Article
Geography, Physical
Helen E. Dulfer, Martin Margold, Christopher M. Darvill, Arjen P. Stroeven
Summary: The study investigates the dynamics of the Cordilleran Ice Sheet (CIS) in northern British Columbia, Canada during the Last Glacial Maximum (LGM) and its subsequent retreat. By analyzing glacial landforms, the research identifies three stages of ice flow and reveals complex changes in ice dynamics over time. The study also provides insights into the post-LGM ice retreat and the re-growth of independent mountain glaciers in the Late Glacial period.
QUATERNARY SCIENCE REVIEWS
(2022)
Article
Geography, Physical
Maria Lanczont, Przemyslaw Mroczek, Maryna Komar, Stanislaw Fedorowicz, Barbara Woronko, Jerzy Nawrocki, Zbigniew Frankowski, Karol Standzikowski
Summary: This paper responds to the comment from Bakhmutov and Hlavatskyi on their study. The authors clarify that they only analyzed the formation conditions of the upper part of the Roxolany sequence and consider it to be from the Late Pleistocene. Their research is based on multi-proxy results and they emphasize the need to outline the stratigraphic background before discussing the main research topic. Bakhmutov and Hlavatskyi argue that the authors did not take into account their latest magnetic stratigraphy data.
QUATERNARY SCIENCE REVIEWS
(2022)
Article
Geography, Physical
Manja Zebre, M. Akif Sarikaya, Uros Stepisnik, Renato R. Colucci, Cengiz Yildirim, Attila Ciner, Adem Candas, Igor Vlahovic, Bruno Tomljenovic, Bojan Matos, Klaus M. Wilcken
Summary: This study reconstructs the extent and timing of past glaciations in the northern Velebit Mt. in Croatia using geomorphological and sedimentological evidence, as well as cosmogenic 36Cl surface exposure dating. The empirical reconstruction suggests that the glaciers likely reached their maximum extent before the global Last Glacial Maximum, correlating with Marine Isotope Stage 5-4. The best-fit simulation indicates a cooling of 8 degrees C and a 10% reduction in precipitation for glaciers of this size to form, although uniform changes in climatological parameters do not completely match all ice margins mapped.
Article
Geography, Physical
Anna O. Volvakh, Nikolay E. Volvakh, Ivan Yu Ovchinnikov, Lyubov G. Smolyaninova, Redzhep N. Kurbanov
Summary: This study examines the loess records of the Late Pleistocene in Western Siberia, analyzing different sections to understand the geomorphological structure and climate changes. The results show that aeolian processes were the main factor in the accumulation of loess in these sections, with some influence from cryogenic weathering. The study also identifies periods of short-term warming and long-term aridization during the Late Glacial period. Additionally, evidence of local aeolian processes and dune formation was observed in certain sections.
QUATERNARY INTERNATIONAL
(2022)
Article
Geography, Physical
Malgorzata Frydrych
Summary: This study presents the results of morphometric analysis of approximately 300 eskers in Poland, to the south of the Last Glacial Maximum, indicating specific morphological characteristics and distribution influenced by various factors that contributed to their formation.
Article
Geosciences, Multidisciplinary
P. G. Panin, K. G. Filippova, A. Bukhonov, N. Karpukhina, P. Kalinin, M. Ruchkin
Summary: The study of the loess-paleosol sequence in the center of the East European Plain has a long history, with a focus on the high-resolution analysis of the LPS at the Likhvin stratotype section. Through detailed analysis, the study reveals the history of paleosol formation from the Middle Pleistocene to the present, identifying distinct characteristics of paleosols from different periods. The findings suggest similarities between ancient paleosols and modern soils, as well as potential reclassification of certain paleosols to different stages in the Pleistocene.
Article
Soil Science
Pavel Panin, Pavel Kalinin, Ksenia Filippova, Nikita Sychev, Aleksandr Bukhonov
Summary: This article discusses the changes in landscape and climatic conditions from the Middle Pleistocene to the present based on the study of Loess-paleosol sequences (LPSs) in the Beglitsa-2017 section. New data on soil cover change in the Late and Middle Pleistocene in the North-Eastern Azov region were obtained through multi-proxy analysis and high-resolution sampling. The results reveal the polygenetic origin of the Salyn interglacial paleosol (MIS 5e) profile and the shifting of soil types during its formation. The study also highlights the influence of cryo-arid conditions during the MIS 3 period and the gleying processes in the Middle Pleistocene paleosols.
