Results 91 to 100 of about 5,319 (257)

Coupling Phase Equilibrium Modelling and Apatite‐in‐Garnet Elastic Barometry to Unravel the P–T Path of the Micaschist Unit From the Zicavo Metamorphic Complex (Corsica, France)

Journal of Metamorphic Geology, Volume 43, Issue 7, Page 681-705, September 2025.
ABSTRACT To gain insights into the pressure–temperature evolution of a scarcely studied portion of the Variscan basement of Corsica in southern Europe, we combined phase equilibrium modelling, Zr‐in‐rutile thermometry and apatite‐in‐garnet elastic barometry. We investigated Grt‐St micaschist rocks containing garnet grains of several millimetres in size
Lorenzo Dulcetta, Xin Zhong, Gabriele Cruciani, Johannes Vrijmoed, Jan Pleuger, Marcello Franceschelli, Timm John   +6 more
wiley   +1 more source

A Clockwise P-T Path from the Variscan Basement of the Tisza Unit, Pannonian Basin, Hungary [PDF]

, 1999
The polymetamorphic basement of the Tisza Unit forms a detached fragment of the Variscan European foreland of the Neotethyan realm. A clockwise evolution path of a gneiss-amphibolite complex of the Tisza Unit was reconstructed, investigating the ...
G. Nagy, P. Arkai, P. Horvath
core   +1 more source

Structure of the NE Oman Mountains: A Review of Robust Geochronological Constraints for Tectonic Models of Ophiolite Obduction and Continental Subduction

Tectonics, Volume 44, Issue 8, August 2025.
Abstract The Late Cretaceous Semail ophiolite, Oman was emplaced onto the previously passive continental margin of Arabia. Recent geochronology from the ophiolite, its metamorphic sole, and associated high‐pressure (HP) metamorphic rocks have resulted in a proliferation of new tectonic models explaining the sequence of events associated with ophiolite ...
Michael P. Searle, Joshua M. Garber, Matthew Rioux   +2 more
wiley   +1 more source

A record of magmatic differentiation in plutonic xenoliths from Santorini (Greece)

Volcanica
Plutonic xenoliths from volcanic arcs provide unique insights into transcrustal magmatic systems in subduction zone settings. At Santorini volcano in the Central Aegean Volcanic Arc (Greece), plutonic xenoliths occur throughout a sequence of lavas and ...
Sean Whitley, Ralf Halama, Ralf Gertisser, Thor H. Hansteen, Matthias Frische, Torsten Vennemann   +5 more
doaj   +1 more source

The Distribution of Major and Trace Elements Across a Garnet Population From the Kalak Nappe Complex (Finnmark, Scandinavian Caledonides): Evidence for Size‐Dependent Growth and Compositional Equilibration in the Garnet Zone

Journal of Metamorphic Geology, Volume 43, Issue 6, Page 613-640, August 2025.
ABSTRACT A garnet population from the lower Kalak Nappe Complex in Finnmark (Arctic Norway) was characterized using high‐resolution X‐ray micro‐computed tomography, electron probe micro‐analysis and laser ablation inductively coupled plasma mass spectrometry mapping to assess the extent of compositional equilibration and the controlling crystallization
M. T. A. G. Yogi, F. Gaidies, O. K. A. Heldwein, A. H. N. Rice   +3 more
wiley   +1 more source

Review of South African research on volcanic and related rocks and mantle-derived materials : 1999-2002 [PDF]

, 2003
This report reviews South African research relating to the scientific interests of the International Association of Volcanology and Chemistry of the Earth's Interior (IAVCEI) and which was published between 1999 and 2002.
Marsh, J S
core   +1 more source

Deep lithospheric dynamics beneath the Sierra Nevada during the Mesozoic and Cenozoic as inferred from xenolith petrology [PDF]

, 2001
Peridotite xenoliths erupted in late Miocene basalts (~8 Ma) in the central Sierra Nevada sample a lithosphere that is vertically stratified in terms of age and thermal history.
Brimhall, George H., Jr., Lee, Cin-Ty, Rudnick, Roberta L.   +2 more
core   +1 more source

Efficacy of Assessing Magmatic Storage Depth Using Natural Samples, Experiments and Thermodynamic Models: A Case Study From Valles Caldera, NM (USA)

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 7, July 2025.
Abstract Estimates of magmatic storage are typically made using mineral assemblages in natural samples, experiments and thermodynamic models (e.g., MELTS), where each method has limitations. Here, we compare each of these methods to assess their utility in estimating storage conditions for post‐collapse, two‐feldspar high‐silica rhyolites (HSRs ...
Magdalen A. Grismer, Laura E. Waters, Gordon M. Moore, Gabriela A. Farfan   +3 more
wiley   +1 more source

Pressure-Temperature Conditions of Granulite Formation in Rogaland, SW Norway [PDF]

, 1994
The geology of SW Norway is dominated by high-grade amphibolite to granulite facies gneisses with associated migmatites and anorthosite-magerite complexes. Previous work suggests that metamorphism consisted of two high temperature events at 1.45 Ga (MI)
Edwards, Katrina
core  

Constraints from rocks in the Taiwan orogen on crustal stress levels and rheology [PDF]

, 2012
Taiwan's Hsüehshan range experienced penetrative coaxial deformation within and near the brittle-plastic transition between ∼6.5 and 3 Ma. This recent and short-lasting deformation in an active, well-studied orogen makes it an ideal natural laboratory ...
Avouac, Jean-Philippe, Chan, Yu-Chang, Kidder, Steven B.   +2 more
core   +1 more source