Article
Geography, Physical
Daisy Valera Fernandez, Elizabeth Solleiro Rebolledo, Sergey Sedov, Konstantin Pustovoitov
Summary: Pedogenic carbonates are important indicators of past climatic changes, and their formation is attributed to calcite accumulation in arid or semi-arid regions. This study analyzed pedogenic carbonates from three paleosol profiles in the Teotihuacan Valley, Basin of Mexico, revealing that the primary source of calcium and strontium for carbonate formation is rocks from the Transmexican Volcanic Belt, with minimal contribution from distant eolian inputs. The isotopic composition of carbonates suggests a mixture of C3 and C4 plants during the Pleistocene, transitioning to a higher proportion of C4 vegetation during the Holocene. These findings support previous research on the regional paleoenvironment during different time periods.
QUATERNARY INTERNATIONAL
(2022)
Article
Engineering, Geological
Jose Pina-Flores, Martin Cardenas-Soto, Alejandro Sarabia-Gonzalez, Antonio Garcia-Jerez, Cesar A. Sierra-Alvarez, Mario A. Saenz-Castillo, Francisco Luzon, Francisco J. Sanchez-Sesma
Summary: This study utilized ambient seismic noise to evaluate the mechanical properties of the Sun Pyramid in Teotihuacan, Mexico. The research revealed low-velocity anomalies in the structure's cover layer, likely related to the presence of support walls or counterforts, and identified a core susceptible to wall failures due to infiltrated water. These findings could be valuable for designing conservation strategies for this emblematic Mexican pre-Hispanic monument.
ENGINEERING GEOLOGY
(2021)
Article
Anthropology
Maria C. Codlin, Katerina Douka, Kristine K. Richter
Summary: Aquatic bird remains provide important evidence for prehispanic lake exploitation in highland Central Mexico. However, little attention has been given to the economic importance of ducks and other lacustrine birds. This study uses the ZooMS technique to identify avian fauna from Teotihuacan, revealing the diverse range of birds exploited by the residents of Tlajinga.
JOURNAL OF ARCHAEOLOGICAL SCIENCE
(2022)
Article
Anthropology
Domenico Miriello, Luis Barba Pingarron, Arturo Barba Pingarron, Donatella Barca, Andrea Bloise, Jesus Rafael Gonzalez Parra, Gino Mirocle Crisci, Raffaella De Luca, Genea Girimonte, Jose Luis Ruvalcaba-Sil, Alessandra Pecci
Summary: This paper discusses the issue of hydraulicity in Mesoamerican plasters, focusing on samples from the archaeological site of Teotihuacan. The study confirmed the presence of hydraulicity in the plasters and identified the role of tezontle in creating this characteristic, rather than the previously thought glass shards.
JOURNAL OF ARCHAEOLOGICAL SCIENCE
(2021)
Article
Geosciences, Multidisciplinary
Svetlana A. Sycheva, Nikolay K. Anisyutkin, Olga S. Khokhlova
Summary: The study of the stratified Lower Paleolithic site of Bairaki reveals that human ancestors were present in the south of the East European Plain over a million years ago and inhabited the site for over 500 thousand years. Bairaki is the only known multilayered site of this early age in Eastern Europe.
Article
Geography, Physical
Mauricius Nascimento Menezes, Patrick Fuhr Dal'Bo, Jon J. Smith, Leonardo Borghi, Michele Arena, Julia Favoreto, Herminio Ismael de Araujo-Junior
Summary: This study investigates the paleosols in Brazilian intracontinental basins and focuses on a hydromorphic paleosol profile in the Lower Cretaceous Itapecuru Formation. The research analyzes clay mineralogy and whole-rock geochemistry to infer pedogenic processes and reconstruct paleoclimate, paleohumidity, and paleovegetation. The results suggest a humid paleoclimate with wet tropical forests during the Cretaceous period.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)
Article
Multidisciplinary Sciences
Nawa Sugiyama, Saburo Sugiyama, Tanya Catignani, Adrian S. Z. Chase, Juan C. Fernandez-Diaz
Summary: Humans play a primary role in shaping landscapes, especially in the rapidly expanding artificial ground under urbanization. Past and present anthropogenic actions create a dynamic taskscape, as evidenced by the influence of Pre-Columbian actions on modern features at Teotihuacan. This study utilizes lidar mapping to assess continuity and changes in the landscape, aiding decision makers in managing, transforming, or preserving heritage landscapes.
