Results 91 to 100 of about 8,479 (222)

Minzeralogy, geochemistry and genesis of the Gozaldarreh iron skarn deposit, southeast Zanjan

open access: yesJournal of Economic Geology, 2019
Introduction The Zanjan area hosts several iron deposits with small reserves which are currently active. This extended abstract describes the geology, mineralogy and geochemistry of the Gozaldarreh iron deposit located 44 km south of Zanjan.
Seyed Javad Moghaddasi   +2 more
doaj   +1 more source

Geochemistry of I-type Volcanic Arc Granitoid From Tanggamus Regency, Southern Sumatra

open access: yesJournal of Mathematical and Fundamental Sciences
Granitoid intrusion of several provinces on Sumatra is correlated with Southeast Asia tectonics that have occurred since the Permian. Granites from several volcanic arc provinces are located along the western part of Sumatra Island and are found near ...
Ronaldo Irzon   +4 more
doaj   +1 more source

ORIGIN AND PETROLOGY OF EKECİKDAĞ GRANITOID IN WESTERN CENTRAL ANATOLIAN CRYSTALLINE MASSIF

open access: yes, 1993
A belt formed by a number of granitoid intrusions is situated at the western part of the Central Anatolian Crystalline Massif. One of the granitoid intrusion at the southwest of the belt crops out between Aksaray and Ortaköy and is called Ekecikdağ ...
AKIMAN, Orhan, GÖNCÜOĞLU, M. Cemal
core  

Weathering trends unveil K-metasomatism in bundelkhand granitoids: Resolving the pink–grey granitoid paradox

open access: yesLithos
The petrogenetic puzzle of pink coloration of granitoid rocks is rooted on the debate between primary magmatic versus metasomatic origin of K-feldspar, which, in turn, has persisted due to difficulties in distinguishing these processes through conventional petrographic methods.
Shiba Acharya   +4 more
openaire   +1 more source

On the Origin of Certain Granitoid Rocks [PDF]

open access: yesNature, 1879
DR. CALLAWAY'S interesting letter with the above heading in NATURE (vol. xx. p. 219) tempts me to send you the following paragraph from my paper in the Quart. Journ. Geolog. Soc. for May, p. 286, an which the halleflintas of the Arvonian there mentioned are first described:—
openaire   +2 more sources

Granitoid intrusion into the VGP News

open access: yesEos, Transactions American Geophysical Union, 1990
The VGP News is intended to stimulate fruitful thought in important areas of volcanism, petrology, and geochemistry. To achieve this aim, the February and May editions of VGP News are dedicated to a two‐part debate on the origin of anatectic granitoids.
openaire   +1 more source

Petrographical, geochemi?cal and petrological investigation of the mavri?yas (Çaykara-Trabzon) granitoid and surrounding rocks

open access: yes, 2017
YÖK Tez No: 467793Çaykara (Trabzon) yöresinde yer alan Mavriyas Granitoyidi'nin ve çevre kayaçlarının petrografik, jeokimyasal ve petrolojik özelliklerinin incelenmesini konu alan bu çalışmada Mavriyas Granitoyidi'nin gelişimi ortaya konularak, kökeni ...
Dündar, Buket
core  

Granitoid plutonism in the Caledonian orogen of Europe

open access: yes, 1988
Granitoid plutonism is a feature of all major segments of the Caledonian orogen in NW Europe and Greenland. Available data on geological setting, age and composition are presented for each segment and are collated for use as the basis for a regional and ...
Stephens, W. E.   +1 more
core   +1 more source

Radiological hazards assessment associated with granitoid rocks in Egypt

open access: yesNuclear Engineering and Technology
The present study aimed to assess the radioactive hazards associated with the application of granitoid rocks in building materials. An HPGe spectrometer was used to detect the levels of the radioactive elements uranium-238, thorium-232, and potassium-40 ...
Ahmed E. Abdel Gawad   +3 more
doaj   +1 more source

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