Results 51 to 60 of about 1,756 (223)

P–T Modelling Constrains the Depth of Emplacement of the Porto Azzurro Pluton and Implies Minor Exhumation Caused by the Zuccale Fault (Island of Elba, Italy)

open access: yesJournal of Metamorphic Geology, EarlyView.
ABSTRACT Understanding the pressure of emplacement of granitic intrusions is crucial to understanding the exhumation history of plutons and constraining the tectonic setting of magma emplacement. However, P–T and geochronological constraints from exhumed plutons are often characterized by large uncertainties, especially in shallow crustal settings with
Samuele Papeschi   +4 more
wiley   +1 more source

IMPROVED MAGNETIC DATA ANALYSES AND ENHANCEMENT TECHNIQUES FOR LITHOLOGICAL AND STRUCTURAL MAPPING AROUND AKURE, SOUTHWESTERN NIGERIA [PDF]

open access: yesEarth Science Malaysia, 2018
This study employs improved magnetic data analyses and enhancement techniques to map and interpret the lithological and structural features around Akure and its environs.
Akingboye A. Sunny,   +2 more
doaj   +1 more source

LifeMet: Report on the 2024–2025 meteorite recovery expedition in Dronning Maud Land, Antarctica for the study of microbe–meteorite interactions

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract Since the discovery of nine meteorites near the Yamato mountains in 1969, Antarctica has been recognized as a superb location for meteorite recovery. While Antarctic recovery expeditions prioritize meteorite preservation for mineralogical and planetary studies, meteorites are not typically collected for biological applications.
Rachael Lappan   +2 more
wiley   +1 more source

The age and origin of the Vaasa migmatite complex revisited [PDF]

open access: yesBulletin of the Geological Society of Finland, 2014
The origin of the Vaasa migmatite complex was studied by using whole-rock Sm-Nd and zircon Lu-Hf and U-Pb data in conjunction with whole-rock major and trace element geochemistry.
E. Suikkanen   +3 more
doaj   +1 more source

Ductile Extrusion Triggered by Continental Collision in NE Brazil

open access: yesTerra Nova, EarlyView.
ABSTRACT The Borborema Province in northeastern Brazil hosts one of the world's largest strike‐slip shear zone networks, active during the late Neoproterozoic assembly of West Gondwana. Whether these shear zones initiated during active continental collision or as a post‐orogenic response to far‐field stresses remains debated.
L. R. Tesser   +6 more
wiley   +1 more source

Plant species richness response to atmospheric nitrogen deposition across bedrock types in the United States and Czechia

open access: yesEcosphere, Volume 17, Issue 5, May 2026.
Abstract Atmospheric nitrogen (N) deposition leads to many changes in terrestrial and aquatic ecosystems, affecting ecosystem processes and species composition. Terrestrial vegetation often shifts from being N‐limited to light‐limited and becomes dominated by a few fast‐growing strong competitors and generalist species.
Tomáš Chuman, Christopher M. Clark
wiley   +1 more source

Hydrogeological characterisation and prospect of basement Aquifers of Ibarapa region, southwestern Nigeria

open access: yesApplied Water Science, 2018
The present study involved the use of 82 geo-electric soundings, and the measurement of well inventory and conduct of yield tests in 19 wells across the various bedrock terrains of Ibarapa region of southwestern Nigeria. The aim is to proffer solution to
Olanrewaju Akinfemiwa Akanbi
doaj   +1 more source

Block‐in‐Matrix Deformation and Veining in Alpine Subducted Oceanic Metasediments at Blueschist Facies Conditions

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.
Abstract In subduction zones, the locked seismogenic zone is bordered by an upper and a lower transition zone. In these transition zones, deformation is primarily accommodated by an interplay of diffuse viscous deformation within a weak matrix and brittle deformation in stiffer bands and blocks.
L. Casoli, A. Petroccia, F. Giuntoli
wiley   +1 more source

Unraveling the Mystery of Melt Migration in Migmatites: From Channeling Instability to Pattern Formation

open access: yesJournal of Geophysical Research: Solid Earth, Volume 131, Issue 5, May 2026.
Abstract Melt migration in partially molten rocks is commonly described by porous flow models controlled by the hydro‐mechanical compaction length, which effectively explains melt extraction at mid‐ocean ridges. However, this framework cannot account for the paradoxical accumulation of small melt fractions into rhythmic leucosome–melanosome bands in ...
Qingpei Sun   +3 more
wiley   +1 more source

Multiphase boudinage: a case study of amphibolites in marble in the Naxos migmatite core [PDF]

open access: yesSolid Earth, 2018
In multiply deformed terrains multiphase boudinage is common, but identification and analysis of these is difficult. Here we present an analysis of multiphase boudinage and fold structures in deformed amphibolite layers in marble from the migmatitic ...
S. Virgo, C. von Hagke, J. L. Urai
doaj   +1 more source

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