Results 141 to 150 of about 45,988 (266)

Past the First Date: Ensemble Concordant–Discordant Comparison for Zircon Pb‐Loss Analysis

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 9, September 2026.
Abstract Zircon uranium–lead (U–Pb) geochronology is a cornerstone of Earth science for resolving the timing of deep‐time processes, yet the U–Pb system does not always behave as a closed chronometer. Selective loss of radiogenic Pb during fluid alteration or thermal disturbance can shift isotopic ages and generate discordant analyses. Some zircon data
Lucy M. Mathieson, Christopher L. Kirkland   +1 more
wiley   +1 more source

Fluorite and rare-metals mineralization in greisenized granite of Um Naggat area, Egypt constrained by physical separation and beneficiation assessment. [PDF]

Sci Rep
Fawzy MM, Diab M, Abdel Gawad AE.
europepmc   +1 more source

Depositional History of the Namibian Mud Belt Reveals Late Holocene Weakening of the Benguela Coastal Current

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 9, September 2026.
Abstract We investigate late Holocene changes in the northern Benguela Upwelling System using a multi‐proxy approach on shallow shelf deposits from the Namibian mud belt. Three sediment cores characterized by organic carbon‐rich, anoxic, and partly gas‐bearing sediments were retrieved along a sampling transect at 23°S in August 2019.
Michael Kossack, Chloe H. Anderson, Nikolas Römer‐Stange, Jürgen Titschack, Florian Scholz, Matthias Zabel   +5 more
wiley   +1 more source

Insights into early continental crust formation from the most ancient heart of Scotland. [PDF]

Nat Commun
Volante S, Torres-Mancinelli F, Kaempf J, Barrote V, Johnson T, Kirkland C, Scicchitano MR, Tavazzani L, Basak S, Bouvier AS, Dziggel A, Gerdes A.   +11 more
europepmc   +1 more source

Building the Andean Crust at ∼35°S: Arc Geochemistry Reveals Cretaceous Thinning and Rapid Neogene Thickening

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract Quantification of the timing and mechanisms of crustal thickening in Cordilleran orogenic hinterlands remains challenging. We address this in the Andes using whole‐rock geochemistry and zircon petrochronology from a >70 Myr volcanic record in the Tinguiririca valley of Chile (∼35° ${}^{\circ}$S), which captures a pivotal transition from ...
Chance B. Ronemus, Caden J. Howlett, Peter G. DeCelles, Barbara Carrapa, Andrés Echaurren, Matías Barrionuevo, Jesse G. Mosolf, Michelle L. Foley, Mihai N. Ducea   +8 more
wiley   +1 more source

Enriching Paleogeographic Reconstruction Through the Integration of Bayesian Age Models Into Site‐Based Apparent Polar Wander Paths

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract Apparent polar wander paths (APWPs) synthesized from paleomagnetic data are foundational to our understanding of the long‐term motions of lithospheric plates. Recent progress has highlighted the advantages of developing such paths from paleomagnetic sites that provide individual snapshots of the ancient geomagnetic field.
Yiming Zhang, Nicholas L. Swanson‐Hysell, Mathew Domeier, Leandro Gallo, Facundo Sapienza, Diego Alberto Osorio Afanador   +5 more
wiley   +1 more source

Development of High-Performance Mullite Steel-Pouring Brick. [PDF]

Materials (Basel)
Huang M, Qi Y, Liang X, Liu G, Cheng B.
europepmc   +1 more source

Labrador Coastal Current Variability During the Holocene

Paleoceanography and Paleoclimatology, Volume 41, Issue 9, September 2026.
Abstract The Labrador Coastal Current (LCC) is a buoyancy driven current comprised of outflows from Baffin Bay and Hudson Bay that transports freshwater and nutrients to the Scotian Shelf and Gulf of Maine in the NW Atlantic. This study reconstructs Holocene flow speeds over the Labrador Shelf, using the sortable silt index at two core sites off ...
Adam J. White, Stephanie S. Kienast, Markus Kienast, Eric Oliver, Kai‐Frederik Lenz, Henriette Kolling, Ralph Schneider, Paul S. Hill   +7 more
wiley   +1 more source

A reset clock cannot keep time: Thermal overprinting obscures Great Unconformity origins in North China. [PDF]

Proc Natl Acad Sci U S A
McDannell KT, Gallagher K, Guenthner WR, Keller CB, Shuster DL.   +4 more
europepmc   +1 more source

Dominant Glacial Control on Plio‐Pleistocene to Recent Exhumation of the Kyrgyz Range (Tien Shan)

Tectonics, Volume 45, Issue 9, September 2026.
Abstract The evolution of mountain ranges results from complex interactions between tectonics and climate, yet their relative contributions to exhumation can be difficult to discern. Previous thermochronological studies in the Kyrgyz Range (Tien Shan) attributed late Cenozoic rapid exhumation primarily to increased tectonic shortening without ...
A. Mariotti, T. F. Schildgen, E. R. Sobel, L. Gong, P. A. van der Beek, M. Bernard, I. M. Wapenhans, J. Glodny, T. Omurbekov, K. Asilbekov, B. Moldobekov   +10 more
wiley   +1 more source