Article
Multidisciplinary Sciences
Cunde Xiao, Zhiheng Du, Mike J. Handley, Paul A. Mayewski, Junji Cao, Simon Schuepbach, Tong Zhang, Jean-Robert Petit, Chuanjin Li, Yeongcheol Han, Yuefang Li, Jiawen Ren
Summary: This study on the Fe records in the North Greenland ice core over the past 110 kyr BP reveals that changes in inland climate can affect iron sources in the ocean, consistent with Chinese loess records, while global dust input variations are influenced by Earth's orbital cycles and solar radiation.
NATIONAL SCIENCE REVIEW
(2021)
Article
Geosciences, Multidisciplinary
Daniel Tentori, Alessandro Amorosi, Salvatore Milli, Kathleen M. Marsaglia
Summary: This study examines the downstream trends in sediment composition within the modern Po River system and defines provenance changes within a selected sector of the Upper Pleistocene to Holocene coastal plain. It reveals the effects of fluvial-marine interaction during the Holocene evolution of the Po coastal system, providing insights into the evolution of mixed-delta types and Quaternary successions showing alternating river-flood and wave-dominated deposits.
Article
Geosciences, Multidisciplinary
Peter D. Strand, Aaron E. Putnam, Oyungerel Sambuu, David E. Putnam, George H. Denton, Joerg M. Schaefer, Mariah J. Radue, Ariunsanaa Dorj, Pagamsuren Amarsaikhan, Jessica Stevens, Daniel G. Cole
Summary: The study examines the glaciation period in Central Asia, particularly the Mongolian Altai region, and finds that the glaciers reached their maximum phases around 35,440 years ago. Deglaciation began as early as 18,810 years ago and was mostly completed by 16,040 years ago. This research suggests that an additional climatic factor may have played a role in the rapid deglaciation around 18,800-16,000 years ago.
PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY
(2022)
Article
Geology
N. O. E. L. P. JAMES, Y. V. O. N. N. E. BONE
Summary: The Coorong Coastal Plain in South Australia consists of uplifted Pleistocene beach-dune formations, with older corridors poorly understood and more recent Holocene lakes extensively studied. The study reveals different chemical compositions of geological formations at different ages as time progresses.
Article
Geography, Physical
Maria Lanczont, Przemyslaw Mroczek, Maryna Komar, Stanislaw Fedorowicz, Barbara Woronko, Jerzy Nawrocki, Zbigniew Frankowski, Karol Standzikowski
Summary: This study focuses on the loess-palaeosol sequence at Roxolany in Ukraine, which is one of the longest and most complete records of Quaternary climate change in the region. The dating results for the loess contradicted the stratigraphy determined by geological methods, indicating local intensification of aeolian and depositional processes. The findings suggest that various factors, including regional atmospheric circulation, the location of the aeolian source material, the recession of the Black Sea, and changes in relief conditions, may have contributed to the unique characteristics of the Roxolany sequence.
QUATERNARY SCIENCE REVIEWS
(2022)
Article
Geography, Physical
Sarah Kamleitner, Susan Ivy-Ochs, Giovanni Monegato, Franco Gianotti, Naki Akcar, Christof Vockenhuber, Marcus Christl, Hans-Arno Synal
Summary: We present a new glacier chronology of the Ticino-Toce glacier in the Southern Alps, reconstructing the timing and extent of its Last Glacial Maximum advance with detailed landform relationships and surface exposure dating. The study reveals that the glacier remained relatively stable with only minor oscillations over a period of approximately 5000 years, and the Verbano piedmont lobe was larger than previously thought. Additionally, the research suggests synchronized glacier advances across the Western Alps, except for the southwestern massifs.
QUATERNARY SCIENCE REVIEWS
(2022)
Article
Environmental Sciences
Qiansuo Wang, Yougui Song, Linqiong Duan, Jinchan Li
Summary: Chinese loess on the Loess Plateau provides valuable records of paleoclimate changes. By analyzing the grain-size components of aeolian sediments, we reconstructed the history of the East Asian winter monsoon (EAWM). Our study found that two major grain-size components (fine and coarse) varied among different loess sections due to factors such as material source distance and post-depositional pedogenesis. Comparisons between sensitive grain-size components and EAWM patterns indicated that the coarse grain-size components can serve as a proxy indicator for the EAWM on the Loess Plateau.
