Article
Geography, Physical
Lucy J. Wheeler, Kirsty E. H. Penkman, Hans Petter Sejrup
Summary: This study explores the potential of isolating an 'intra-crystalline' fraction of proteins to improve the reliability of AA geochronology for foraminifera, focusing on Neogloboquadrina pachyderma. Results show the presence of a bleach-resistant fraction of biomineral proteins and suggest that the intra-crystalline fraction may behave as a closed system, particularly beneficial for younger samples. Material-specific regression equations successfully convert values between different analytical methods, enabling integration of geochronologies developed using different approaches.
QUATERNARY GEOCHRONOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Kim M. Cohen, Victor Cartelle, Robert Barnett, Freek S. Busschers, Natasha L. M. Barlow
Summary: This paper summarizes a database of Last Interglacial sea-level data points in NW Europe, providing valuable information for glacial isostatic adjustment modeling and identifying the melting pattern of the Last Interglacial ice sheets.
EARTH SYSTEM SCIENCE DATA
(2022)
Article
Geography, Physical
Daniel R. Muhs, Lindsey T. Groves, Kathleen R. Simmons, R. Randall Schumann, Scott A. Minor
Summary: Studies of marine terraces and their fossils provide important information about sea level history, tectonic uplift rates, and paleozoogeography. The well-preserved marine terraces on Santa Rosa Island, California, show low uplift rates during the late Pleistocene. Fossil mixing on these terraces may be caused by glacial-interglacial cycles and variations in sea surface temperature during the early Pleistocene.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2023)
Article
Geography, Physical
Daniel R. Muhs, R. Randall Schumann, Lindsey T. Groves, Kathleen R. Simmons, Christopher R. Florian
Summary: Research on marine terraces on Santa Cruz Island suggests that sea levels during the last interglacial period may have been overestimated, leading to the need for revisions in GIA models.
Article
Oceanography
Peru Bilbao-Lasa, Arantza Aranburu, Irantzu Alvarez, Miren del Val, Hai Cheng, Martin Arriolabengoa, Eneko Iriarte
Summary: Quaternary sea level fluctuations have shaped coastal landscapes and left visible sea level indicators. This study analyzed and dated two new deposits along the Cantabrian margin, finding that they likely correlate to the Marine Isotope Stage (MIS) 5e. The data suggests that the region has undergone similar tectonic evolution with no significant uplift since at least MIS 5e.
CONTINENTAL SHELF RESEARCH
(2023)
Article
Geography, Physical
Stefania Milano, Eduard Pop, Wim Kuijper, Wil Roebroeks, Sabine Gaudzinski-Windheuser, Kirsty Penkman, Lutz Kindler, Kate Britton
Article
Multidisciplinary Sciences
Ioannis Kontopoulos, Kirsty Penkman, Victoria E. Mullin, Laura Winkelbach, Martina Unterlaender, Amelie Scheu, Susanne Kreutzer, Henrik B. Hansen, Ashot Margaryan, Matthew D. Teasdale, Birgit Gehlen, Martin Street, Niels Lynnerup, Ioannis Liritzis, Adamantios Sampson, Christina Papageorgopoulou, Morten E. Allentoft, Joachim Burger, Daniel G. Bradley, Matthew J. Collins
Article
Environmental Sciences
Bryce D. Stewart, Stuart R. Jenkins, Charlotte Boig, Catherine Sinfield, Kevin Kennington, Andrew R. Brand, William Lart, Roland Kroger
Summary: Metal pollution has been found to significantly weaken shell strength in marine bivalves, leading to increased mortality and predation risk. This study highlights the importance of reevaluating currently accepted critical contamination levels for the survival of organisms exposed to contaminants.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Biochemical Research Methods
Samantha Presslee, Kirsty Penkman, Roman Fischer, Eden Richards-Slidel, John Southon, Carolina Acosta Hospitaleche, Matthew Collins, Ross MacPhee
Summary: This study explores the use of three different techniques to screen fossils for potential protein preservation, aiming to maximize proteomic information recovery while saving time and costs. The results indicate that both chiral amino acid analysis and MALDI-ToF MS are reliable screening methods for predicting protein survival in fossils, and their use could encourage further proteomic analysis of a wide range of palaeontological specimens, providing valuable insights into protein survival over time and in different environmental conditions.
JOURNAL OF PROTEOMICS
(2021)
Correction
Humanities, Multidisciplinary
Kirsty E. High, Kirsty E. H. Penkman
Summary: The revised version of this paper has been published and is available through the original article.
Article
Biochemistry & Molecular Biology
Sina Baleka, Victoria L. Herridge, Giulio Catalano, Adrian M. Lister, Marc R. Dickinson, Carolina Di Patti, Axel Barlow, Kirsty E. H. Penkman, Michael Hofreiter, Johanna L. A. Paijmans
Summary: This study investigates the dwarfing rate of an extinct Mediterranean dwarf elephant and shows that the Sicilian elephant lineage evolved from one of the largest terrestrial mammals to an island species weighing less than 20% of its original mass. The combination of ancient DNA with paleontological and geochronological evidence provides a more accurate timing of phenotypic changes.
Review
Biochemistry & Molecular Biology
Daniel J. Buss, Roland Kroger, Marc D. McKee, Natalie Reznikov
Summary: The structural hierarchy of bone, observed at different scales and in 3D, is essential to its mechanical performance. The 3D arrangement of the inorganic and organic constituents of bone at each length scale endows it with exceptional mechanical properties. Recent volumetric imaging studies have revealed the presence of twisted and curved motifs in bone, from individual mineralized collagen fibrils to whole bones. These patterns, which were not observable with previous 2D imaging techniques, are hypothesized to be directly linked to enhanced functionality rather than simply an energetically favorable way to assemble mineralized matrix components.
