Results 21 to 30 of about 1,087 (206)

Source areas and geodynamic settings of cenozoic deposits in the West Sakhalin terrane based on the results of study of heavy detrital minerals

open access: yesВестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле, 2019
The paper describes the obtained data on content, the nature of distribution and composition of heavy detrital minerals from Cenozoic sandstones rocks in the West Sakhalin terrane.
Малиновский А.И.
doaj   +1 more source

Activation of Ad Damm shear zone, western Saudi Arabian margin, and its relation to the Red Sea rift system

open access: yesOpen Geosciences, 2022
The Ad Damm shear zone (ADSZ) is a major mylonitic right-lateral structure that bounds the Jeddah terrane to the north from the Asir terrane to the south.
Samkari Abdulaziz   +2 more
doaj   +1 more source

Status of thermobarometry in granitic batholiths

open access: yes, 1996
:Most granitic batholiths contain plutons which are composed of low-variance mineral assemblages amenable to quantification of the P– conditions that characterise emplacement.
J. Lawford Anderson
core   +2 more sources

Neoproterozoic magmatic evolution of the southern Ouaddaï Massif (Chad)

open access: yesBSGF - Earth Sciences Bulletin, 2020
This paper presents new petrological, geochemical, isotopic (Nd) and geochronological data on magmatic rocks from the poorly known southern Ouaddaï massif, located at the southern edge of the so-called Saharan metacraton. This area is made of greenschist
Djerossem Félix   +5 more
doaj   +1 more source

The off-crust origin of granite batholiths

open access: yes, 2014
Granitod batholiths of I-type features (mostly granodiorites and tonalites), and particularly those forming the large plutonic associations of active continental margins and intracontinental collisional belts, represent the most outstanding magmatic ...
Castro, Antonio
core   +1 more source

THERMOCHRONOLOGY OF GRANITOID BATHOLITHS AND THEIR TRANSFORMATION INTO METAMORPHIC CORE COMPLEXES (EXAMPLE OF SONG‐CHAI MASSIF, NORTHERN VIETNAM)

open access: yesГеодинамика и тектонофизика, 2019
Based on the reconstruction of the thermal evolution of granitoid batholith, represented by the Song‐Chai gneiss‐granite massif (Northern Vietnam), the long‐term existence of granitoid magma at deep levels of the Earth's crust (H≥25 km, Δt~20–50 Ma) is ...
A. G. Vladimirov   +8 more
doaj   +1 more source

Evolution of arc magmatic cycles from the Carboniferous to the Early Cretaceous in the western paleomargin of Gondwana, north of the Andes

open access: yesBoletín Geológico, 2022
This work presents a considerable volume of new and compiled data indicating that arc magmatism in the western paleomargin of Gondwana began in the Carboniferous and continued during the Permian and Early Triassic.
Gabriel Rodríguez García   +4 more
doaj   +1 more source

Charnockites: Petrologic and phase equilibria characterization of some global examples

open access: yesGeosystems and Geoenvironment, 2023
Charnockites (orthopyroxene-bearing granitoids) constitute one of the major components in many Precambrian high-grade metamorphic terranes of the world.
Toshiaki Tsunogae   +2 more
doaj   +1 more source

The gravity field and gravity data reduction across the continental area of Nigeria

open access: yesGeodesy and Geodynamics, 2023
This research presents the variation of the gravity field and associated gravity field components over the continental area of Nigeria to provide data for geoscience research, geodetic and engineering works, aerodynamic studies and deep crustal ...
Oluwatimilehin B. Balogun   +1 more
doaj   +1 more source

Geochemical analysis of samples from the Chinamora and Murehwa batholiths in Zimbabwe (Table1)

open access: yes, 2003
Geochemical analysis of samples from the Chinamora and Murehwa batholiths in Zimbabwe ...
Jelsma, Hielke A   +1 more
core   +1 more source

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