Article
Geography, Physical
Johan Kleman, Martina Hattestrand, Ingmar Borgstrom, Derek Fabel, Frank Preusser
Summary: Studies have challenged previous assumptions of continuous ice cover in the core area of the Fennoscandian Ice Sheet during the Pleistocene, with evidence suggesting ice-free conditions in central Scandinavia from around 55 ka to about 35 ka.
QUATERNARY SCIENCE REVIEWS
(2021)
Article
Geosciences, Multidisciplinary
C. M. Darvill, B. Menounos, B. M. Goehring, A. J. Lesnek
Summary: This study reports 20 Be-10 exposure ages from glacial erratics and bedrock on the west coast of British Columbia, Canada, contributing to the existing chronologies of Cordilleran Ice Sheet retreat along approximately 600 km of coastal North America. The data show that the western ice limit reached the present coast by 18-16 ka then slowed its retreat for around 4,000 years until 14-13 ka. The initial retreat is attributed to destabilization and grounding line retreat caused by rising sea level and/or ocean warming in the northern Pacific. Despite increasing temperatures, the subsequent stability of the ice sheet at the present coastal margin is likely due to the transition from marine to terrestrial margins.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Engineering, Geological
Yulong Cui, Jianhui Deng, Wanyu Hu, Chong Xu, Hua Ge, Jinbing Wei, Jun Zheng
Summary: The study determined the age of the Mahu giant landslide, revealing that it was formed by two major events with error weighted mean ages. This provides a basis for understanding the causes of the landslide and suggests that regional fault activity and earthquake risk can be analyzed from the perspective of landslide science.
ENGINEERING GEOLOGY
(2021)
Article
Geography, Physical
Paul A. Carling, John D. Jansen, Teng Su, Jane Lund Andersen, Mads Faurschou Knudsen
Summary: Rock slope failures in the Lake District, UK, are related to deglaciation processes after the Last Glacial Maximum, but the causes and timing of these failures are still unclear. A study on a cirque headwall failure revealed that the slope was unstable and would have failed catastrophically without the support of glacial ice. As the ice thinned, the translated wedge of rock slowly descended, gradually exposing the failure plane. Cosmogenic 10Be surface exposure ages suggest the presence of small buttressing ice during regional deglaciation and a post-failure mass-wasting event.
EARTH SURFACE DYNAMICS
(2023)
Article
Geography, Physical
Yu Liu, Lu Sun, Yan Ma, Sheng Xu, Ping Liu, Shijie Wang, Weijun Luo
Summary: This study presents radiometric dating of three late Cenozoic sedimentary units in the Linxia Basin using cosmogenic 26Al/10Be and 10Be/21Ne burial methods. The results provide accurate ages for these units and correct previous misinterpretations, contributing to a better understanding of the Himalayan movement and mammalian evolution in the Linxia Basin.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2023)
Article
Geography, Physical
Shan Ye, Joshua K. Cuzzone, Shaun A. Marcott, Joseph M. Licciardi, Dylan J. Ward, Jakob Heyman, Daven P. Quinn
Summary: By analyzing 1341 Be-10 ages from alpine moraines and glacially eroded valleys in western North America, we found significant differences in snow shielding across geography and time. Our study demonstrated that modern snow conditions cannot account for varying snow patterns since the Last Glacial Maximum, and the snow-based exposure age corrections differed from those calculated by our time-varying model by up to 17%. Additionally, the Be-10 ages calculated under different wind-sweeping scenarios can differ by an average of 7.6% for LGM aged samples.
