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Petrogenesis and geodynamics of the Early Miocene Kashan granitoids in the central Urumieh-Dokhtar Magmatic Arc, Iran [PDF]

open access: yesScientific Reports
This study investigates the early Miocene granitoids (rhyolites, dacites, granodiorites, and diorites) from the Kashan area in the central Urumieh-Dokhtar Magmatic Arc of Iran, to constrain their sources and geodynamic processes. Zircon U–Pb ages, zircon
Caihua Kou, Hongrui Zhang, Mingyu Zhu
doaj   +2 more sources

U-Pb age of titanite from diorit of Osnytsky Block (Volyn Megablock of Ukrainian Shield)

open access: yesГеологія і корисні копалини Світового океану, 2023
The Osnytsky block is a constituent part of the Osnytsky-Mikashevytsky volcano-plutonic belt. The leading place in the geological structure of the Osnytsky block is occupied by the rock association, which includes a number of plutonic formations from ...
VYSOTSKY O.B.   +3 more
doaj   +2 more sources

MAFIC INCLUSIONS (SOBSKY COMPLEX, POLAR URAL): U‐Pb (SIMS) DATA [PDF]

open access: yesГеодинамика и тектонофизика, 2019
The rocks of the Sobsky complex, composing the bulk of the Sobsky batholith in the Polar Urals, contain mafic inclusions. The geological, petrographic and petro‐geochemical data show that the mafic inclusions of the Sobsky rocks belong to igneous ...
О. V. Udoratina   +3 more
doaj   +2 more sources

Petrogenesis and geodynamic implications of the Late Devonian dioritic and granitic intrusive rocks in the Dananhu Belt, Eastern Tianshan Orogenic Belt [PDF]

open access: yesHeliyon
The Late Devonian magmatism of the Dananhu arc belt in the Central Asian Orogenic Belt provides a critical geological record. This study provides new comprehensive geochronological, geochemical, and Sr–Nd isotopic data of granodioritic and dioritic ...
Zhen Qin   +3 more
doaj   +2 more sources

A Comparative Study on the Comminution Behavior of Diorite Rocks [PDF]

open access: yesHeliyon, 2021
Dans cet article, les facteurs qui affectent le comportement de fragmentation des roches dioritiques hétérogènes obtenues à partir de deux sites de carrière au Botswana ont été étudiés. Les roches diorites sont très abondantes au Botswana et elles sont de plus en plus considérées comme un matériau de construction alternatif relativement peu coûteux et ...
Gwiranai Danha   +2 more
exaly   +4 more sources

Magnetic Fabric and Paleomagnetic Analyses of the Zaghar and Tafresh Areas, Central Urumieh-Dokhtar Magmatic Arc, Iran

open access: yesGeosciences, 2023
Magnetic fabric, paleomagnetic, and petrophysical studies were conducted on rocks in the Tafresh area of the central Urumieh-Dokhtar magmatic arc in Iran.
Maryam Sheibi   +4 more
doaj   +2 more sources

The 3.5 Ga Siurua trondhjemite gneiss in the Archaean Pudasjärvi Granulite Belt, northern Finland [PDF]

open access: yesBulletin of the Geological Society of Finland, 2003
In the Archaean Pudasjärvi Complex the pyroxene-bearing rocks are considered to form a belt, the Pudasjärvi Granulite Belt (PGB). The major rock types of the PGB are meta-igneous mafic and felsic granulites, and trondhjemite gneisses Red alaskites, white
T. Mutanen, H. Huhma
doaj   +1 more source

Whole-rock geochemistry of some tonalite and high Mg/Fe gabbro, diorite, and granodiorite plutons (sanukitoid suites) in the Kuhmo district, eastern Finland [PDF]

open access: yesBulletin of the Geological Society of Finland, 2006
New whole-rock geochemical analyses (major and trace elements) of three tonalite plutons and high Mg/Fe granodiorites and diorites, termed sanukitoid suites, are presented from Neoarchaean Kuhmo district, eastern Finland.
A. Käpyaho
doaj   +1 more source

«The Great» dyke of the Bug area

open access: yesГеофизический журнал, 2019
New data of geophysical, geochemical and petrologic studies of the well-known elongated 35km long linear geological structure of predictable fault-dyke nature in crystalline basement of the west part of the Bug mining area (Middle Bug area, the Ukrainian
V. A. Entin   +7 more
doaj   +1 more source

Mask R-CNN for rock-forming minerals identification on petrography, case study at Monterado, West Kalimantan [PDF]

open access: yesE3S Web of Conferences, 2020
This paper explores the experiment of Deep Learning method using Mask Region-Convolutional Neural Network (Mask R-CNN) to identify rock-forming minerals on thin section images from petrographic observation in igneous rocks, which are plagioclase, quartz,
Iyas Muhammad Ridwan   +2 more
doaj   +1 more source

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