for a broader understanding of dyeing textiles.
Article
Anthropology
Francisco Gallardo, Gloria Cabello, Marcela Sepulveda, Benjamin Ballester, Danae Fiore, Alfredo Prieto
Summary: The research discovered rock art site on Tierra del Fuego Island similar to other sites in the southern archipelago and the Pali Aike volcanic field. This suggests that the Fuegian people had navigational technology and cooperative social interaction for survival.
LATIN AMERICAN ANTIQUITY
(2023)
Article
Anthropology
Marcela Sepulveda, Benjamin Ballester, Gloria Cabello, Sebastian Gutierrez, Philippe Walter
Summary: This study focuses on color and polychromy in the prehistory of the Atacama Desert. By analyzing objects from different funerary sites, the research reveals that there was a simultaneous use of visible information transfer and local production of mineral pigments in the late Atacama culture. Through the analysis of chemical composition and physical characteristics, the study also evaluates the social significance of mineral polychromy.
ARCHAEOLOGICAL AND ANTHROPOLOGICAL SCIENCES
(2023)
Review
Archaeology
Daniela Osorio, Jose M. Capriles, Paula C. Ugalde, Katherine A. Herrera, Marcela Sepulveda, Eugenia M. Gayo, Claudio Latorre, Donald Jackson, Ricardo De Pol-Holz, Calogero M. Santoro
JOURNAL OF FIELD ARCHAEOLOGY
(2017)
Article
Archaeology
Francisca Moya, Andres Troncoso, Marcela Sepulveda, Jose Carcamo, Sebastian Gutierrez
BOLETIN DEL MUSEO CHILENO DE ARTE PRECOLOMBINO
(2016)
Article
Anthropology
Daniela Osorio, Marcela Sepulveda, Camila Castillo, Matias Corvalan
INTERSECCIONES EN ANTROPOLOGIA
(2016)
Article
Archaeology
Marta Diaz-Zorita Bonilla, Dorothee G. Drucker, Pascale Richardin, Veronica Silva-Pinto, Marcela Sepulveda, Herve Bocherens
JOURNAL OF ARCHAEOLOGICAL SCIENCE-REPORTS
(2016)
Article
Anthropology
Daniela Valenzuela, Calogero M. Santoro, Jose M. Capriles, Maria Jose Quinteros, Ronny Peredo, Eugenia M. Gayo, Indira Montt, Marcela Sepulveda
JOURNAL OF ANTHROPOLOGICAL ARCHAEOLOGY
(2015)