QUATERNARY GEOCHRONOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Tancrede P. M. Leger, Andrew S. Hein, Daniel Goldberg, Irene Schimmelpfennig, Maximillian Van Wyk S. de Vries, Robert G. Bingham
Summary: The study reconstructs the behaviors and surface mass balance of two mountain glaciers in northeastern Patagonia during the late-Last Glacial Maximum through geomorphological mapping, terrestrial cosmogenic nuclide exposure dating, and glacial numerical modelling. Results suggest that regional mean annual temperatures were lower by 1.9 to 2.8 degrees Celsius around 18,000 years ago, while precipitation was significantly higher, supporting the proposed equatorward migration of the precipitation-bearing Southern Westerly Wind belt towards the end of the Last Glacial Maximum.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Geosciences, Multidisciplinary
Jesper Norgaard, Martin Margold, John D. Jansen, Redzhep Kurbanov, Izabela Szuman, Jane Lund Andersen, Jesper Olsen, Mads Faurschou Knudsen
Summary: This study presents the first dates from the central part of Northeast Siberia, providing age constraints on glaciations in the region. The results indicate limited Late Pleistocene glaciations to the highlands, suggesting the absence of a large, coalescent ice sheet in Northeast Siberia during the Last Glacial Maximum or Marine Isotope Stage 6.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Geography, Physical
Qi Su, Xianyan Wang, Daoyang Yuan, Hong Xie, Hongxuan Li, Xilei Huang
Summary: The geomorphic evolution of the Yellow River, especially its upper reach, provides important information on tectonic activity and climatic change in the northeastern Tibetan Plateau. This study focuses on the Gonghe Basin and determines the abandonment ages of two geomorphic surfaces. The results indicate that the abandonment occurred in the late Early Pleistocene period and was influenced by regional fault activities and global climate fluctuations.
Article
Engineering, Geological
Jan Lenart, Martin Kasing, Tomas Panek, Regis Braucher, Frantisek Kuda
Summary: This research investigates the slow-moving rockslide phenomenon in the Thaya River canyon, Central Europe. By combining geomorphological research with geological structure analysis and terrestrial cosmogenic nuclide dating, it is found that the rockslide developed gradually over time and left long-lasting topographic features.
Article
Engineering, Geological
Jan S. Ronning, Martina Bohme, Ola Fredin, Louise Hansen, Reginald L. Hermanns, Frode Ofstad, Ivanna M. Penna, Arne Solli, Jan Host
Summary: The radon problem in Kinsarvik, Ullensvang municipality in Western Norway is one of the most severe in the world, with average annual indoor radon concentrations of 4340 Bq/m3 in over 100 affected houses. New geological knowledge and LIDAR data suggest that the deposit in Kinsarvik may be a rock-avalanche deposit rather than an ice-marginal moraine, and the presence of uranium-bearing rocks contributes to the radon emissions.
ENGINEERING GEOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Maria-Paz Lira, Juan-Luis Garcia, Michael J. Bentley, Stewart S. R. Jamieson, Christopher M. Darvill, Andrew S. Hein, Hans Fernandez, Angel Rodes, Derek Fabel, Rachel K. Smedley, Steven A. Binnie
Summary: This study presents geomorphological and geochronological reconstructions of the glacial and deglacial landforms in the southernmost part of Patagonia during the last glacial period. Through dating the moraines and paleo lakes, the study reveals the asynchrony of ice advances and different patterns of ice retreat between neighboring lobes, which may be attributed to the interaction between topography and precipitation from the southern westerly wind belt.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geography, Physical
Matt G. Lotter, Kathleen Kuman, Darryl E. Granger
Summary: Penhill Farm is an Acheulean archaeological site in South Africa, where a stone tool assemblage dating back to approximately 1.1 Ma was found. The use of cosmogenic 26Al and 10Be revealed a two-stage depositional history, with artifacts from ca. 1.1 Ma incorporated into a debris flow dating to ca. 0.6 Ma. This discovery helps to understand the technological progression and chronology of the Stone Age in South Africa.
QUATERNARY GEOCHRONOLOGY
(2023)
Article
Geography, Physical
Sarah Kamleitner, Susan Ivy-Ochs, Lucia Manatschal, Naki Akcar, Marcus Christl, Christof Vockenhuber, Irka Hajdas, Hans-Arno Synal
Summary: This study evaluates glacial landforms preserved within the former LGM Rhine glacier and the eastern lobes of the LGM Reuss glacier system to understand LGM glacier dynamics. Through geomorphological mapping and new dating techniques, it is determined that the Rhine and Reuss glaciers reached their LGM maximum positions around 26-22 ka and 25/24 +/- 2 ka respectively. The glaciers showed subsequent oscillations, with late LGM readvances occurring after 20.6 +/- 1.7 ka and 20.8 +/- 1.3 ka for the Rhine and Reuss glaciers. The results provide valuable insights into the glacial history of the Alpine forelands.
