tonalite

In the lower units, tonalite and ilmenite are also found.

A greater amount of plagioclase would designate the rock as tonalite.

In older references tonalite is sometimes used as a synonym for quartz diorite.

It is made of granite, granodiorite and tonalite.

It is also found in welded tuffs, granodiorite, granite and tonalite.

These are characterised by soils varying from thick peat to bare granite and tonalite.

Experimental data show that extensive partial melting of the tonalite leaves an anorthositic residue.

The predominate rock type is a white, coarse-grained, foliated hornblende tonalite.

The soil is composed of fertile weathered gneiss, tonalite, and phyllite.

Granodiorite, tonalite and diorite are most common intrusive rocks found in continental arc.

It is paved with tonalite plates.

This intrusion is known as Federal Golf Course Tonalite.

The tonalite suites were predominantly synvolcanic.

Minerals in the tonalite are quartz, plagioclase, alkali feldspar and hornblende.

The complex is emplaced into early gneissic tonalite and is contemporaneous with late granitoids.

The mountain made of Cretaceous Orthogneiss, and Tonalite.

The protoliths of these rocks were most likely a basalt, komatiite, and chert assemblage, or tonalite.

The major deformation event that created the gneiss from tonalite occurred before diorite inclusions, at a time between 3.698 and 3.659 billion years ago.

From field relationships, the oldest rock is a granodiorite to tonalite orthogneiss, with a zircon crystallization age of 3254+13-6 Ma.

Slab-sample studies of the tonalite indicate the 3.1 Ga age is a metamorphic one, and that the source material had a pre-history at that time.

Subsequent regional vertical flattening and horizontal extension are dated at 2708 ± 2 Ma by syntectonic tonalite sheets.

Andesine in tonalite contains abundant drop-like quartz inclusions.

The tonalite has not been radiometrically dated; however, an Ordovician date has been reported for the gabbro.

The most common rock types in plutons are granite, granodiorite, tonalite, monzonite, and quartz diorite.

It is a variety of tonalite in which the plagioclase is mostly in the form of oligoclase.