Results 71 to 80 of about 7,253 (231)

Geophysical and geomechanical characteristics of Gabbro from locality Pantelej, Macedonia [PDF]

open access: yes, 2016
The paper represents the geophysical and geomechanical characteristics of gabbro from the locality Pantelej in Macedonia. This gabbro is wide spread and it intruded in Paleozoic chlorite - sericite and graphite schists.
Delipetrev, Marjan   +5 more
core  

The Pobei Cu-Ni and Fe ore deposits in NW China are comagmatic evolution products: evidence from ore microscopy, zircon U-Pb chronology and geochemistry

open access: yesGeologica Acta, 2017
The Pobei mafic-ultramafic complex in northwestern China comprises magmatic Cu-Ni sulfide ore deposits coexisting with Fe-Ti oxide deposits. The Poshi, Poyi, and Podong ultramafic intrusions host the Cu-Ni ore. The ultramafic intrusions experienced four
Y.G. LIU   +4 more
doaj  

U–Pb geochronology and Hf isotope data from the Late Cretaceous Mawat ophiolite, NE Iraq

open access: yesHeliyon, 2019
The Mawat ophiolite, NE Iraq, is one of the Neo-Tethyan ophiolites within the Iraqi Zagros orogen. It consists of many metre-to kilometre-sized tectonic slices of serpentinized dunite, peridotite, gabbro, basaltic rocks and associated oceanic ...
Heider Al Humadi   +6 more
doaj   +1 more source

Onshore Wind Energy Development Causes Localized but Lasting Shifts in Plant Community Composition and Function

open access: yesEcology and Evolution, Volume 16, Issue 7, July 2026.
The effects of wind power plants on surrounding vegetation remain poorly understood. Vegetation surveys at three Norwegian wind power plants commissioned 4, 12, and 19 years ago showed that roads caused shifts in plant functional strategies toward species with ruderal strategies.
Lukas Seifert   +5 more
wiley   +1 more source

Porosity and Permeability of Very Young Oceanic Crust: Implications for Hydrothermal Circulation at Mid‐Ocean Ridges

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract Porosity and permeability are crucial factors influencing hydrothermal flow in the oceanic crust. This paper provides a comprehensive overview of measurements and estimates of porosity and permeability. Although scientific drilling projects have yielded direct measurements of these properties, available data remain limited, particularly for ...
Weihao Lyu   +4 more
wiley   +1 more source

Gabbros from IODP Site 1256, equatorial Pacific: Insight into axial magma chamber processes at fast spreading ocean ridges

open access: yesGeochemistry, Geophysics, Geosystems, 2011
The ODP/IODP multileg campaign at ODP Site 1256 (Cocos plate, eastern equatorial Pacific) provides the first continuous in situ sampling of fast spreading ocean crust from the extrusive lavas, through the sheeted dikes and down into the uppermost gabbros.
J. Koepke   +6 more
doaj   +1 more source

Active Hydrothermal Hydrogen Emissions in Continental Collision Settings: Insights From the Southeastern Tibetan Plateau

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract Natural hydrogen (H2) is a promising clean energy resource and a significant component of geothermal gases, yet its origins and release mechanisms remain poorly constrained. Here, we present geochemical and isotopic data (CO2, N2, Ar, H2, He, CH4, 3He/4He, δ13C‐CO2, and δ13C‐CH4) for hydrothermal gases from the Changning–Menglian suture (CMS),
Xuelian Huang   +10 more
wiley   +1 more source

Odd Blobs in Fine-Grained Gabbro [PDF]

open access: yes, 2019
Clayters Beach - Granite-gabbro mixing zone.https://digitalmaine.com/mgs_geologic_field_photos/6164/thumbnail ...
Marvinney, Robert G
core  

Investigating the Magma Reservoir of Taupō Volcano Using Receiver Functions

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract The Taupō Volcanic Zone (TVZ), one of the most active volcanic systems globally, poses significant hazards. To improve our understanding of crustal structure and implications for hazards, we apply P‐to‐S receiver function analysis, supplemented by S‐to‐P for validation, to temporary seismic network data surrounding Taupō volcano. This provides
William Buffett   +5 more
wiley   +1 more source

Two types of gabbroic xenoliths from rhyolite dominated Niijima volcano, northern part of Izu-Bonin arc: petrological and geochemical constraints

open access: yesOpen Geosciences, 2017
We examined the petrography, petrology, and geochemistry of two types of gabbroic xenoliths (A- and B-type xenoliths) in olivine basalt and biotite rhyolite units among the dominantly rhyolitic rocks in Niijima volcano, northern Izu-Bonin volcanic arc ...
Arakawa Yoji   +5 more
doaj   +1 more source

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