Article
Geosciences, Multidisciplinary
Christopher T. Halsted, Paul R. Bierman, Greg Balco
Summary: The study assesses the variations in the in situ cosmogenic Al-26/Be-10 production ratio expected from nuclear physics, finding a negative correlation between the Al-26/Be-10 production ratio and elevation, as well as an increase in the production ratio with increasing latitude. The findings suggest that using production rate scaling can help minimize biases in two-isotope studies.
Review
Geosciences, Multidisciplinary
Bethan J. Davies, Christopher M. Darvill, Harold Lovell, Jacob M. Bendle, Julian A. Dowdeswell, Derek Fabel, Juan-Luis Garcia, Alessa Geiger, Neil F. Glasser, Delia M. Gheorghiu, Stephan Harrison, Andrew S. Hein, Michael R. Kaplan, Julian R. Martin, Monika Mendelova, Adrian Palmer, Mauri Pelto, Angel Rodes, Esteban A. Sagredo, Rachel K. Smedley, John L. Smellie, Varyl R. Thorndycraft
EARTH-SCIENCE REVIEWS
(2020)
Article
Soil Science
Daniel Evans, Angel Rodes, Andrew Tye
Summary: Improving our understanding of soil formation is important for informing land management decisions. Cosmogenic radionuclide analysis helps constrain the rates of soil formation, but not accounting for variations in soil bulk density could lead to under- or overestimates. The new model CoSOILcal recalculates soil formation rates, showing significant differences when considering soil bulk density profiles, especially in thick soils overlying bedrock.
EUROPEAN JOURNAL OF SOIL SCIENCE
(2021)
Article
Geosciences, Multidisciplinary
T. P. Lane, O. Paasche, B. Kvisvik, K. R. Adamson, A. Rodes, H. Patton, N. Gomez, D. Gheorghiu, J. Bakke, A. Hubbard
GEOPHYSICAL RESEARCH LETTERS
(2020)
Article
Geography, Physical
Laura Rodriguez-Rodriguez, Loreto Anton, Angel Rodes, Raimon Pallas, Daniel Garcia-Castellanos, Ivone Jimenez-Munt, Lucia Struth, Laetitia Leanni, Georges Aumaitre, Didier Bourles, Karim Keddadouche
GLOBAL AND PLANETARY CHANGE
(2020)
Article
Geochemistry & Geophysics
Matt D. Tomkins, Jason M. Dortch, Philip D. Hughes, Jonny J. Huck, Raimon Pallas, Angel Rodes, James L. Allard, Andrew G. Stimson, Didier Bourles, Vincent Rinterknecht, Vincent Jomelli, Laura Rodriguez-Rodriguez, Ramon Copons, Iestyn D. Barr, Christopher M. Darvill, Thomas Bishop
Summary: This study quantitatively assessed the relative utility of moraine crest and moraine slope sampling, finding that the spatial distribution of good boulders is effectively random, and landform stability has a greater influence on exposure age distributions than individual boulder characteristics. Postdepositional stability is strongly influenced by sedimentology, with differences between landforms potentially more significant than differences at the intra-landform scale.
EARTH AND PLANETARY SCIENCE LETTERS
(2021)
Article
Geography, Physical
Yu Liu, Shijie Wang, Sheng Xu, Derek Fabel, Finlay M. Stuart, Angel Rodes, Xinbao Zhang, Weijun Luo
Summary: The Guizhou Plateau serves as a transition between the Tibetan Plateau and the Yangtze River Plain, likely formed during the India-Eurasia continental collision. The region's uplift history is unclear, but new data on cave and terrace sediments reveal long-term river incision rates, indicating that high elevation developed before the Late Pliocene.
QUATERNARY GEOCHRONOLOGY
(2022)
Article
Geography, Physical
Tancrede P. M. Leger, Andrew S. Hein, Robert G. Bingham, Angel Rodes, Derek Fabel, Rachel K. Smedley
Summary: The study reveals a detailed chronology of the Last Glacial Maximum expansions of the Rio Corcovado glacier in northern Patagonia, showing that the glacier's expansion was coeval with global Last Glacial Maximum and climatic signals, but out of phase with local summer insolation intensity. Additionally, it is observed that local ice sheet deglaciation occurred 1-2 ka earlier than other regions.
