North Carolina Department of Environmental Quality
Policy and Innovation Group
Mary Penny Kelley, Senior Advisor - Policy and Innovation
Kenneth B. Taylor, State Geologist
CORRELATION
OF MAP UNITS
Late Paleozoic Intrusives
PPwg
PPg
PPfg
о
о
N
О
Ш
ГО
о.
Raleigh Terrane
metamorphosed sedimentary and igneous
rocks (stratigraphic relations uncertain)
INTRODUCTION AND PREVIOUS MAPPING
The northeastern quarter of the Vicksboro 7.5-minute quadrangle occurs along the boundary
between Warren County and Vance County, North Carolina, between the towns of Henderson
(Vance Co.) and Warrenton (Warren Co.). The area contains no numbered Interstate, US, or NC
highways. The northern part of the area is traversed from west to east by SR 1001, which is
known as Warrenton Road in Vance County, and as Dr. Martin Luther King, Jr. Blvd. in Warren
County. US Highway 401 lies just to the east of the area, running northeast from Louisburg in
Franklin County to Warrenton. NC Highway 39 lies to the southwest of the area, running
northwest from Louisburg to Henderson. Interstate Highway I-85 and US Highway 1 lie about
three miles to the west.
The area contains the unincorporated community of Cokesbury in Vance County, and in Warren
County, the populated places of Vicksboro and Axtell. It is a dominantly agricultural area, with
several large dairy farms.
The area is drained by the upper stretches of Fishing, Shocco, and Sandy Creeks, which are
major tributaries of the Tar River. Total relief is about 200 feet, with elevations of slightly less
than 300 feet above sea level where Shocco Creek leaves the eastern edge of the Vicksboro
Ouadrangle in the southeast, to over 500 feet above sea level along Allison Cooper Road (SR
1501 ) in the northwestern comer of the area.
The map area is underlain mainly by a diverse array of granitoid rocks, gneiss, and schist. Many
of the rocks are highly deformed, and the western portion of the area lies along a zone of
intense ductile shear attributed to the Lake Gordon fault. The granitoid rocks may belong to the
late Paleozoic (Alleghanian) Rolesville batholith. The granites are intrusive into gneisses and
schists of the Raleigh terrane, interpreted as an infrastructural component of a Neo proterozoic
volcanic arc (Hibbard and others, 2002).
Prior to this investigation, little geologic mapping had been undertaken in the quadrangle,
although it has been included in some regional and reconnaissance studies. Parker (1968)
defined the structural framework of the region. McDaniel (1980) mapped a multi-county region,
including Warren and Vance Counties, at a scale of 1:100,000. Farrar (1985a, b) mapped the
entire eastern Piedmont of North Carolina, defined map units for the region, and proposed a
model for the tectonic evolution of the region. Sacks (1996a, b, c, d) mapped a strip of four 7.5-
minute quadrangles along the Virginia-North Carolina border, along strike to the north-northeast.
Adjacent to the field area, 1:24, 000-scale mapping has been done for the Middleburg
Ouadrangle to the north (Stoddard and others, 2016). Mapping of the Afton Ouadrangle to the
east is ongoing (Blake, Peach, and Morrow, in progress). To the south and west of the
Vicksboro Ouadrangle, the Ingleside (Stoddard, 2010) and Henderson (Blake and Stoddard,
2016) Ouadrangles have been mapped at 1:24,000.
Equal-Area Schmidt Net Projections
and Rose Diagram
Plots and calculations created using Stereonet v. 8.6.0 based on
Allmendinger et al. (2013) and Cardozo and Allmendinger (2013).
Equal-Area Schmidt Net Projection of
Contoured Poles to Foliation,
Schistosity and Spaced Cleavage
Contour Interval = 2 sigma N = 169
Equal-Area Schmidt Net Projection of
Contoured Poles to Gneissic Layering
Contour Interval = 2 sigma N = 207
DESCRIPTION OF MAP UNITS
Qal - Quaternary alluvium: Unconsolidated, poorly sorted and poorly stratified tan to light gray
stream deposits of gravel, sand, silt, and clay.