Article
Geography, Physical
Jose N. Perez-Asensio, Kazuyo Tachikawa, Laurence Vidal, Thibault de Garidel-Thoron, Corinne Sonzogni, Abel Guihou, Pierre Deschamps, Stephan J. Jorry, Min-Te Chen
Summary: This study reconstructs the spatial and temporal evolution of glacial carbon-rich deep waters in the southwest Indian Ocean over the past 630 kyr. The analysis of sediment samples reveals that orbital forcing, restricted air-sea exchange, and enhanced ocean stratification fostered higher carbon storage during periods of relatively lower eccentricity and obliquity.
GLOBAL AND PLANETARY CHANGE
(2023)
Article
Biology
Paula Lopes Copetti, German Mariano Gasparini, Jamil Correa Pereira, Emmanuelle Fontoura, Renato Pereira Lopes, Leonardo Kerber
Summary: This article provides an update on the taxonomic arrangement and anatomical description of a well-preserved skull belonging to the South American tayassuid Brasiliochoerus stenocephalus from southern Brazil. Based on the features observed, the presence of this taxon suggests dry and relatively open environments during the Late Pleistocene in the study area.
HISTORICAL BIOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Eduardo G. Barboza, Sergio R. Dillenburg, Renato P. Lopes, Maria Luiza C. C. Rosa, Felipe Caron, Vitor Abreu, Rogerio P. Manzolli, Jose Carlos R. Nunes, Jair Weschenfelder, Luiz J. Tomazelli
Summary: This paper discusses the evolution of a sector of the southern coastal plain of the Pelotas Basin in southern Brazil, focusing on the impact of sea-level changes between the last Pleistocene and the Holocene. Through the study of a fluvial system developed during the Last Glacial Maximum, the research reveals the characteristics of a paleochannel and the transitions of sedimentary environments from fluvial to coastal barrier. The study region acted as a sediment by-pass zone connecting the inner parts of the adjacent coastal plain with the inner continental shelf, providing insights into the geological record of the Last Glacial Maximum in a coastal plain setting.
Article
Geosciences, Multidisciplinary
R. P. Bourman, C. Murray-Wallace, C. Wilson, L. Mosley, J. Tibby, D. D. Ryan, E. D. De Carli, A. Tulley, A. P. Belperio, D. Haynes, A. Roberts, C. Westell, E. J. Barnett, S. Dillenburg, L. B. Beheregaray, P. A. Hesp
Summary: Based on various sedimentary evidence, we have demonstrated that the Lower River Murray has been a freshwater-dominated system for the past 11.7 thousand years, contradicting recent hydrodynamic modeling conclusions. These conclusions have influenced proposals for removing the barrages near the Murray Mouth, while we argue that maintaining these barrages aligns with the "original natural condition" of the lakes.
AUSTRALIAN JOURNAL OF EARTH SCIENCES
(2022)
Article
Geosciences, Multidisciplinary
Renato Pereira Lopes, Matias do Nascimento Ritter, Eduardo Guimaraes Barboza, Maria Luiza Correa da Camara Rosa, Sergio Rebello Dillenburg, Felipe Caron
Summary: The study examines the past and present distribution of Anomalocardia flexuosa in southern Brazil, correlating it with the Holocene geological history of the area. The post glacial marine transgression created a corridor for the southward dispersion of A. flexuosa, but factors such as cooling, sea-level fall, and fluvial inputs eventually led to the regional extinction of the species around 4,000 years ago. The fossils indicate that the latitudinal distribution of A. flexuosa and other tropical mollusks cyclically shifted in response to glacial-interglacial sea-level and temperature oscillations along the southwestern Atlantic.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2022)
Article
Geology
Monique Aparecida Marchese Rizzi, Sergio Rebello Dillenburg, Lucy Takehara, Tiago Jonatan Girelli, Cassia Fatima Wust, Cristiano de Carvalho Lana, Farid Chemale Junior
Summary: Through detrital zircon U-Pb-Hf analyses, it was found that in addition to the Precambrian South American cratons, the Andean orogeny is also an important source for Ti-Zr-bearing placer formation on the passive margin of southern Brazil. Distal sediments are also derived from the La Plata River system and Argentina rivers.