Article
Soil Science
Carlos M. Romero, Xiying Hao, Paul Hazendonk, Timothy Schwinghamer, Martin Chantigny, Simon Fonteyne, Nele Verhulst
Summary: Managing croplands for increased storage of soil organic matter, such as through permanent raised beds with crop residues fully retained or burned, can lead to higher soil organic carbon content. However, the pathways of soil organic matter stabilization may vary between different management systems.
Article
Geosciences, Multidisciplinary
Jun LI, Xingyue Wen, Yuanyuan Pan, Chengmin Huang
Summary: The study of Jurassic paleosols in the Sichuan Basin suggests that the region experienced predominantly semiarid and arid cool/warm-temperate climatic conditions, with episodes of subhumid and humid climates occurring intermittently.
ACTA GEOLOGICA SINICA-ENGLISH EDITION
(2022)
Article
Soil Science
Daisy Valera-Fernandez, Elizabeth Solleiro-Rebolledo, Rafael Lopez-Martinez, Sergey Sedov, Sara Griset, Hector Cabadas-Baez
Summary: The Quaternary carbonatic deposits on Cozumel Island provide a record of terrestrial paleoenvironments that have been poorly explored. This study investigates the karstic features, paleosols, and layers of calcretes in the carbonatic deposits. The results show a cyclic pattern of sedimentary, karstic, and pedogenetic processes, and provide insights into the development and chronology of karstification and pedogenesis on the island.
Article
Geography, Physical
Karol Jewula, Wieslaw Trela, Anna Fijalkowska-Mader
Summary: By studying the Permo-Triassic continental succession in the SE part of the Central European Basin, major steps in paleoenvironmental evolution have been reconstructed, and the importance of extrinsic factors responsible for these changes has been assessed.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Agronomy
Ajab Singh, Ashok K. Srivastava
Summary: A unique rhizosphere negotiator has been discovered in central India, formed in Quaternary fluvio-lacustrine sediments and confined within Early Pleistocene paleosol horizons. These structures, representing diverse morphologies and formed around plant roots through soil and fungal interactions, have been categorized into four distinct morphotypes. The development of these structures is closely related to plant roots and microbial communities, with spaces filled by calcium carbonate leached out from surrounding soils in arid to semi-arid climates.
Article
Geosciences, Multidisciplinary
Jun Li, Cheng-Min Huang, Guo-Lin Yang, Yuan-Yuan Pan, Xing-Yue Wen
Summary: This research reveals the climate changes during the Middle Jurassic period, which included oscillations between semiarid-subhumid, arid-humid, and cool/warm-temperate climates on land. The fluctuations in climate were possibly linked to global geological events and regional tectonic uplift. The findings also suggest relatively low CO2 levels during this period, coinciding with the threshold for glacial initiation and explaining cool intervals in a warm Jurassic era.
JOURNAL OF PALAEOGEOGRAPHY-ENGLISH
(2022)
Article
Geochemistry & Geophysics
Wesley D. Stoner, Barry J. Shaulis
Summary: This study on diagenesis in the Basin of Mexico examined the chemical alteration of some of the earliest ceramics due to nearly 3000 years of burial, revealing changes in barium and other elements. Ceramics high in barium at the Altica site were consistently found, highlighting the importance of these findings for properly sourcing archaeological ceramics at this site.
Article
Plant Sciences
Beamlaku Alemayehu, Enyew Adgo, Tadele Amare
Summary: The study identifies nitrogen and phosphorus as the most yield-limiting nutrients for tef production. The application of NP fertilizers is more effective than those containing potassium, sulfur, zinc, and boron.
JOURNAL OF PLANT GROWTH REGULATION
(2023)