PPwg
PPwg ■ Biotite granite: Leucocratic (Cl less than 15), orange-tan to gray-tan, pink or salmon
and white, medium to coarse-grained, locally porphyritic biotite ± epidote granite and sparse
weakly porphyritic biotite ± white mica ± garnet leucogranite. Locally crosscuts foliated biotite
granite. Locally contains enclaves of hornblende biotite gneiss (ZPhbg). May be part of the
Wise pluton or Rolesville batholith. May be equivalent to PPgd of the Ingleside and Louisburg
Quadrangles, and/or to the Rolesville main phase of Speer (1994). NEVA-609; NEVA-612
PPg
PPg - Granite: Medium-grained, equigranular to weakly porphyritic white, pink, orange or buff
biotite ± muscovite granite (Cl=8-15). Includes fine to medium-grained, non-porphyritic, locally
foliated white mica ± garnet ± biotite leucogranite (Cl less than 5), and rare granodiorite (Cl=15-
20). Pegmatite dikes common. NEV-431; 367; 315; 423; 444; 472
PPfg
PPfg - Foliated granitic rocks: Medium crystalline, tan-gray to blue-gray, leucocratic to
mesocratic, well foliated biotite + white mica metagranitoid and white mica ± biotite ± garnet
leucocratic metagranitoid. Commonly protomylonitic to mylonitic and ultramylonitic and
porphyroclastic. Includes mylonitized pegmatitic to coarsely crystalline, porphyroclastic white
mica ± biotite + quartz + feldspar metagranitoid sills, presenting a migmatitic appearance. Lies
within the Lake Gordon mylonite zone. Equivalent to Pg3 of the Middleburg Quadrangle. (NEV-
157; 455; 462; 469F; 473)
Raleigh Terrane
ZPdig
ZPdig - Diorite/gabbro or metadiorite/metagabbro: Dark gray, mesocratic, medium to
coarse-grained hornblende diorite and gabbro. CI=40-60. NEV-227
ZPbms - White mica biotite schist: Medium-fine to coarse crystalline, gray-tan to silvery,
strongly foliated white mica + biotite schist with or without garnet, and biotite + white mica +
garnet + sillimanite schist. Sillimanite and garnet may be overgrown by white mica. Commonly
feldspathic. Locally phyllonitic to mylonitic with feldspar porphyroclasts. May be intruded by
pegmatitic to coarsely crystalline, porphyroclastic white mica ± biotite + quartz + feldspar
gneissic metagranitoid sills that are locally migmatitic. Locally includes small bodies of
leucogranite. Equivalent to ZPwms of the Middleburg Quadrangle. NEV-35; 125; 130
ZPgg
ZPgg - Granitoid gneiss: Medium to dark gray, fine to medium grained, moderately to well
foliated biotite-quartz-plagioclase ± alkali feldspar gneiss and schist (NEV-161F.) Varies from
unlayered biotite granitoid gneiss to variably layered biotite gneiss to schistose biotite gneiss and
rarely biotite schist. Layers are typically discontinuous. Locally protomylonitic, mylonitic, or
ultramylonitic. Locally carries garnet, epidote, or sulfide minerals. Locally associated with dikes
and/or sills of pegmatite and/or leucogranite. Also occurs as xenoliths within granitoid bodies.
NEV-21 ; 61 ; 62; 65; 89; 93: 161 F; NEVM-172; NEV-214; 221; 305
ZPhbg
ZPhbg - Hornblende biotite gneiss: Leucocratic to mesocratic (CI-20-45), black-gray to blue-
gray, medium grained to porphyroclastic gneiss. (NEV-24, 42, 45A, B; 47; 229; 259; 260; 284;
319; 335; 592) More mafic occurrences locally contain clinopyroxene and/or epidote. (NEV-171 ;
306; 419) Biotite and/or hornblende define a foliation associated with mm-scale plagioclase and
quartz compositional layers and, locally, larger plagioclase porphyroclasts. (NEV-100; 235; 261)
Weakly to strongly layered. Includes rare fine-grained calcsilicate rock or hornfels consisting of
amphibole + quartz + sulfides ± ciinopyroxene and/or biotite. (NEV-170; 302; 344; 393) Includes
fine to medium-grained, poorly to moderately well-layered amphibolite and amphibolite gneiss.
May include rare metagabbro or metadiorite. (NEV-7) Includes layers and other domains of
biotite granitoid gneiss and small unmapped bodies of cross-cutting granite and leucogranite.
Dikes and sills of pegmatite are profuse. Local grain size variations in part due to mylonitic
overprint.
ZPum - Metaultramafic rocks: Hypermelanocratic to melanocratic (Cl greater than 65), green
to black-green interlayers and pods of massive, coarse-grained talc ± actinolite schist and,
locally, medium-grained metagabbro. Occurs as enclaves in ZPhbg.
ZPms
ZPms - White mica schist: Medium crystalline muscovite ± biotite schist, locally with chlorite
and commonly quartzofeldspathic.