SEDIMENTARY GEOLOGY
(2022)
Article
Geography, Physical
Rodolfo Jose Angulo, Maria Cristina de Souza, Paulo Fonseca Cesar Giannini, Sergio Rebello Dillenburg, Eduardo G. Barboza, Maria Luiza Correa da Camara Rosa, Patrick A. Hesp, Luiz Carlos Ruiz Pessenda
Summary: The height difference between paleo-vermetids and present homologous bioconstructions is the best indicator of Mid- to Late-Holocene paleo-sea levels on the Brazilian coast. The precision of this indicator varies depending on local conditions, and the use of other bioconstructions can add uncertainties to sea-level reconstructions. By studying a specific location on the Southeast Brazilian coast, the authors were able to improve the accuracy of paleo-sea level reconstructions by using a specific species as a reference level.
QUATERNARY SCIENCE REVIEWS
(2022)
Article
Biology
Renato Pereira Lopes, Jamil Correa Pereira, Alcides Nobrega Sial, Sergio Rebello Dillenburg
Summary: Palaeoecological studies on South American mastodons using stable isotopes reveal the variable diets and long-term diet shifts of these species. This study suggests that mastodons were capable of changing their diets within shorter time periods, possibly due to ontogenetic development, migration, or environmental stresses.
HISTORICAL BIOLOGY
(2023)
Article
Geography, Physical
Maiara Rech da Silveira, Sergio Rebello Dillenburg, Eduardo Guimaraes Barboza
Summary: This paper presents a characterization of the Siriu coastal barrier (littoral of Santa Catarina state) and its formation process. It also studies the morphodynamic behavior of the beach-dune system of the barrier and determines the factors that controlled the formation of its transgressive dune field. The results show that the barrier was formed by the progradation of a sandy spit and the formation of a transgressive dune field. The development of the dune field is influenced by factors such as wave energy, coastline orientation, littoral drift, beach state, and wind direction and speed.
REVISTA BRASILEIRA DE GEOMORFOLOGIA
(2022)
Article
Geography, Physical
Renato Pereira Lopes, Carolina Saldanha Scherer, Jamil Correa Pereira, Sergio Rebello Dillenburg
Summary: This study reconstructs the paleoenvironment and paleoclimate of the Brazilian Pampa using stable isotopes (δC-13, δO-18) in the tooth enamel of Pleistocene camelids. The results show that the camelids mainly fed on C3 plants, with some inclusion of C4 or CAM plants in the diet of Lama guanicoe. The aridity indexes and δO-18 values suggest arid/semi-arid conditions and O-18-enriched water ingestion. The findings indicate a climate-driven northeastward shift of the Arid Diagonal of South America which may have contributed to the local extinction of Pleistocene megafauna.
JOURNAL OF QUATERNARY SCIENCE
(2023)
Article
Paleontology
Cristianini Trescastro Bergue, Renato Pereira Lopes, Felipe Caron, Matias do Nascimento Ritter, Fabio Lameiro Rodrigues
Summary: A micropaleontological analysis of beachrock samples from the northern sector of the Rio Grande do Sul Coastal Plain in southern Brazil revealed a diverse and well-preserved ostracod assemblage. In addition to ostracods, other microfossils such as foraminifers, echinoderm spines, and fish remains were also found. The taxonomic composition of the ostracods suggests that the beachrocks represent environmentally condensed assemblages. This preliminary study highlights the importance and potential of micropaleontology in understanding the processes involved in beachrock formation.
REVISTA BRASILEIRA DE PALEONTOLOGIA
(2022)
Editorial Material
Geosciences, Multidisciplinary
R. P. Bourman, C. V. Murray-Wallace, C. Wilson, L. Mosley, J. Tibby, D. D. Ryan, E. D. De Carli, A. Tulley, A. P. Belperio, D. Haynes, A. Roberts, C. Westell, E. J. Barnett, S. Dillenburg, L. B. Beheregaray, P. A. Hesp
AUSTRALIAN JOURNAL OF EARTH SCIENCES
(2023)
Article
Geography, Physical
Debora Sayuri Zanchi Watanabe, Eduardo Guimaraes Barboza, Maria Luiza Correa da Camara Rosa, Sergio Rebello Dillenburg, Felipe Caron, Matias do Nascimento Ritter, Volney Junior Borges de Bitencourt, Rogerio Portantiolo Manzolli
Summary: This study investigates the extension and characteristics of the Holocene coastal barrier in the northern coast of Rio Grande do Sul, revealing different stacking patterns and contributing to the understanding of long-term barrier behavior and coastal management.
REVISTA BRASILEIRA DE GEOMORFOLOGIA
(2023)
