Granitic plutons in the Meguma Terrane may be broadly divided into two suites:(1) an areally
predominant, cogenetic suite of peraluminous granitoid rocks (tonalite-leucogranite); and (2) …

Zircon separated from six rocks whose compositions spanned the range of differentiation in
the Boulder Creek batholith yielded a “discordia” age of emplacement of 1725 my, close to …

Archean supracrustal sequences of pelitic, quartzitic, calcareous and mafic compositions in
the central Laramie Mountains, Wyoming, have been affected by two metamorphic events: a …

U-Pb isotopic analyses of monazite and zircon from six granitic plutons in the Meguma
Terrane yield nearly concordant ages of Ma, interpreted as the time of intrusion. U-Pb …

Pb isotopic compositions of leached feldspars from twenty-three plutons in Cape Breton
Island can be divided into two groups: anorthosite, syenite, and granite in the Blair River …

Mineral ages have been measured by the K‐A, Rb‐Sr, U‐Pb, and Th‐Pb methods on
samples of granite and pegmatite from the Cutler batholith, Ontario. The pegmatites crosscut …

Nd isotopic data from the South Mountain batholith show that its peraluminous granitic rocks
have considerably higher ϵ t Nd (t= 372 Ma) values (− 5.2 to− 1.4) than the extensive …

We report preliminary zircon U-Pb geochronological results from a suite of plutonic rocks
from the Peter Lake Domain along northern Reindeer Lake. The crystallization age of a …

Precise U–Pb monazite and 40Ar/39Ar hornblende ages have been obtained from three
locations in the high-grade Archean core of the Wind River Range, Wyoming. Monazites …

Abstract The U-Th-Pb systems of minerals and whole rocks from Hearst and Kapuskasing
mafic dykes of the eastern Superior Province, Canada, were investigated to determine their …