Dedham North Granite has a compositionally highly variable suite ranging from leucogranites to granodiorites, tonalites, and quartz diorite.
12.
Foliated quartz diorite occur at Baie de St Brieuc, at Coutances, La Hague, Guernsey, Alderney and Sark.
13.
The upper South Fork Sultan River flows through a classic U-shaped valley cut by a glacier through Quartz diorite.
14.
A large stock, composed of pyroxene diorite and biotite-pyroxene quartz diorite, forms the present base of Coquihalla Mountain.
15.
Different rock composition zones occur, with monzogranite found at the centre, quartz diorite at the edge and granodiorite in intermediate parts.
16.
The gold occurrences in the schist, mafic unit, and sediments have much higher silver contents than the deposits in the quartz diorite.
17.
In southcentral Wyoming province there is a 2, 170 ?8-million-year-old quartz diorite dike of Wind River Range.
18.
However the current IUGS classification defines tonalite as having greater than 20 % quartz, while quartz diorite varies its quartz content from 5 to 20 %.
19.
The Northern part of Con Dao Island composed of quartz diorite and granite-granodiorit of late Mesozoic-early Cenozoic age, and is partially covered by Quaternary marine sediments.
20.
These rocks consist of gneiss, and gneissic diorite and quartz diorite, intruded by irregular bodies of equigranular granitic rocks, predominantly quartz diorite and granodiorite, with accompanying pegmatite and aplite.