Equal-Area Schmidt Net Projection of
Fold Hinges (black circles) and Lineations
(Mineral, Pencil and other) (blue squares)
Fold Hinges N = 11
Lineations N = 13
Unidirectional Rose Diagram of Joints N = 56
Outer Circle = 10%
Mean vector = 260 degrees
This geologic map was funded in part by the USGS National Cooperative Geologic Mapping Program
ZPhbg
ZPbms
СА0РГ
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/Zy SHORT1
VINCENT HOYLE RD
ZPhbg
VI LL
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SB ORO RD
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wmm
IliA
CILLBUI
QUAKER
TRISTEN LN "7
Produced by the United States Geological Survey.
Altered by the North Carolina Geological Survey for use with map.
North American Datum of 1983 (NAD83)
World Geodetic System of 1984 (WGS84). Projection and
1 000-meter grid: Universal Transverse Mercator, Zone 17S
10 000-foot ticks: North Carolina Coordinate System of 1983
Imagery .
Roads .
Names.. ....
Hydrography.
Contours.. .
Boundaries. .
. NAIP. May 2012
. 02006 2012 TomTom
GNIS. 2012
...National Hyd-ogiaphy Datasel. 2012
National Elevation Dataset. 20C8
Census. BWC. IBC. USGS.
19/2
2012
»•
25
167 MILS
Г
35
28 MILS
UTM GRID AND 2013 MAGNETIC NORTH
DECLINATION AT CENTER OF SHEET
U S. National Grid
100,000-m Square ID
QA
Grid Zone Designation
17S
SCALE 1:24 000
ROAD CLASSIFICATION
1
1000
05
500
KILOMETERS
05
METERS
0
10C0
2000
1000
ЮС0
2000
ЭСС0
MILES
<0C0 5000
6000
ЛЗОО
8000
9000
10000
FEET
CONTOUR INTERVAL 10 FEET
NORTH AMERICAN VERTICAL DATUM OF 1988
This map was produced to conform with the
National Geospatial Program US Topo Product Standard, 2011.
A metadata file associated with this product is draft version 0.6.11
QUADRAHGU LOCATION
Townsville
Middleburg
Warrenton
Henderson
Vicksboro
Afton
Kittrell
Ingleside
Gold
Sand
Expressway Local Connector -
Secondary Hwy - Local Road
Ramp _ 4WD
ф
Interstate Route \ US Route Q) State Route
VICKSBORO, NC
2013
ADJOINING 7.5 QUADRANGLES
Lake Gordon
fault zone
Stewart
Farm Rd.
S. Cokesbury
Rd.
Stewart
Rd.
Jones Chapel
Rd.
sea level
-2800
sea level
-2800
North Carolina Geological Survey
Open File Report 2017-08
EXPLANATION OF MAP SYMBOLS
CONTACTS, FAULTS, AND OTHER FEATURES
- inferred contact - inferred ductile fault
. concealed contact . concealed ductile fault
- Quaternary alluvium contact - cross section line
In cross section, for ductile strike-slip faults,
the circle with an X indicates movement away from the observer,
the circle with a dot indicates movement towards the observer.
© observation station location • diabase station location
crushed stone quarry - active
PLANAR FEATURES
Strike and dip of inclined schistosity and foliation
Strike of vertical schistosity and foliation
Strike and dip of inclined schistosity and foliation
(multiple observations at one location)
Strike of vertical schistosity and foliation
(multiple observations at one location)
Strike and dip of spaced and/or slaty cleavage
Strike and dip of crenulation cleavage
Strike and dip of inclined undifferentiated
shear strain foliation
(multiple observations at one location)
Strike and dip of gneissic layering
Strike of vertical gneissic layering
Strike and dip of gneissic layering
(multiple observations at one location)
T Strike of vertical gneissic layering
(multiple observations at one location)
[ 65 Strike and dip of inclined dike
f6o Strike and dip of inclined dike
[ 77 (multiple observations at one location)
f Strike of vertical dike
(multiple observations at one location)
|i as Strike and dip of inclined joint/fracture surface
Strike of vertical joint surface
Strike and dip of inclined joint/fracture surface
• to (multiple observations at one location)
Strike of vertical joint surface
(multiple observations at one location)
78 Strike and dip of inclined quartz vein
Strike of vertical quartz vein
LINEAR FEATURES
* Bearing and plunge of mineral
| or aggregate lineation
47
jt Bearing and plunge of pencil lineation
f
Bearing and plunge of
crenulation lineation
?
Bearing and plunge of
mesoscale fold hinge
REFERENCES
Allmendinger, R. W., Cardozo, N. C., and Fisher, D., 2013, Structural Geology Algorithms: Vectors and Tensors: Cambridge,
England, Cambridge University Press, 289 pp.
Blake, D. E., and Stoddard, E. F., 2016, Bedrock geologic map of the Henderson 7.5-minute quadrangle, Vance County, North
Carolina: North Carolina Geological Survey Open-File Report 201 6-17, scale 1:24,000, in color.