JOURNAL OF STRUCTURAL BIOLOGY-X
(2022)
Editorial Material
Multidisciplinary Sciences
Fabio Nudelman, Roland Kroger
Article
Anthropology
Ioannis Kontopoulos, Katrien Van de Vijver, Bart Robberechts, Matthew von Tersch, Gordon Turner-Walker, Kirsty Penkman, Matthew J. Collins
Summary: This study compares histological preservation in archeological bones from different burial types to unravel the histotaphonomy-to-funerary practices relationship. The study found that distinct histological patterns are observed only in bones from single coffin burials. Additionally, there is intraindividual and intrabone variability, which is important to consider for interpretation of the bones.
INTERNATIONAL JOURNAL OF OSTEOARCHAEOLOGY
(2022)
Article
Multidisciplinary Sciences
Kirsty E. H. Penkman, Geoff A. T. Duller, Helen M. Roberts, Debra Colarossi, Marc R. Dickinson, Dustin White
Summary: This review discusses two different dating approaches - trapped charge and amino acid geochronology - that utilize time-dependent changes in crystal signals to establish a chronology for Paleolithic remains. The diverse range of signals provides more information than just a chronology and allows for internal consistency checks.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Geography, Physical
Emily Millman, Lucy Wheeler, Katharina Billups, Darrell Kaufman, Kirsty E. H. Penkman
Summary: The study assessed the impact of two oxidative pre-treatments on amino acid concentration and D/L values in benthic and planktic foraminifers, finding that hydrogen peroxide pre-treatment is sufficient for AAR applications in foraminifera.
QUATERNARY GEOCHRONOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Peter Allen, David R. Bain, David R. Bridgland, Paul Buisson, Jan-Pieter Buylaert, Rachel Bynoe, William H. George, B. Andrew Haggart, David J. Horne, Ellen-May Littlewood, Alan R. Lord, Anna C. March, Ian Mercer, Rosalind Mercer, Andrew S. Murray, Kirsty E. H. Penkman, Richard C. Preece, John Ratford, Danielle C. Schreve, Andrew J. R. Snelling, Kadri Sohar, John Whittaker, Mark J. White, Tom S. White
Summary: This paper presents an updated geological reconstruction of the Quaternary evolution of the River Thames at its downstream extremities, close to the North Sea coast, based on new data from multi-disciplinary and citizen-science sources. It discusses the interaction of the Thames with the Anglian glaciation and the fluvial archives in southern Britain.
Article
Multidisciplinary Sciences
Celeste Kellock, Maria Cristina Castillo Alvarez, Adrian Finch, Kirsty Penkman, Roland Kroger, Matthieu Clog, Nicola Allison
Summary: This study optimizes a method to precipitate the CaCO3 polymorph aragonite from seawater and investigates the influence of aspartic acid on its structure and morphology. It is found that low concentrations of aspartic acid promote aragonite formation, while high concentrations inhibit precipitation. In addition, changes in the organic content of coral skeletons can affect the aragonite precipitation.
Article
Geography, Physical
Beatrice Demarchi, Samantha Presslee, Jorune Sakalauskaite, Roman Fischer, Julia Best
QUATERNARY INTERNATIONAL
(2020)
Article
Geography, Physical
Monika Devi, Naveen Chauhan, Ashok K. Singhvi
Summary: Devi et al. (2022) suggested that post-violet infrared stimulated luminescence (pVIRSL) of K-feldspars has a near zero athermal fading rate. This study investigates the mechanism and suitability of the pVIRSL signal for dating applications. The results show that pVIRSL is a recuperated signal resulting from the eviction and recapture of charges in deep traps by violet stimulation and subsequent infrared stimulation. The pVIR-SAR protocol worked well for dating seven K-feldspar samples from various depositional environments.
QUATERNARY GEOCHRONOLOGY
(2024)
Article
Geography, Physical
Chloe Baldreki, Andrew Burnham, Martina Conti, Lucy Wheeler, Michael J. Simms, Lawrence Barham, Tom S. White, Kirsty Penkman
Summary: Aragonitic calcium carbonate mollusc shells with complex shell microstructures can be used for amino acid geochronologies in Africa. Different microstructural shell layers may have different protein compositions, requiring sampling strategies. The 3AL shell portion showed closer adherence to closed-system behavior and demonstrated the potential of fossil achatinids for building relative amino acid geochronologies across Africa.
QUATERNARY GEOCHRONOLOGY
(2024)
Article
Geography, Physical
Patrick Chiroiu, Alexandru L. Onaca, Adrien Favillier, Mircea Voiculescu, Christophe Corona, Petru Urdea, Markus Stoffel
Summary: Snow avalanches present a constant threat to mountainous regions worldwide, and understanding past avalanche events is crucial for managing and mitigating avalanche hazards and risks. In this study, dendrogeomorphic techniques were used to analyze 17 avalanche paths in a small region of the Fagaras Mountains. The analysis reconstructed 174 snow avalanche years across all paths and revealed widespread avalanche occurrence in the study area. The study emphasizes the importance of investigating multiple avalanche paths in a small, homogeneous area to gain a better understanding of snow avalanche activity at both path-scale and mountain range-scale.
QUATERNARY GEOCHRONOLOGY
(2024)
