Results 1 to 10 of about 298,753 (226)

Radiological risk assessment and geochemical signatures of calc-alkaline bostonite dikes [PDF]

Scientific Reports
The bostonite dikes in the studied area of Egypt are one of the most radioactive felsic intrusions found in the South Eastern Desert due to their elevated levels of natural occurring radionuclides and the radiological hazards associated with them.
Ahmed E. Abdel Gawad, Reham M. Abd El Rahman, Mohamed Y. Hanfi   +2 more
doaj   +4 more sources

Magmatic sulfides in high-potassium calc-alkaline to shoshonitic and alkaline rocks [PDF]

Solid Earth, 2020
We investigate the occurrence and chemistry of magmatic sulfides and their chalcophile metal cargo behaviour during the evolution of compositionally different magmas from diverse geodynamic settings both in mineralised and barren systems.
A. A. Georgatou, M. Chiaradia
doaj   +1 more source

Petrography, geochemistry and petrogenesis of high-silica Adakitic rocks from Bayram Abad area in the northwest Neyshabour (Northeast of Iran) [PDF]

پترولوژی, 2021
The volcanic rocks of Bayram Abad area, located 12 km northwest of Neyshabour, are dominated by the Paleogene units composing of dacite and andesite rocks.
mohammad ebrahim fazel valipour
doaj   +1 more source

Multiple Rodingitization Stages in Alkaline, Tholeiitic, and Calc-Alkaline Basaltic Dikes Intruding Exhumed Serpentinized Tethyan Mantle from Evia Island, Greece

Lithosphere, 2022
In Pagondas and Kimi areas, central Evia Island, Greece, variably serpentinized ultramafic rocks of an ophiolitic origin are crosscut by rodingite dikes.
Christos Karkalis, Andreas Magganas, Petros Koutsovitis, Panagiotis Pomonis, Theodoros Ntaflos   +4 more
doaj   +1 more source

Low–Ti Continental Tholeiite Origin of Magmas With Calc‐Alkaline Signature in Transcurrent Settings: The Mississippian Matachel Volcanic Field (SW Iberian Massif)

Geochemistry, Geophysics, Geosystems, 2023
In the Mississippian Matachel small volcanic field of the Ossa‐Morena Zone (southern Iberian Massif) outpoured basic‐intermediate lavas exhibit geochemical characteristics of Low‐Ti continental tholeiites and calc‐alkaline lavas.
F. Sarrionandia, J. Errandonea‐Martin, E. Larrondo, M. Carracedo‐Sánchez, B. Ábalos, J. I. Gil Ibarguchi   +5 more
doaj   +1 more source

Geology, petrography, alteration, and geochemistry of the Shahrab igneous rock, Central Iran

Geology, Ecology, and Landscapes, 2021
Eocene to Quaternary calc-alkaline volcanic and intrusive rocks are exposed in Shahrab area in the Urumieh-Dokhtar magmatic belt in the Central Iran structural zone.
Kaveh Pazand, Moslem Aghaei Kerigh, Mohammad Reza Rezvanianzadeh   +2 more
doaj   +1 more source

Evolution of slab tearing-related high potassium volcanism: Petrogenetic data from the Emirdağ and İscehisar volcanic units

Bulletin of the Mineral Research and Exploration, 2020
Volcanism that has been active since the early Miocene along a N-S trending line from Eskişehir to Isparta displays calc-alkaline and alkaline character and is closely associated with slab tearing processes.
Selin Bi̇lgi̇ç Gençer, Sibel Tatar Erkül, Fuat Erkül   +2 more
doaj   +1 more source

Study of origin and petrogenesis of granitoid bodies of Soursat complex (Northwest of Takab): Whole- rock ‎geochemical and Sr-Nd isotopic evidences [PDF]

پترولوژی, 2019
The plutonic bodies in the Soursat complex are parts of the widespread plutonic bodies in the Sanandaj- Sirjan zone. Based on field observations and microscopic studies, the study area is dominated by hornblende gabbro, quartz diorite, monzodiorite ...
Soraya Dadfar, Farhad Aliani, Ali Akbar Baharifar, Mohammad Hossein Zarrinkoub   +3 more
doaj   +1 more source

Geochemical features of granitic rocks using x-ray spectral fluorescence in the Miass region, Southern Ural

RUDN Journal of Engineering Research, 2023
The goals of the research are the geochemistry and identification of granite rocks. The granitic rocks are part of the Syrostan massive, which is located in Southern Ural.
Mohammed Abdalla Elsharif Ibrahim, Vladimir N. Kuleshov, Alexander E. Kotelnikov, Alexey F. Georgievskiy, Samia Abdelrahman Ibrahim   +4 more
doaj   +1 more source

Fingerprint of magma mixture in the leucogranites: Spectroscopic and petrochemical approach, Kalebalta-Central Anatolia, Türkiye

Open Geosciences, 2023
Leucogranites of Kalebalta in Central Anatolia are composed of plagioclase, quartz, orthoclase, and biotite and contains mafic microgranular enclaves (MME) in sizes ranging from few cm to 70 cm.
Güllü Bahattin, Akşit Asuman
doaj   +1 more source