QUATERNARY SCIENCE REVIEWS
(2021)
Article
Geography, Physical
Julian R. V. Martin, Varyl R. Thorndycraft, Bethan J. Davies, Angel Rodes
Summary: Mid-latitude Patagonian glaciers in the Southern Hemisphere are sensitive to changes in the ocean-atmospheric climate system. This study investigates the retreat of glaciers during a period of rapid warming after the Antarctic Cold Reversal. The results show that the glaciers receded by 31.7 km at an average rate of 35.2 m/yr.
JOURNAL OF QUATERNARY SCIENCE
(2023)
Article
Geosciences, Multidisciplinary
Josephine Hornsey, Ann Rowan, Martin P. Kirkbride, Stephen J. Livingstone, Derek Fabel, Angel Rodes, Duncan J. Quincey, Bryn Hubbard, Vincent Jomelli
Summary: Observations of glacier behavior in the Everest region of Nepal revealed seven glacial stages in the Holocene period, which correlate with similar stages in the monsoon-influenced Himalaya region, demonstrating a coherent record of high elevation terrestrial palaeoclimate change that can be extracted from dynamic mountain landscapes.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2022)
Article
Geosciences, Multidisciplinary
Maria-Paz Lira, Juan-Luis Garcia, Michael J. Bentley, Stewart S. R. Jamieson, Christopher M. Darvill, Andrew S. Hein, Hans Fernandez, Angel Rodes, Derek Fabel, Rachel K. Smedley, Steven A. Binnie
Summary: This study presents geomorphological and geochronological reconstructions of the glacial and deglacial landforms in the southernmost part of Patagonia during the last glacial period. Through dating the moraines and paleo lakes, the study reveals the asynchrony of ice advances and different patterns of ice retreat between neighboring lobes, which may be attributed to the interaction between topography and precipitation from the southern westerly wind belt.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Tancrede P. M. Leger, Andrew S. Hein, Angel Rodes, Robert G. Bingham, Irene Schimmelpfennig, Derek Fabel, Pablo Tapia
Summary: This study aims to better understand the drivers of spatio-temporal variability in ice sheet evolution by establishing reliable chronologies of former outlet-glacier advances. It finds that the Southern Westerly Winds and the Antarctic Circumpolar Current have a significant influence on the Patagonian Ice Sheet, making it a powerful indicator of climate change. The study also reveals at least three pre-Last Glacial Cycle stadials in northern Patagonia, which are related to summer insolation intensity and colder winters.
CLIMATE OF THE PAST
(2023)
Article
Geosciences, Multidisciplinary
Angel Rodes
Summary: Cosmogenic nuclides are commonly used to track the landscape history of glaciated areas, especially in the extremely arid conditions of nunataks in continental polar regions. The NUNAtak Ice Thinning model (NUNAIT) is a tool that simulates the accumulation of cosmogenic isotopes on vertical profiles, fitting parameters from multi-isotope apparent ages to constrain the geological history of a nunatak.
Article
Geology
Juan-Luis Garcia, Christopher Luthgens, Rodrigo M. Vega, Angel Rodes, Andrew S. Hein, Steven A. Binnie
Summary: This study compiles a new glacier record on Chiloe Island in southern Chile, revealing distinct expansions and retreats of glaciers during different periods, reflecting a rapid response to climate change during ice ages. The data support the presence of large glaciers in Patagonia and New Zealand during the MIS 3, but contradict evidence of interstadial periods in other mid-latitude regions.
E&G QUATERNARY SCIENCE JOURNAL
(2021)
Article
Multidisciplinary Sciences
Angel Rodes, Daniel L. Evans
Article
Geography, Physical
Theodoros Karampaglidis, Alfonso Benito-Calvo, Angel Rodes, Regis Braucher, Alfredo Perez-Gonzalez, Josep Pares, Fin Stuart, Luigia Di Nicola, Didier Bourles
GLOBAL AND PLANETARY CHANGE
(2020)