Cardozo, N., and Allmendinger, R. W., 2013, Spherical projections with OSXStereonet: Computers and Geosciences, v. 51,
no. 0, p. 193-205, doi: 10.101 6 j.cageo.201 2.07.021.
Farrar, S.S., 1985a, Stratigraphy of the northeastern North Carolina Piedmont: Southeastern Geology, v. 25, p. 159-183.
Farrar, S.S., 1985b, Tectonic evolution of the easternmost Piedmont, North Carolina: Geological Society of America Bulletin, v.
96, p. 362-380.
Hibbard, J. P., Stoddard, E. F., Secor, D. T, and Dennis, A. J., 2002, The Carolina Zone: Overview of Neoproterozoic to Early
Paleozoic peri-Gondwanan terranes along the eastern flank of the southern Appalachians: Earth Science Reviews, v. 57, p.
299-339.
McDaniel, R. D., 1980, Geologic map of Region K: North Carolina Department of Natural Resources and Community
Development, Geological Survey Section, Open File Map NCGS 80-2 [scale 1 :1 00,000].
Parker, J. M., Ill, 1968, Structure of easternmost North Carolina Piedmont: Southeastern Geology, v. 9, p. 117-131.
Sacks, P.E., 1996a, Geologic map of the Bracey 7.5-minute quadrangle, Mecklenburg County, Virginia, and Warren County,
North Carolina: U.S. Geological Survey, Miscellaneous Field Studies Map MF-2285, scale 1 :24,000.
Sacks, P.E., 1996b, Geologic map of the South Hill SE 7.5-minute quadrangle, Mecklenburg and Brunswick Counties, Virginia,
and Warren County, North Carolina: U.S. Geological Survey, Miscellaneous Field Studies Map MF-2286, scale 1:24,000.
Sacks, P.E., 1996c, Geologic map of the Gasburg 7.5-minute quadrangle, Brunswick County, Virginia, and Warren,
Northampton, and Halifax Counties, North Carolina: U.S. Geological Survey, Miscellaneous Field Studies Map MF-2287, scale
1:24,000.
Sacks, P.E., 1996d, Geologic map of the Valentines 7.5-minute quadrangle, Brunswick and Greensville Counties, Virginia, and
Northampton, and Halifax Counties, North Carolina: U.S. Geological Survey, Miscellaneous Field Studies Map MF-2288, scale
1:24,000.
Speer, J.A., 1994, Nature of the Rolesville Batholith, North Carolina, in Stoddard, E.F. and Blake, D.E., eds., Geology and Field
Trip Guide, Western Flank of the Raleigh Metamorphic Belt North Carolina, Carolina Geological Society Guidebook for 1994
Annual Meeting, p. 57-62.
Stoddard, E. F., 2010, Bedrock geologic map of the Ingleside 7.5-minute quadrangle, Franklin and Vance Counties, North
Carolina: North Carolina Geological Survey Open-File Report 201 0-05, scale 1:24,000, in color.
Stoddard, E. F., Blake, D. E., and Buford, C. L., 2016, Bedrock geologic map of Ihe Middleburg 7.5-minute quadrangle, Vance
and Warren Counties, North Carolina: North Carolina Geological Survey Open-File Report 2016-04, scale 1 :24,000, in color.
TRAVERSE MAP
Hillshade derived from a 20 foot LiDAR digital elevation
model. Red and blue lines show paths of field traverses.
by car
by foot
This is an Open File Map. It has been reviewed internally for conformity with North Carolina
Geological Survey mapping standards and with the North American Stratigraphic Code.
Further revisions or corrections to this Open File map may occur.
measurements in feet - no vertical exaggeration
Geologic Map of the Northeastern Portion of the Vicksboro
7.5-minute Quadrangle, Warren and Vance Counties, North Carolina
By Edward F. Stoddard, Randy Bechtel, and Brandon T. Peach
Digital representation by Michael A. Medina and Philip J. Bradley
2017
Research supported by the U.S. Geological Survey, National Cooperative Geologic Mapping
Program, under USGS award number G16AC00288. The views and conclusions contained in
this document are those of the authors and should not be interpreted as necessarily
representing the official policies, either expressed or implied, of the U.S. Government.
This geologic map was funded in part by the USGS National Cooperative Geologic Mapping
Program under State Map award number G16AC00288, 2016.
Acknowledgments: We thank Phil Bradley for assistance with office work and logistics.
Thanks also to Steve Stadelman, who introduced us to the area and has independently
undertaken a study of surficial deposits in the region. In addition, we thank all the landowners
who graciously allowed access to their property, especially Herman Collier.
Geologic Map of the Northeastern Portion of the Vicksboro 7.5-minute Quadrangle, Open File Report 2017-08