QAP ternary diagram plot of mineral point count analyses by Wagener (1965) of 40 samples collected from the East Farrington pluton (including data from the Farrington quadrangle). According to IUGS classification, the rocks plot mainly within the granite

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Zefg - East Farrington pluton
QAP ternary diagram plot of mineral point count
analyses by Wagener (1965) of 40 samples
collected from the East Farrington pluton
(including data from the Farrington quadrangle).
According to IUGS classification, the rocks plot
mainly within the granite field. Normalized whole
rock analysis from a sample (CH-5004) collected
during the current mapping from Pritchards Mill
Creek near the southern tip of University Lake
indicates a granodiorite composition.
Zgr - Granite of the Chapel Hill pluton
QAP ternary diagram plot of normalized whole rock
analysis from sample CH-57. Sample collected
from new building construction on UNC-Chapel Hill
campus.
Zgd Granodiorite
Whole rock analysis from sample CH-150, collected
from the Duke Forest area, and sample CH-2401,
collected from outcrop located east of Boshamer
Stadium on UNC campus, indicate a granodiorite
composition.
Whole rock analysis from sample CH-880 collected
from Morgan Creek approximately 2000 feet up
stream from University Lake indicates an quartz
monzodiorite/granodiorite composition.
Zdi Diorite
Whole rock chemical analyses from rock samples of
Bland, 1972 which were collected from his diorite
bodies within the Meadow Flats pluton were
normalized and plotted on QAP diagrams for this
study. According to IUGS nomenclature, the rocks
plot as quartz monzodiorite and quartz diorite.
Zqmd Quartz monzodiorite
Zqmd - Quartz monzodiorite The rocks within the
map areas designated as quartz monzodiorite
appear similar to the typical diorite. Rare
pinkish alkali feldspar is present in some
samples (specifically on the south side of
Blackwood Mountain). Whole rock chemical
analyses from 9 rock samples of Bland, 1972 which
were collected from his granodiorite bodies
within the Meadow Flats pluton were normalized
and plotted on QAP diagrams for this study.
According to IUGS nomenclature, the rocks
previously categorized as granodiorite plot as
quartz monzodiorite.
Zdi-fine Fine-grained Diorite
Whole rock analysis from a sample collected near
the intersection of NC Hwy 86 (Airport Road) and
Summerview Drive (CH-746) indicates a quartz
monzodiorite composition.
Zgb Gabbro
Whole rock chemical analyses from rock samples of
Bland, 1972 which were collected from his gabbros
bodies within the Meadow Flats pluton were
normalized and plotted on QAP and Pl/Pyx/Ol
diagrams for this study. According to IUGS
nomenclature, the composition of the rocks vary
from gabbro, quartz gabbro, and quartz
monzogabbro.
Zum Ultramafic
Whole rock analysis from a sample collected east
of Iron Mine Hill (CH-2027) plots within the
olivine-clinopyroxenite field on a Ol/Opx/Cpx
ternary diagram.