Results 1 to 10 of about 452 (179)

Petrology, Geochemistry and Mineral Chemistry of Neoproterozoic Granitoids, Wadi Zaghra, Southern Sinai, Egypt [PDF]

open access: yesDelta Journal of Science, 2022
Wadi Zaghra granitoid intrusion is a part of the Neoproterozoic Pan-African basement cropping out in southern Sinai, Egypt. The intrusion comprises granodiorite, tonalite, monzogranites, syenogranite, and alkali feldspar granites with minor quartz ...
Mohamed F. Ghoneim   +4 more
doaj   +1 more source

Petrology and Zircon morphology of granitoid rocks at um Bogma Environs, south west Sinai, Egypt [PDF]

open access: yesDelta Journal of Science, 2023
This paper studies the morphology of zircon crystals as well as geological and petrographical characteristics of granitoid rocks at Um Bogma environs, south Sinai, Egypt to provide the rock nomenclatures and to deduce their origin and magma types.
tarek hagag
doaj   +1 more source

Petrology, geochemistry and origin of Gapdan Granites (South east of Zahadan) [PDF]

open access: yesپترولوژی, 2018
The Gapdan granitoid is located in the southwestern margin of Zahedan granitoid and in the Sistan suture zone. The granitoid under study is composed of granite, monzogranite, granodiorite, pegmatite and diorite.
Habib Biabangard, Shararh Noori
doaj   +1 more source

Comparison of Granitoid Characteristics West Kalimantan and Karangsambung Based On Mineralogical And Geochemical Aspects

open access: yesJGEET: Journal of Geoscience, Engineering, Environment and Technology, 2021
Indonesia was included in the ring of fire so that it has various types of tectonic products, one of which is granitoid. Granitoid is  very complex rock and many are found in Indonesia. Some of them are found in West Kalimantan and Karangsambung.
Kevin Setyo Adi Nugroho   +2 more
doaj   +1 more source

Geothermobarometry of Sarmeshk granitoids in the Northwest of Sarduiyeh [PDF]

open access: yesپترولوژی, 2018
The Sarmeshk granitoid pluton is located in southeast of the Urumieh-Dokhtar magmatic zone in the Kerman province. Based on petrographic studies, the granitoid consist of three rock type of diorite, granodiorite and monzogranite. They are mainly composed
Asma Nazarinia   +3 more
doaj   +1 more source

Zircon U-Pb SHRIMP ages of the Demêni-Mocidade Domain, Roraima, southern Guiana Shield, Brazil: extension of the Uatumã Silicic Large Igneous Province

open access: yesJournal of the Geological Survey of Brazil, 2021
The Demêni-Mocidade domain (DMD) comprises a large area of granitoid rocks, located on the border between the states of Roraima and Amazonas, Brazil, within the inner part of the Ventuari-Tapajós Province of the Amazonian Craton, where large amounts of ...
Nelson Reis   +6 more
doaj   +1 more source

Mineralogy, geochemistry, tectonic environment and origin of granodiorite in the east of Bideshk (Urumieh-Dokhtar magmatic zone)

open access: yesJournal of Economic Geology, 2021
Introduction Granitoids are one of the most abundant and common igneous rocks in the continental crust and they formed the world's largest batholiths. They are widely distributed in Precambrian to Cenozoic orogenic belts (e.g., Raymond, 2002), but some ...
Iman Rahmani Moghaddam   +3 more
doaj   +1 more source

Environmental Effects of Volcanic Volatile Fluxes From Subaerial Large Igneous Provinces

open access: yesGeophysical Monograph Series, Page 103-116., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Tamsin A. Mather, Anja Schmidt
wiley  

+1 more source

Thermobarometry of Ca-amphibole in a Typical Low–temperature I-type Granite from Kashmar, Iran [PDF]

open access: yesFanāvarī-i āmūzish, 2007
The Kashmar granitoid (42.5 Ma) occurs in NE Central Iran Plate (CIP). It mainly includes felsic metaluminous (ASI ≤ 1) I–type granite and granodiorite plutons. Microprobe analyses show that the Kashmar amphiboles are low in Ti and (Na+K)A contents (all <
A. Soltani
doaj   +3 more sources

Petrography and geochemistry of igneous rocks and Sb and Au mineralization in Sefidsang and Dargiaban areas, southeastern Iran [PDF]

open access: yesپترولوژی, 2018
: The Sefidsang and Dargiaban areas are located in the Sistan suture zone. The geological units of the areas are flysch-like rocks, granitoid body, subvolcanic mass, acidic and intermediate dikes and recent deposit.
Mohammad Boomeri   +2 more
doaj   +1 more source

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