Results 131 to 140 of about 29,339 (247)

The Argon Geochronology Experiment (AGE)

, 2006
This viewgraph presentation reviews the Argon Geochronology Experiment (AGE). Potassium-Argon dating is shown along with cosmic ray dating exposure. The contents include a flow diagram of the Argon Geochronology Experiment, and schematic diagrams of the ...
Swindle, T. D., MacAskill, J. A., Bode, R., Fennema, A., Wiens, R. C., Cremers, D., Darrach, M. R., Chutjian, A., Clegg, S. M.   +8 more
core  

Earthquakes and the Metamorphic Sole of the Tinos Ophiolite, Cyclades, Greece

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.
Abstract We analyze deformation fabrics, compositions of melts, metamorphic temperatures, and paleopiezometric data beneath the Tsiknias Thrust, Tinos, Greece, which formed part of the plate boundary that, in Late‐Cretaceous time, absorbed convergence between Africa and Europe associated with final closure of the Vardar Ocean.
Thomas Lamont, Philip England, Lars Hansen, Andrew Smye   +3 more
wiley   +1 more source

Reconstruction of the geodynamic history of the Marun-Keu complex, the Polar Urals: a multidisciplinary approach

Записки Горного института
A comprehensive study of the evolutionary history of the Marun-Keu complex in the Polar Urals is presented. Utilizing both original data and published earlier information, this work establishes the temperature and pressure ranges corresponding to the ...
Aleksei V. Berezin, Laysan I. Salimgaraeva, Viktor N. Puchkov   +2 more
doaj  

LA-ICP-MS protocols for U-Pb geochronology and trace element analysis of zircons: Optimized implementation at the PetroChron laboratory. [PDF]

MethodsX
Pârlea M, Ene V, Ducea M, Luffi P, Stremțan C.   +4 more
europepmc   +1 more source

Multiple Subduction–Exhumation Cycles and Episodic Hydration–Metasomatism of an Oceanic Eclogite Block: Implications for Thermal Structure Evolution and Mass Transfer at the Subduction Interface

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.
Abstract The rarity of natural rocks that specifically record the physicochemical conditions of the subduction interface strongly hampers pertinent studies on metamorphic trajectories of high‐pressure (HP) rocks and related fluid–rock interactions. This study examines an oceanic eclogite block from the Huwan shear zone in the Hong'an orogen.
Dadi Cao, Liqing Xu, Xiangxin Zhang, Haofan He, Kang Cheng   +4 more
wiley   +1 more source

Correction: Insights into Sudbury's deep architecture: a revised geodynamic model for Earth's largest ore-bearing impact structure. [PDF]

Sci Rep
Haugaard R, Spray JG, Adetunji AQ, Vayavur R, Hamilton MA, Snyder D, Cheraghi S, Ayer J, Henry K, Jørgensen TRC, Serafini G, Smith R, Gibson L.   +12 more
europepmc   +1 more source

Unraveling the Evolution of Silicic Volcanism in a Distributed Volcanic Field: Insights From Harrat Khaybar, Western Saudi Arabia

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.
Abstract Distributed basaltic volcanic fields commonly host minor but significant silicic magmas, the origin of which remains debated. At Harrat Khaybar (western Saudi Arabia; ca. 1.7 Ma to present), volcanic activity erupted compositions range from alkali olivine basalt to trachyte and comendite.
Abdullah Alohali, Shanaka de Silva, Charles Lewis, Suhail S. Alhejji, Shane J. Cronin, Chris J. Russo   +5 more
wiley   +1 more source

The problem of identifying lower crustal garnet-clinopyroxene granulites and mantle eclogites: a case study of xenoliths from the V.Grib pipe

Записки Горного института
The article presents a comprehensive analysis of the mineralogical and geochemical features of xenoliths from the V.Grib kimberlite pipe, represented by lower crustal garnet-clinopyroxene granulites and mantle eclogites. A comparative characterization of
Ekaterina V. Stetskaya, Laysan I. Salimgaraeva, Aleksei V. Berezin, Viktor N. Ustinov, Roman N. Pendelyak   +4 more
doaj  

Differentiated Diagenesis during the Capitanian Stage at the Northern Margin of the Upper Yangtze Platform: Insights from Tectono-Sedimentary Controls of the Emeishan Large Igneous Province. [PDF]

ACS Omega
Ning K, Shi Z, Tan Q, Tian Y, Li W, Tang S, Liu H.   +6 more
europepmc   +1 more source

Subduction Recycling and Closure of the Paleo‐Asian Ocean in the Beishan Orogen: Constraints From the Niujuanzi Ophiolitic Mélange and Associated Intrusions

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.
Abstract Ophiolitic mélanges and associated intrusions provide key archives for reconstructing the evolution of ancient ocean basins and subduction‐related mantle modification. The Hongliuhe–Niujuanzi–Xichangjing ophiolitic mélange in the central Beishan Orogen preserves important records of the Paleo‐Asian Ocean, but the timing of oceanic subduction ...
Yujia Song, Xijun Liu, Yao Xiao, Honghu Zeng, Pengde Liu   +4 more
wiley   +1 more source