Pt DESCRIPTION OF MAP UNITS - Vermont · Base map from U.S. Geological Survey. Coordinate System:...
Transcript of Pt DESCRIPTION OF MAP UNITS - Vermont · Base map from U.S. Geological Survey. Coordinate System:...
Base map from U.S. Geological Survey.Coordinate System: Vermont State Plane, meters, NAD 83.Geographic coordinates shown at topo corners are in NAD 83.Grid overlay on map is UTM, Zone 18N, NAD83.Digital cartography by George Springston, May 29, 2016.Bedrock outcrop locations are from Konig (1961) and this study.Thanks to Devlin Rutherford for enthusiastic field assistanceand to the Town of Cabot for volunteer support throughoutthe project.Supported by the U. S. Geological Survey, National CooperativeGeologic Mapping Program, under assistance Award No. G15AC00200.This manuscript is submitted for publication with the understandingthat the United States Government is authorized to reproduce anddistribute reprints for governmental use.
The views and conclusions contained in this document are those of the authors and should not be interpreted as necessarilyrepresenting the official policies, either expressed or implied, of theU.S. Government.Reference:Konig, R.H., 1961, Geology of the Plainfield quadrangle: VermontGeological Survey Bulleting no. 16, Montpelier, 86 p. plus 2 plates(1:62,500).
Surficial Geologic Map of the Cabot7 1/2 Minute Quadrangle, Vermont
0 1 2 3 4 5Kilometers
Vermont Geological Survey Open File Report VG16-3, Plate 1
byGeorge E. Springston
2016
Contour Interval 20 feet
0 1 2 3Miles
Scale 1:24,000
Published by:Vermont Geological Survey, Dept. of Environmental ConservationMarjorie Gale, State Geologist1 National Life Dr., Montpelier, VT802-522-5210http://dec.vermont.gov/geological-survey
Vermont Geological Survey Open File Report VG16-3, Plate 1
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Location
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14.8 degrees west, 2016
# Field Site! Bedrock Outcrops
Ü Glacial Striation
!( Water WellBorings
? Kettle HoleF Granitic Glacial BoulderD Sand or Gravel PitD Bedrock QuarryS Dam Site
Cross Section LineAbandoned Stream Channel
Projected Glacial Lake Winooski ShorelineEE EE EE EE Esker
Meltwater ChannelQuadrangle BoundariesWater Bodies
DESCRIPTION OF MAP UNITS Holocene Deposits Artificial Fill. Artificially-emplaced earth along road beds, embankments and in low-lying areas. Graded or Filled. Area of extensive artificial excavation or filling. Alluvium. Silt, sand, and gravel deposited by modern streams. Deposits include stream channel and bar deposits and finer-grained floodplain deposits. Wetland deposits are common within these areas and are not distinguished. Thickness in the tributaries is typically less than 3 meters, although the depth may be much greater in the valleys of the larger streams. Wetland Deposits. Accumulations of clastic sediment and/or organic matter. Commonly overlaying other sediments such as alluvium, lacustrine deposits, or till. Only a few of the larger deposits are shown. Wetland Deposits, Peat or Muck. Thick accumulation of organic matter with minor clastic sediment. Commonly overlaying other sediments such as alluvium, lacustrine deposits, or till. Thickness of organic horizon ranges from 0.3 meter to greater than one meter. Stream Terrace Deposits. Silt, sand, pebble, cobble, and boulder gravel deposited on terraces above the modern floodplains of streams. They represent former floodplains that have been dissected by younger streams. Talus. Fans or aprons of fallen rock at the base of cliffs. May contain colluvial (slope-wash) deposits as well. Of variable thickness. Colluvium. Fans or aprons of sediment at the base of steep slope segments. Slope-wash deposits of variable thickness. Pleistocene Deposits Lake Deposits, undifferentiated. Coarse- to fine-grained lake deposits. Largely deposited in arms of glacial Lake Winooski, excerpt in the northern part of the study area to the east of Hardwick village, where the deposits may grade to a higher-level glacial lake. Lake Deposits, Coarse-grained. Well-sorted sand, pebbly sand and/or sandy gravel deposited in shoreline, shallow waters, or lake bottom environments of glacial Lake Winooski or in higher-level glacial lakes of limited areal extent. Parts of the coarse-grained deposits between Lower Cabot and Cabot in the Winooski River valley and in the lower Jug Brook valley may be delta or shoreline deposits, but more detailed mapping would be needed to distinguish these. Lake Deposits, Fine-grained. Clay, silt, and very fine to fine sand deposited in deeper waters. Commonly varved. Deposited in lake bottom environments of glacial Lake Winooski or in higher-level glacial lakes of limited areal extent. Ice-contact Deposits. Unsorted to poorly-sorted sand, gravel, and silt deposited in contact with glacial ice. Kettle holes and a small esker are visible on the ice-contact deposits north of Nichols Pond. A probable esker buried by collapsed lacustrine sands and silts is exposed in the sandpit west of Smith Corner in Walden. Till. Dense to very dense, unsorted to very poorly sorted, fine-sand- to silt-matrix till. Surface boulders are common, with boulders of the local Woodbury Granite common in the western third of the study area. Thickness of the till is highly variable, from less than 3 meters to greater than 30 meters. Till, Thin. Descriptions as in preceding unit. Thickness highly variable but generally less than 3 meters and bedrock outcrops are very common. Bedrock. Area of extensive bedrock exposures. Most outcrops visited during this study are indicated by the point symbols described below.
