Results 111 to 120 of about 1,569 (144)

Experimental Shock Metamorphism of Zircon, Apatite, and Whitlockite From 5 to 40 GPa

Journal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.
Abstract Hypervelocity impacts modify planetary crusts and can alter the microstructures of key minerals used to reconstruct planetary histories. We investigated the potential effects of impacts on three common accessory minerals found in terrestrial crusts by experimentally shocking zircon, apatite, and whitlockite at 5, 10, 20, and 40 GPa.
K. A. Cone, D. Trail, M. Nakajima, T. M. Erickson, G. Garapić, E. A. Bell, M. D. Mouser, M. J. Cintala, B. Zhang, T.‐W. Chen, S. Roy   +10 more
wiley   +1 more source

Fossilised Pioneer Microbialite Communities on Basaltic Substrates at Lake Ashenge (Tigray, Ethiopia): A Model for Ecosystems in Noachian–Hesperian Martian Lakes?

Journal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.
Abstract Microbial communities are strongly controlled by local nutrient availability, frequently resulting from mineral weathering and erosion. On Earth, basaltic rocks in habitable alkaline lacustrine environments are often initially colonised by ‘pioneer’ communities that induce the precipitation of fine‐scale microbial carbonate ‘coatings’; on Mars,
Keyron Hickman‐Lewis, Victor Amir Cardoso Dorneles, Tsegazeabe Hadush Haileselasie, Miruts Hagos, Keewook Yi, Jae‐Il Park, Barbara Cavalazzi   +6 more
wiley   +1 more source

Coupled Effects of Grain Size and Metallic Iron on Spectral and Polarimetric Properties of Lunar Simulants

Journal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.
Abstract The lunar surface is heterogeneous in grain size and metallic iron abundance due to diverse histories of space weathering. The spectral and polarimetric properties of the lunar regolith are strongly affected by both grain size and metallic iron particles.
Eunjin Cho, Seungju Han, Young‐Jae Kim, Serin Kim, Keewook Yi, Eunji Yi, Dongha Shin, Enxi Jin, Mingyeong Lee, Chae Kyung Sim, Minsup Jeong   +10 more
wiley   +1 more source

Quantitative Evaluation of Shock Metamorphism in Clinopyroxene Using In Situ X‐Ray Diffraction Measurement of Lattice Strain

Journal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.
Abstract Shock metamorphism is a ubiquitous process in our solar system. Shock pressure can be related to the lattice strain (ε) of individual minerals within a shocked sample. The lattice strain can be quantified within intact samples by in situ micro‐X‐ray diffraction (μXRD) using the Williamson‐Hall method. The Williamson‐Hall lattice strain (W‐H ε)
Laura E. Jenkins, Roberta L. Flemming, Sam Nicholson, Mark Burchell, Kathryn Harriss, Anne H. Peslier, Roy G. Christoffersen, Jörg Fritz, Cornelia Meyer   +8 more
wiley   +1 more source

A Machine‐Learning Surrogate for Differentiable Phase Equilibrium Modeling of Mantle Rocks on a Planetary Scale

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 5, October 2026.
Abstract Modeling processes within Earth's and other planetary bodies' mantle requires constraints from phase equilibrium to infer how changes in phase abundance and composition affect physical properties and geochemical processes. When applying such thermodynamic models on a planetary scale, performance becomes especially crucial.
Philip Hartmeier, Pierre Lanari
wiley   +1 more source

Looking Under the Orogenic Lid—Assessing the European Basement Beneath the Alpine Wedge by U‐Pb Zircon Geochronology

Tectonics, Volume 45, Issue 10, October 2026.
Abstract Following continental collision, the distal European margin was overridden by the Alpine wedge and is now largely concealed beneath the mostly intact orogenic lid. Consequently, the geological evolution and nature of the hidden basement domains remain poorly constrained.
Bianca Heberer, Elisabeth Holzner, Veronika Tenczer, Friedrich Finger, Bernhard Salcher, István Dunkl, Axel Gerdes, Hans Egger, Gertrude Friedl, Gabor Tari, Maria Parlea, Hubert Putz   +11 more
wiley   +1 more source

Episodic Arc Behavior in an Accretionary Orogen: Insights From the New England Orogen, Eastern Australia

Tectonics, Volume 45, Issue 10, October 2026.
Abstract Detrital zircon U–Pb geochronology from Triassic–Jurassic basins in the New England Orogen (NEO) constrains sediment provenance and episodic continental arc evolution along the eastern Gondwanan margin. Dominant zircon clusters at 270–230 Ma and 340–300 Ma in these basins were likely sourced from contemporaneous magmatism in the NEO ...
Yanxiong Zhang, Gideon Rosenbaum, Carlos Spier   +2 more
wiley   +1 more source

High Temporal Resolution Record of Flare‐Up Magmatism Reveals Tectonic and Local Controls on Crustal Thickening in the Cretaceous Continental Arc of the North Cascades

Tectonics, Volume 45, Issue 10, October 2026.
Abstract Magmatic output in continental arcs is often variable, with short‐lived flare‐ups separated by prolonged lulls. Flare‐ups commonly coincide with increased crustal thickness, which has been interpreted as both a cause and a consequence of elevated magmatism.
Sourav Karmakar, Sarnav Bakshi, Michael P. Eddy, Robert Miller, Stacia M. Gordon   +4 more
wiley   +1 more source

The Material Basis of 18th‐Century Meissen Porcelain

Archaeometry, Volume 68, Issue 5, Page 908-918, October 2026.
ABSTRACT In the summer of 1708, the quest for making hard‐paste porcelain from Saxonian clay and other mineral resources succeeded. This was achieved by applying as its essential ingredient newly discovered pure kaolin from Heidelsberg near Aue, western Saxon Ore Mountains.
Robert B. Heimann
wiley   +1 more source

Dispersal, source and glass chemistry of a third tephra unit within Iceland's Settlement Layer

Boreas, Volume 55, Issue 4, Page 1143-1159, October 2026.
Tephra layers may be studied to understand the dynamics and sequence of past explosive volcanism. In Iceland, the distinctive Settlement Layer (AD ~877) underlies almost all archaeological evidence for the Norse Settlement and is preserved in soils across Iceland and as cryptotephra overseas.
Conner A. G. Morison, Guðrún Larsen, Anthony J. Newton, Andrew J. Dugmore   +3 more
wiley   +1 more source