Results 221 to 230 of about 10,541 (259)

Holocene Glacial–Paraglacial–Periglacial Transitions of a Sub‐Arctic Glacial Cirque, Fremri‐Grasárdalur, Northern Iceland

Permafrost and Periglacial Processes, Volume 37, Issue 1, Page 78-106, January/March 2026.
ABSTRACT The aim of this work is to study a variety of glacial, periglacial and paraglacial features found in a small cirque, Fremri‐Grasárdalur, in Tröllaskagi (Northern Iceland). We implement a multidisciplinary approach combining high‐resolution geomorphological mapping, horizontal/vertical boulder displacement (from 1994 to 2019) and surface ...
Javier Santos‐González, David Palacios, Rosa B. González‐Gutiérrez, José M. Fernández‐Fernández, Irene Schimmelpfennig, Sergio Peña‐Pérez, Luis M. Tanarro, Nuria Andrés, Adrián Melón‐Nava, Wesley R. Farnsworth, Skafti Brynjólfsson, Þorsteinn Sæmundsson, Georges Aumaitre, Karim Keddadouche   +13 more
wiley   +1 more source

Dissolved and Particulate Organic Carbon Characteristics in Summer and Winter Waters of the Lena Delta

Permafrost and Periglacial Processes, Volume 37, Issue 1, Page 154-166, January/March 2026.
ABSTRACT Rapid Arctic warming accelerates permafrost thaw, altering water flow and organic matter transport to aquatic ecosystems. To identify sources and seasonality of OC at the mouth of the Lena River, we measured summer and winter concentrations and C isotopes (∆14C and δ13C) of DOC and POC along a 140‐km transect of the Lena Delta.
O. Ogneva, G. Mollenhauer, T. Sanders, B. Juhls, J. Palmtag, M. Fuchs, J. Hammes, H. Grotheer, P. J. Mann, S. Opfergelt, J. Strauss   +10 more
wiley   +1 more source

Voluminous Inflated Lobate Flows on the Distal Rift Zones of Axial Seamount, Juan de Fuca Spreading Ridge

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 1, January 2026.
Abstract Three voluminous inflated lobate lava flow complexes on the distal rifts of Axial Seamount are much larger than other known flows in the global spreading system. Each complex is 65–100 km2, is up to 130 m thick, and is ∼3.0–4.6 km3, almost 100 times the volumes of historical Axial flows.
Jennifer B. Paduan, David A. Clague, David W. Caress, Ryan Portner, Morgane Le Saout, Brian Dreyer   +5 more
wiley   +1 more source

Nd Isotope Response to Precipitation Variability in the Western Tropical Pacific Over the Last 30 kyr

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 1, January 2026.
Abstract Dissolved neodymium (Nd) isotopes are key tracers for water mass mixing in the open ocean and for land‐ocean exchanges in marginal seas. Hydrogenous Nd isotope ratios (expressed as εNd) in cores north of the equator reflect values of the surrounding lithology and tend to vary in accordance with local rainfall records, indicating higher ...
A. P. S. Cruz, C. Basak, A. K. I. U. Kapuge, L. Lo   +3 more
wiley   +1 more source

Evidence of Subduction, Collision, and Extension in Northern Borneo: Constraints From Receiver Functions

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 1, January 2026.
Abstract What happens when subduction stops is a key, but poorly understood, part of the tectonic cycle. Northern Borneo (Sabah) with a complex geological history of multiple episodes of subduction, magmatism, uplift, subsidence, and extension since the Mesozoic, is an ideal location for studying post‐subduction processes.
Amy Gilligan, David G. Cornwell, Nicholas Rawlinson, Felix Tongkul, Simone Pilia, Tim Greenfield, Conor A. Bacon   +6 more
wiley   +1 more source

Deep Water Renewal in the Amerasian Basin Derived From Natural and Anthropogenic Tracer Data Sets

Journal of Geophysical Research: Oceans, Volume 131, Issue 1, January 2026.
Abstract The deep waters of the Amerasian Basin in the Arctic Ocean are among the most isolated in the modern Arctic Mediterranean Sea (e.g., Schlosser et al., 1997, https://doi.org/10.1016/s0168‐583x(96)00677‐5). In this study, we use a suite of tracers spanning a range of timescales—including chlorofluorocarbons (CFCs), SF6, radiocarbon (14C), and ...
A. Pasqualini, W. M. Smethie Jr., Robert Newton, P. Schlosser   +3 more
wiley   +1 more source

A Fluvio‐Lacustrine Environment Preserved in the Jezero Crater Inlet Channel, Neretva Vallis, Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.
Abstract Martian fluvial valleys provide evidence for the surface flow of liquid water, making them a key target for rover‐based investigations of ancient habitability. The Mars 2020 Perseverance rover spent ∼85 sols exploring the Bright Angel formation, exposed across the floor of Neretva Vallis: the western inlet channel of Jezero crater.
Alexander J. Jones, Robert Barnes, Sanjeev Gupta, Gerhard Paar, Joel Hurowitz, Brittan V. Wogsland, Adrian Broz, Hemani Kalucha, Athanasios Klidaras, Kathryn M. Stack, Patrick Russell, Briony Horgan, Bradley Garczynski, Melissa Rice, James F. Bell III, Jusin N. Maki, Svein‐Erik Hamran, Alicia Vaughan, Justin I. Simon, Oak Kanine, Stephanie A. Connell, Henry Manelski, Ashley Murphy, Olivier Beyssac, Nicolas Mangold, Olivier Gasnault, Christoph Traxler, Adrian Brown, David Flannery, Nicolas Randazzo, Jesús Martínez‐Frías, Kenneth A. Farley   +31 more
wiley   +1 more source

Chronology of early China: A radiocarbon databank for Chinese archaeology. [PDF]

Sci Data
Qiu M, Du L, Staff R, Yan Z, Yan T, Cao H, Gosden C, Liu R, Dong G.   +8 more
europepmc   +1 more source

Shifts in Fossil Benthic Foraminiferal Community Trajectories During the Last Deglaciation Along the European Margin

Paleoceanography and Paleoclimatology, Volume 41, Issue 1, January 2026.
Abstract Constraining how faunal communities vary over time and space in response to environmental change has long been a major goal of paleoecologists. Among fossilized organisms, few yield a better and greater detailed record than foraminifera to understand past marine conditions.
R. Fentimen, A. Sturbois, M. Mojtahid
wiley   +1 more source

Unlocking the secrets of ancient Texas cave paintings. [PDF]

Sci Adv
Whitley DS.
europepmc   +1 more source