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Base map from U.S. Geological Survey.Coordinate System: Vermont State Plane, meters, NAD 83.Geographic coordinates shown at topo corners are in NAD 83.Digital cartography by George Springston, June 30, 2016.Research supported by the Vermont Geological Survey,Dept. of Environmental Conservation, VT ANR.The views and conclusions contained in this document arethose of the authors and should not be interpreted asnecessarily representing the official policies, either expressedor implied, of the State of Vermont.
Water Well Locations,Cabot Quadrangle, Vermont
0 1 2 3 4Kilometers
Vermont Geological Survey Open File Report VG2016-3, Plate 2
byGeorge E. Springston
2016
0 1 2Miles
Scale 1:24,000
Published by:Vermont Geological Survey, Marjorie Gale, State GeologistDepartment of Environmental Conservation1 National Life Drive, Davis 2Montpelier, VT 05620-3902http://dec.vermont.gov/geological-survey
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n Rd
E Hill Rd
Th 31
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Rd
Bliss
Rd
Brook Rd
Keene Rd
Cabot Plains Rd
Ducharme Rd
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y-Haz
en R
d
Old Duke
Rd
Coits
Pond
Rd
W Shore Rd
Churc
hill Rd
Ennis Hill Rd
Hopkins Hill Rd
Nichols Pond Rd
Dutto
n Rd
Whee
ler R
d
Th 57
Dubra
y Rd
Mack Mtn Rd
Elm St
Mackville Rd
Hines
Pl Tr
l
Thistle Hill Rd
Summ
erhill R
d
Smith
Rd
Coles Pond Rd
Langone Rd
Scott
Rd
Ward Hill Rd
Stratt
on R
d
Walbr
idge R
d
White Rd
Weaks Pl
Houston Hill Rd
Houston Hill
Last Rd
Wrigh
t Farm
Rd
Valley Rd
Orton
Rd
Mountainview Rd
Mena
rd Rd
Pumpkin Ln
Taylo
r Rd
Buffalo Mountain Rd
Stevens Hill E
Macks Mtn Rd
Molly Rd
Hook
erville
Rd
Houghton Rd
Brow
n Farm
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Pransky
Rd
Th 58
Tebb
etts R
d
Cow Hill Rd
Glenside Av
Ai En
nis Pl
Carey Rd
Stone
Ln
Mccrillis Rd
Catamount Rd
Olney Hill
Youn
g Farm
Rd
Bolton Rd
S Camp Rd
Watson
Rd
N Camp Rd
N Main
St
Channel Dr
Porte
r Rd
Sunri
se Dr
Union St
Porter Brook Rd
Stevens RdBu
tler Rd
Granite St
Dix Rd
Haze
n Ln
Kello
gg St
Richardson Rd
Hideaway St
Th 54
Hillside Dr
Th 34
Marshall St
Nichols D
am Rd
Stone Farm Rd
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ance
Dr
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d
Last Rd
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Route 15
Noyestar Rd
Cabot Rd
S Wald
en Rd
Route
215 N
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215 S
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uth
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Nichols Pond
East Long Pond
Buck Lake
Mollys Pond
Coits Pond
West Hill Pond
Lyford Pond
Mud Pond
Mud Pond
Knob Hill Pond
Little Mud Pond
Mud Pond
Pickett Pond
72°15'0"W
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#* Water WellMajor RoadsMinor RoadsStreamsWater BodiesQuadrangle BoundariesTown Boundaries
Vermont Geological Survey Open File Report VG2016-3, Plate 2
Location
ÖMagnetic declination
14.7 degrees west, 2016
EXPLANATION This plate shows locations of water wells in and near the quadrangle. As many of the older wells have uncertain locations, only wells with verified locations are used in this analysis. Newer wells with driller-reported GPS locations or E911 addresses are assumed to be close to the correct locations. Other well locations have been verified by use of State records of hazardous waste sites and septic systems, searches of town records, local knowledge, or online searches to verify that the listed owner has a residence at the location shown.
Base map from U.S. Geological Survey.Coordinate System: Vermont State Plane, meters, NAD 83.Geographic coordinates shown at topo corners are in NAD 83.Digital cartography by George Springston, June 30, 2016.Research supported by the Vermont Geological Survey,Dept. of Environmental Conservation, VT ANR.The views and conclusions contained in this document arethose of the authors and should not be interpreted asnecessarily representing the official policies, either expressedor implied, of the State of Vermont.
