Results 31 to 40 of about 2,816 (163)

PETROGENETIC MODELING OF SOME GRANITIC MASSES IN THE CENTRAL EASTERN DESERT, EGYPT [PDF]

open access: yesDelta Journal of Science, 2007
Three granitic masses, namely Gabal Dellihimmi (140 km2), Gabal Abu Tiyur (30 km2) and Gabal Um Shaddad (17 km2) are located in the central Eastern Desert, intruded older metavolcanics and metasediments.
A.I. Ragab   +4 more
doaj   +1 more source

Statistical design applied to hydric property behaviour for monitoring granite consolidation and/or water-repellent treatments

open access: yesMateriales de Construccion, 2006
The suitability of granite conservation treatments (consolidation and/or water-repellency) wide/y used to protect heritage structures was evaluated on the basis of the changes occurring in the intrinsic characteristics of the stone (imbibition capacity ...
A. C. Íñigo   +2 more
doaj   +1 more source

Determination of trace element profiles in coarse-grained minerals by external millibeam PIXE - A schorl tourmaline study [PDF]

open access: yesBulletin of the Geological Society of Finland, 1995
The thick-target PIXE technique was applied to direct analysis of trace elements in tourmaline minerals. Analyses of these minerals with conventional wet-chemical methods are difficult and time consuming.
A. Lindroos   +4 more
doaj   +1 more source

Geology and geochemistry of the Redrock Granite and anorthosite xenoliths (Proterozoic) in the northern Burro Mountains, Grant County, New Mexico, USA [PDF]

open access: yesBulletin of the Geological Society of Finland, 2002
Mineral ages from the A-type granites and anorthosite xenoliths in the Redrock area in the northwestern Burro Mountains in southwestern New Mexico cluster around ~1220–1225 Ma and provide yet another example of bimodal igneous activity during this time ...
V.T. McLemore   +5 more
doaj   +1 more source

Mafic-silicic magma interaction in the layered 1.87 Ga Soukkio Complex in Mäntsälä, southern Finland [PDF]

open access: yesBulletin of the Geological Society of Finland, 2002
The Svecofennian layered Soukkio Complex (1.87 Ga) in Mäntsälä, southern Finland, consists of layered tholeiitic gabbro and porphyritic calc-alkaline monzonite, quartz monzonite and granite, mingled together.
T.T. Eerola
doaj   +1 more source

The Orivesi granite batholith, Southern Central Finland - characteristics and emplacement [PDF]

open access: yesBulletin of the Geological Society of Finland, 1996
The Orivesi granite batholith is situated in an E-W trending belt of granite intrusions along the southern margin of the Central Finland Granitoid Complex (CFGC).
O. Selonen, C. Ehlers
doaj   +1 more source

Magnetic mineralogy of Variscan granites from northern Portugal: an approach to their petrogenesis and metallogenic potential

open access: yesGeologica Acta, 2020
Northern Portugal is characterized by the occurrence of numerous W hydrothermal deposits spatially associated with granites. The primary goal of this work is to establish a relationship between the magnetic behavior of the granites and the redox ...
C. Cruz, H. Sant’Ovaia, F. Noronha
doaj   +1 more source

Petrogenesis and Tectonic Implication of Jurassic Granites in Central Guangdong, SE China: Constraints from Zircon U-Pb-Hf-O and Whole-Rock Geochemical and Sr-Nd Isotopic Data [PDF]

open access: yesLithosphere
The origin and tectonic regime responsible for the inland Jurassic granites in Southeast (SE) China remain controversial. This study presents zircon secondary ion mass spectrometry (SIMS) U-Pb ages, in situ zircon Hf-O isotopes, and whole-rock ...
Zhiguang Lai   +3 more
doaj   +1 more source

The Proterozoic granitoids of Finland: Granite types, metallogeny and relation to crustal evolution [PDF]

open access: yesBulletin of the Geological Society of Finland, 1986
The granitoids are divided into four main groups: synkinematic (1860‒1930 Ma, most commonly 1870‒1890 Ma), late-kinematic (1800‒1850 Ma) and postkinematic (ca. 1800 Ma) Svecokarelian granitoids, and anorogenic rapakivi granites (1540‒1700 Ma).
P.A. Nurmi, I. Haapala
doaj   +1 more source

The Rio Dourado Intrusive Suite - 1.88 Ga A-type Granite - Southeastern Amazonian Craton - Mato Grosso - Brazil [PDF]

open access: yesGeologia USP. Série Científica, 2011
The Rio Dourado Intrusive Suite (RDIS) is composed of granitic rocks which are exposed in the southeastern AmazonCraton, Central Amazon Province. These granites intruded into the Paleoproterozoic granites of the Vila Rica IntrusiveSuite.
Márcia Aparecida de Sant’Ana Barros   +6 more
doaj  

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