Results 101 to 110 of about 8,056 (240)

Comparison between natural radioactivity levels and geochemistry of some granitoids in western Turkey

, 2016
Granitoids commonly include K-feldspar, biotite and zircon, apatite, titanite, allanite, and xenotime crystals, which are known to contain common radioactive elements.
Boztosun, Ismail, Erkul, Sibel Tatar, Erkul, Fuat, Ozmen, Suleyman Fatih   +3 more
core   +1 more source

Сomposition and mineralogy of granitoids of the Ob-Zaisan folded region in the context of the prediction of groundwater radioactivity

Горные науки и технологии
The presented research is carried out in continuation of the works connected with studying the nature of radioactivity of drainage waters of quarries of Novosibirsk region, performed by the Laboratory of Hydrogeology of Sedimentary Basins of Siberia ...
Vasiliy P. Sukhorukov , Anna F. Sukhorukova, Dmitry A. Novikov, Anton S. Derkachev   +3 more
doaj   +1 more source

Radon‐222 as an Effective Tracer to Distinguish Groundwater Circulation Patterns in the Deep Fault‐Controlled Geothermal System

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract Groundwater flow regulated by deep faults remains challenging to trace due to structural complexity. This study applies the noble gas tracer 222Rn combined with hydrochemistry and stable isotopes (δ2H, δ18O) to distinguish circulation patterns of geothermal springs along a major fault in the Tibetan Plateau.
Xiaoyan Shi, Xingxing Kuang, Meizhuang Zhu, Linfeng Fan, Xinkang Wang, Gexi Zheng, Yinlei Hao, Chunmiao Zheng   +7 more
wiley   +1 more source

Geochronology of Portuguese granitoids: a contribution [PDF]

, 1983
Geochronological data (Rb-Sr method, \87Rb = 1.42 x 10"n/y) relative to eight granitoid bodies, of which five form part of a zoned pluton (Castro Daire area, Northern Portugal), show this pluton as a multi-pulse intrusion and define four age groups (ca ...
Serrano Pinto, M.
core  

Variscan collisional magmatism and deformation in NW Iberia: Constraints from U-Pb geochronology of granitoids

, 2000
U–Pb geochronology of Variscan granitoid rocks from the West Asturian Leonese Zone of the NW Iberian belt documents the episodic nature of magmatism in this section of the western European Variscides.
Jenner, G.A., Fernández Suárez, Javier, Dunning, G.R., Gutiérrez-Alonso, G   +3 more
core   +1 more source

Highlights on Geochemical Changes in Archaean Granitoids and Their Implications for Early Earth Geodynamics

Geosciences, 2018
The Archaean (4.0–2.5 Ga) continental crust is mainly composed of granitoids, whose geochemical characteristics are a function of their formation mechanisms and components, as well as physical conditions of their source.
Jaana Halla
doaj   +1 more source

Zircon in granitoids from Sinai, Egypt and its genetic significance [PDF]

, 1985
The granitic plutonism in the area around Wadi El-Sheikh, southwestern Sinai, Egypt is mainly represented by the Older and Younger Granitoid Rocks.
Salem Abdel-Karim Ahmed, Heikal Mohamed A., El-Sheshtawi Youssef A.   +2 more
core  

Sumatran granitoids and their relationship to southeast Asian terranes

, 1995
Three subparallel, N-S-trending granitoid provinces occur in Southeast Asia: the Eastern Granitoid Province of peninsular Malaysia; the Central Granitoid Province, extending from northwestern Thailand to the western part of peninsular Malaysia and to the
Gasparon, M (15476894), Varne, R (15476897)   +1 more
core  

The petrochemical characteristics of the Hercynian granitoids in Tianshan and its geodynamic implications

, 2003
Four genectic types of granitoids, i. e. mantle-derived type (M-type), syntexis type (SY-type), trasformation type [T-type, including migmatic (MT), peraluminous (PT) and K-rich (KT) subtypes], and A-type were classified in the Hercynian granitoids in ...
Bao, JX, Chen, YJ, Chen, HY, Liu, YL, Zhang, ZJ   +4 more
core  

Types and genesis of the enclaves in Central Anatolian granitoids

, 1999
Central Anatolian granitoids range from tonalite-monzonite, through granodiorite, to alkali feldspar granite in composition, and typically have angular to oval-shaped mafic magmatic and metamorphic enclaves.
Güleç, Nilgün Türkan, Gulec, N, Kadioglu, Yk   +2 more
core   +1 more source