Depth to Bedrock,Cabot Quadrangle, Vermont
0 1 2 3 4Kilometers
Vermont Geological Survey Open File Report VG2016-3, Plate 3
byGeorge E. Springston
2016
0 1 2Miles
Scale 1:24,000
Published by:Vermont Geological Survey, Marjorie Gale, State GeologistDepartment of Environmental Conservation1 National Life Drive, Davis 2Montpelier, VT 05620-3902http://dec.vermont.gov/geological-survey
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Ducharme Rd
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en R
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Old Duke
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Ennis Hill Rd
Hopkins Hill Rd
Nichols Pond Rd
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n Rd
Whee
ler R
d
Th 57
Dubra
y Rd
Mack Mtn Rd
Whittier Hill Rd
Blodgett RdElm St
Mackville Rd
Hines
Pl Tr
l
Thistle Hill Rd
Summ
erhill R
d
Smith
Rd
Coles Pond Rd
Langone Rd
Scott
Rd
Ward Hill Rd
Stratto
n Rd
Walbr
idge R
d
White Rd
Weaks Pl
Bothfeld Hill RdHouston Hill Rd
Houston Hill
Last Rd
Wrigh
t Farm
Rd
Valley Rd
Orton
Rd
Mountainview Rd
Glinka Rd
Bricketts Crsg
Jug Brook Rd
Mena
rd Rd
Pumpkin Ln
Taylo
r Rd
Buffalo Mountain Rd
Stevens Hill E
Macks Mtn Rd
Molly Rd
Hook
erville
Rd
Houghton Rd
Brown Farm Rd
Hays Dr
Upper Harrington Hill
Pransky
Rd
Th 58
Tebb
etts R
d
Cow Hill Rd
Glenside Av
Ai En
nis Pl
Carey Rd
Stone
Ln
Mccrillis Rd
Catamount Rd
Mckinstry Rd
Keene Farm Rd
Olney Hill
Youn
g Farm
Rd
Corner Rd
Bolton Rd
Patoi
ne Pl
S Camp Rd
Watson
RdStevens Hill W
N Camp Rd
N Main
St
Tetreault Rd
Old Ce
nter R
d
Deep
er Ru
ts Rd
Cross St
Channel Dr
Cherry St
Porte
r Rd
Sunri
se Dr
Union St
Porter Brook Rd
Stevens Rd
Carpenter Rd
Atkins
La
Butler
Rd
Greaves Rd
Broo
k St
Cathy Rd
Dix Rd
Garney Rd
Haze
n Ln
N Po
nd R
d
Highland AvRichardson Rd
Hideaway St
Bean Av
Hillside Dr
Th 34
Marshall St
Th 55
Bedell Rd
Stone Farm Rd
Bellav
ance
Dr
Th 30
Houston Hill Rd
Bayley-Hazen Rd
E Hill R
d
Route
2
Route 15
Noyestar Rd
Cabot Rd
S Wald
en R
d
Route
215 N
Route 15-east
Danville Hill Rd
Route
215 S
Route 1
4
Main St
Route
16
Route 2
15
West
Hill P
ond R
d
Center Rd
Route
14-so
uth
Slapp Hill
Route 2
Cabo
t Rd
Route 2
Cabo
t Rd
Cabot Rd
Nichols Pond
East Long Pond
Buck Lake
Mollys Pond
Coits Pond
West Hill Pond
Lyford Pond
Mud Pond
Mud Pond
Knob Hill Pond
Little Mud Pond
Mud Pond
Pickett Pond
72°15'0"W
72°15'0"W
72°22'30"W
72°22'30"W
44°3
0'0"N
44°3
0'0"N
44°2
2'30"N
44°2
2'30"N
Depth To BedrockWater WellsDepth To Bedrock (feet)
0.0 - 20.020.1 - 40.040.1 - 60.060.1 - 80.080.1 - 100.0100.1 - 297.0outcropsMajor RoadsMinor RoadsQuadrangle BoundariesTown BoundariesStreamsWater Bodies
Vermont Geological Survey Open File Report VG2016-3, Plate 3
Location
ÖMagnetic declination
14.7 degrees west, 2016
EXPLANATION This plate shows depth to bedrock in feet. Depth to bedrock is indicated by the size of the green symbols at each well location. Bedrock outcrops are shown as black dots. The red lines are approximate contours at depths of 20, 40, 60, 80, and 100 feet. Note that most of the areas with more than 20 feet to bedrock are in Hardwick and Walden. The depth is more certain in areas with abundant water well logs and/or bedrock outcrops and less certain in areas where this information is sparse. The mean depth to bedrock in the wells is 32.1 feet and the median value is 20.5 feet.