granodiorite


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granodiorite

[¦gra·nō′dī·ə‚rīt]
(petrology)
A visibly crystalline plutonic rock composed chiefly of sodic plagioclase, alkali feldspar, quartz, and subordinate dark-colored minerals.
References in periodicals archive ?
Those authors divided the plutonic rocks into the Big Brook and Marble Mountain plutons, of mainly granodiorite composition, and the West Bay Pluton, composed of coarse-grained monzogranite.
The Vlc-2 granodiorite was selected for the present study because of its apparent relationship to the still undated Pilsotas phase of the Palaeoproterozoic charnockites and its simultaneously rather numerous similarities with the later granitoids.
Mineralization in the Moein Abad area occurred in the contact points of limestone metamorphosed with metavolcanic units or granodiorite.
One of the main rock groups encountered at this site is composed of igneous rocks such as granite, granodiorite, dolerite, basalt and rhyolite.
For samples 1 and 2 new isotopic ages determined in this work were used; for samples 3 and 4 (Lucy and Can-12) ages were taken from the Cuitaca Granodiorite published by Anderson and Silver (1977); for samples 5 and 6 (IntrCan and IntrMaria, respectively), the ages are from the Wodzicki (1995) work; and for sample 7 (Car-5) the age used was from the granodiorite reported by Valencia et al.
The two diamond holes, BNRC034 and BND004, both intersected gold mineralisation within a granodiorite intrusive with associated pervasive hematite-carbonate alteration, fine disseminated pyrite and shallow dipping east-west to northwestsoutheast striking quartz veins.
The lithology of intrusive rocks consists of gabbro, diorite, quartz diorite, granodiorite, biotite granite and leucogranite.
In the present study distinct intergrowths of titanite and ilmenite are described from a granodiorite dyke of the Krudum granite body in the Horni Slavkov-Krasno ore district.
The current drilling has resulted in the Hole PG09068A, which has intersected around 120m of veining and mineralisation within the West Granodiorite Zone target of the Rahill-Bonanza Property.
8 Ga) crust; sparse volcano-sedimentary sequences enclosed in coeval tonalite-trondhjemite plutonic suites; voluminous granodiorite, granite, and pyroxene-bearing plutons (<2.
The objective of the present study is to evaluate the modal and geochemical characteristics of the Ti-rich granodiorite porphyries from the northeastern margin of the Klenov massif.