Results 51 to 60 of about 380 (177)

Cosmogenic nuclides in stony meteorites revisited [PDF]

Meteoritics & Planetary Science, 2009
Abstract— We present new model calculations for depth and size dependent cosmogenic production rates in ordinary and carbonaceous chondrites by galactic cosmic rays. This model, essentially that of Leya et al. (2000a), folds together particle spectra and cross sections for the relevant nuclear reactions, but has been significantly improved due to major
Leya, Ingo, Masarik, Jozef
openaire   +2 more sources

Multiproxy Chronologies of the Hurd Rock Glacier (Livingston Island, South Shetland Islands, Maritime Antarctica): Between the Late‐Stage Stabilization and Flow Deceleration

Permafrost and Periglacial Processes, Volume 37, Issue 3, Page 535-550, July/September 2026.
ABSTRACT The Hurd Rock Glacier, located on Livingston Island (South Shetland Islands archipelago, Maritime Antarctica), is a tongue‐shaped feature composed of angular boulders, displaying transverse ridges and furrows, and featuring lobate structures, which are more prominently developed in its frontal sector.
Rosana Menéndez‐Duarte, Jesús Ruiz‐Fernández, Laura Rodríguez‐Rodríguez, José M. Fernández‐Fernández, Vincent Rinterknecht, ASTER Team   +5 more
wiley   +1 more source

A new inversion algorithm (PyMDS) based on the Pyro library to use chlorine 36 data as a paleoseismological tool on normal fault scarps

Applied Computing and Geosciences
Paleoseismology (study of earthquakes that occurred before records were kept and before instruments can record them) provides useful information such as recurrence periods and slip rate to assess seismic hazard and better understand fault mechanisms ...
Maureen Llinares, Ghislain Gassier, Sophie Viseur, Lucilla Benedetti   +3 more
doaj   +1 more source

Evidence of slow millennial cliff retreat rates using cosmogenic nuclides in coastal colluvium [PDF]

Earth Surface Dynamics
The erosion of rocky coasts contributes to global cycles of elements over geological times and also constitutes a major hazard that may potentially increase in the future. Yet, it remains a challenge to quantify rocky coast retreat rates over millennia –
R. Bossis, R. Bossis, V. Regard, S. Carretier, S. Choy   +4 more
doaj   +1 more source

A Transient Coastal Uplift Event Revealed by Pleistocene Marine Terraces Along the 2015 M8.3 Illapel Earthquake Rupture, Chile

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract Uplifted Pleistocene marine terraces in the Illapel area along the forearc of central Chile record spatially and temporally variable uplift rates on glacial‐cycle timescales. However, the underlying mechanisms for this uplift variability and its potential relationship with the megathrust‐earthquake cycle remain poorly understood.
Roland Freisleben, Julius Jara‐Muñoz, Daniel Melnick, Dominik Brill, Simone Racano, Christian Creixell Torres, Ismael Murillo Rogers, Marcelo M. Rivadeneira, Manfred R. Strecker   +8 more
wiley   +1 more source

Paired ¹⁴C–¹⁰Be exposure ages from Mount Murphy, West Antarctica: Implications for accurate and precise deglacial chronologies [PDF]

Geochronology
Cosmogenic-nuclide surface exposure ages provide empirical data for validating models simulating the timing and pace of ice-sheet response to a warming climate. Increasing emphasis is being placed on obtaining exposure ages that both accurately constrain
J. R. Adams, J. R. Adams, D. H. Rood, K. Wilcken, S. J. Roberts, J. S. Johnson   +5 more
doaj   +1 more source

Morphological Dating of Fluvial Terrace Risers Across Spatial and Temporal Scales

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 7, July 2026.
Abstract Fluvial terraces are valuable terrestrial records of past climatic and tectonic changes. Morphological dating, which quantifies the degradation of the riser between two terraces, offers a relatively simple and cost‐effective alternative to other dating methods.
L. Grimm, F. McNab, V. M. Fernandes, T. F. Schildgen   +3 more
wiley   +1 more source

The distribution and magnitude of subglacial erosion on millennial timescales at Engabreen, Norway

Annals of Glaciology, 2019
We quantify the magnitude of millennial-scale glacial erosion at Engabreen, a temperate glacier in coastal northern Norway, using the in situ cosmogenic nuclides carbon-14 (14C) and beryllium-10 (10Be) in bedrock exposed recently by glacial retreat ...
Cari Rand, Brent M. Goehring
doaj   +1 more source

Quaternary Glacial Erosion of the Hohe Tauern, Eastern European Alps: Assessing the Resolution Potential of Low‐Temperature Thermochronology

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract Low‐temperature thermochronology records rock cooling, which results from (generally erosion‐driven) exhumation and/or other processes that alter the geotherm. Apatite (U‐Th)/He (AHe) thermochronology can record landscape changes associated with km‐scale erosion and has previously been used to assess Quaternary glacial incision in large ...
I. M. Wapenhans, P. A. van der Beek, M. Bernard, C. Colleps, L. Gong, A. Mariotti, E. Sobel, J. Amalberti, J. Glodny, J. Stammeier   +9 more
wiley   +1 more source

Glacier variations in the European Alps at the end of the last glaciation

Cuadernos de Investigación Geográfica, 2015
The Last Glacial Maximum in the Alps lasted from approximately 30 to 19 ka. Glaciers reached out onto the forelands on both sides of the main Alpine chains, forming piedmont lobes in the north and filling the Italian amphitheatres to the south.
S. Ivy-Ochs
doaj   +1 more source