Results 101 to 110 of about 673,502 (223)

Tracking Intragranular Stress Evolution in Deforming Sandstone Using X‐Rays

open access: yesJournal of Geophysical Research: Solid Earth, Volume 130, Issue 7, July 2025.
Abstract Measuring and understanding brittle failure at the (sub)‐grain scale is a key challenge to unravel the initiation of system‐size failure in rocks. Recent developments in synchrotron X‐ray diffraction techniques enable non‐destructive in situ measurements of crystal lattice orientation, elastic strain, and stress at grain to intra‐grain scales.
Jean‐Baptiste Jacob   +5 more
wiley   +1 more source

Rupture and Relamination of Continental Lithosphere in a Subduction System (Variscan Orogeny, SW Iberia)

open access: yesTectonics, Volume 44, Issue 7, July 2025.
Abstract Relamination is closely connected to subduction zones. Despite the numerous high‐P metamorphic belts recognized on Earth, relamination remains a poorly documented process. We present a continental subduction zone where the exhuming high‐P rocks became a relaminant under the upper plate.
Rubén Díez Fernández   +7 more
wiley   +1 more source

The Inter‐Cratonic Neoproterozoic Katangan Basin of Central Africa: Rift Basin Formation, Orogenic Inversion and Potential Fluid Pathways

open access: yesTectonics, Volume 44, Issue 7, July 2025.
Abstract The tectono‐stratigraphic development of continental basins is critical to an understanding of continental tectonics and the formation of metal deposits. The Neoproterozoic, inter‐cratonic Katangan copper basin of Central Africa records a tectono‐stratigraphic evolution and the generation of potential metal transporting fluid pathways ...
M. C. Daly   +3 more
wiley   +1 more source

Advancements in radiocarbon dating: An overview of its impact on Mexican archaeology

open access: yesArchaeometry, Volume 67, Issue S2, Page S82-S99, July 2025.
Abstract In this article, we provide a concise historical summary tracing the evolution of radiocarbon dating techniques in Mexico and Central America. We explore the contributions of early pioneers who first employed radiocarbon dating methods, leading to the establishment of a Mexican accelerator mass spectrometry laboratory. The study highlights its
Corina Solís   +3 more
wiley   +1 more source

Kern Canyon Fault Quartz Piezometry and Thermometry: How Weak are Rocks in a Deep Fault? [PDF]

open access: yes, 2012
This project is an investigation of the strength of rocks from 10-25 kilometers depth in the Kern Canyon Fault in the Sierra Nevada. When this fault was active, it behaved similarly to the San Andreas Fault in California and the Denali Fault here in ...
Tsigonis, Rebekah
core  

Effect of cement water contacting an aged cementitious grout on the dissolution rates of inactive nuclear glass SON68

open access: yesJournal of the American Ceramic Society, Volume 108, Issue 7, July 2025.
Abstract The long‐term behavior of high‐level radioactive waste glass depends on the mineralogical and geochemical interactions between the various components of the multibarrier system, under geological repository conditions. The present study focuses on SON68 glass alteration in synthetic cement water and at 50°C and 70°C.
Mathieu Debure   +8 more
wiley   +1 more source

Written in bones: palaeoclimate histotaphonomic history inferred from a complete Megatherium skeleton preserved in the Atacama Desert

open access: yesPalaeontology, Volume 68, Issue 4, July/August 2025.
Abstract A nearly complete and relatively well‐preserved skeleton of the giant ground sloth Megatherium sp. in the hyperarid core of the Atacama Desert reveals how climate related taphonomic processes drastically transformed these remains over time.
Luisa Straulino Mainou   +14 more
wiley   +1 more source

Size evolution of micropyrite from diagenesis to low-grade metamorphism [PDF]

open access: yes, 2018
Cnudde, Veerle   +5 more
core   +1 more source

Nodular calcrete from the Lower Permian Korpád Sandstone Formation (borehole Dinnyeberki 9015, Mecsek Mts, Hungary) and its palaeoenvironmental significance [PDF]

open access: yes, 2013
The Korpád Sandstone in the 9015 drill core (Mecsek Mts.) consists of red mudstones and interbedded calcrete crusts with sandstones and conglomerates. Calcrete microfabrics reveal micritic mottles, rhizocretions, smaller root casts and Microcodium-like ...
Bajnóczi, Bernadett   +2 more
core  

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