NJDEP Maps and Publications Sales Office PO Box 417, Trenton, N.J. 08625-0417 Telephone (609)777-1038.
MAPEXTENT
sediment sedthick sometill
xmin = 296863.938 xmin = 304647.125 xmin = 326341.031
ymin = 607085.688 ymin = 612920.562 ymin = 683322.688
xmax = 659480.375 xmax = 660438.312 xmax = 546900.188
ymax = 919466.250 ymax = 918745.438 ymax = 760912.375
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SUBJECT DATA LAYERS
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PUBLISHED REFERENCES (for thickness coverage only)
Canace, R., Hutchinson, W.R., Saunders, W.R., and Andres, K.G., 1983, Results of the 1980-81 drought emergency ground water investigation in Morris and Passaic counties, New Jersey: N.J. Geological Survey Open-File Report 83-3, 132 p.
Canace, R., and Hutchinson, W.R., 1988, Bedrock topography and profiles of valley-fill deposits in the Ramapo River valley, New Jersey: N.J. Geological Survey Geologic Map Series 88-6, 2 sheets
Carswell, L.D., Rooney, J.G., 1976, Summary of geology and ground-water resources of Passaic County, New Jersey: U.S. Geological Survey Water Resources Investigations 76-75, 47 p.
Ghatge, S.L., and Hall, D.W., 1989, Geophysical investigations to determine bedrock topography in the East Hanover-Morristown area, Morris County, New Jersey: N.J. Geological Survey Report 17, 24 p.
Herpers, H., and Barksdale, H.C., 1951, Preliminary report of the geology and ground-water supply of the Newark, New Jersey area: N.J. Department of Conservation and Economic Development, Division of Water Policy and Supply, Special Report 10, 52 p.
Lovegreen, J.R., 1974, Paleodrainage history of the Hudson estuary: M.S. thesis, Columbia University, 152 p.
Miller, J.W., 1974, Geology and ground-water resources of Sussex County and the Warren County portion of the Tocks Island impact area: N.J. Department of Environmental Protection, Division of Water Resources, Bureau of Geology and Topography Bulletin 73, 143 p.
Nemickas, Bronius, 1974, Bedrock topography and thickness of Pleistocene deposits in Union County and adjacent areas, New Jersey: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-795.
Nichols, W.D., 1968, Bedrock topography of eastern Morris and western Essex counties, New Jersey, U.S. Geological Survey Miscellaneous Geological Investigations Map I-549.
Parillo, D.G., 1959, Bedrock map of the Hackensack meadowlands: N.J. Geological Survey Geologic Report Series 1, 25 P. Revised by H.F. Kasabach, 1962.
Reimer, G.E., 1984, The sedimentology and stratigraphy of the southern basin of glacial Lake Passaic, New Jersey: M.S. thesis, Rutgers University, 205 p.
Rotation (degrees) = (0.348) RMS Error (input,output) = (0.005,41.070)
Sedthick coverage transformation
Rotation (degrees) = (89.766) RMS Error (input,output) = (0.014,116.927)
NAME OF DATA
sediment, sedthick, and sometill
SEDIMENT.PAT (POLYGONS)
Sediments of Late Wisconsinan age
SYMBOL GEONUM GEOABB Description
(113, 112, ct , Continuous Till ) Continuous till generally greater than 20 feet thick. May be as much as 200 feet thick. Grain size of matrix generally reflects underlying bedrock. Silty sand to sandy till forms on gneiss, sandstone, quartzite, and conglomerate; silty till forms of shale, carbonate, basalt and diabase; silty clay till forms locally on shale and on Cretaceous clay.
-Hydrologic Chararcter - May be a local unconfined aquifer where thick and sandy. In the Passaic basin between Summit and Morristown till overlies productive, confined lacustrine-fan and fluvial sand and gravel aquifers in places. These areas are shown as polygons in the "sometill" theme.
(129, 114, dt, Thin Till and Rock Outcrop) Discontinuous till generally less than 20 feet thick, numerous bedrock outcrops.
-Hydrologic Chararcter - No significant surficial aquifer overlying bedrock.
(122, 116, m, Morainic Deposits) Till, sandy diamict, and minor sand and gravel deposited as ridges and knolls along former ice margins. May interbed with and overlie fluvial, deltaic, lacustrine-fan, and lake-bottom sediment where moraines traverse valleys and glacial lake basins. May be as much as 200 feet thick.
-Hydrologic Character- May be a local unconfined aquifer where thick; productive confined and semi-confined lacustrine-fan, deltaic, and fluvial sand and gravel aquifers may occur beneath morainic deposits in places. These areas are shown as polygons in the "sometill" theme.
(69, 119, d, Deltaic and Lacustrine-Fan Deposits) Sand and gravel deposited as deltas and fans in glacial lakes. May locally overlie lake-bottom sediment. As much as 200 feet thick.
-Hydrologic Chararcter- Unconfined aquifer where sufficiently thick. Lacustrine-fan sand and gravel is a productive confined or semi-confined aquifer in places in the subsurface, where it is overlain by lake-bottom sediment. Surface outcrops of deltas and fans may be recharge areas for these confined lacustrine-fan aquifers.
( 60, 120, l, Lake-Bottom Deposits) Silt, clay, and fine sand deposited on the bottoms of glacial lakes. As much as 250 feet thick.
-Hydrologic Character- Generally a confining or semi-confining layer. Underlain by productive confined and semiconfined lacustrine-fan and fluvial aquifers in places.
(84, 124, fl, Fluvial over Lacustrine Deposits) Generally a three-part vertical sequence of fluvial sand and gravel overlying deltaic and lake-bottom fine sand, silt, and minor clay, in turn overlying lacustrine-fan sand and gravel. Entire section may be as much as 250 feet thick.
-Hydrologic Chararcter- Upper sand and gravel may be an unconfined aquifer where thick or where hydrologically connected to surface water. Middle silt and fine sand unit is a confining or semi-confining layer. Lower sand and gravel may be a productive confined or semi-confined aquifer.
(109, 122, f, Fluvial Deposits) Sand and gravel deposited in plains in valleys not occupied by glacial lakes. Generally less than 50 feet thick.
-Hydrologic Character- Unconfined aquifer where sufficiently thick or where hydrologically connected to surface water.
(88, 128, ic, Ice-Contact Deposits) Sand and gravel and sandy, bouldery diamict forming hummocky topography. May be as much as 200 feet thick.
-Hydrologic Character- Unconfined aquifer where sufficiently thick; in large lake basins may be recharge areas for confined lacustrine-fan aquifers.
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Sediments of Illinoian age
SYMBOL GEONUM GEOABB Description
(112, 112, it, Till) Sandy silt to clayey sandy silt till. Occurs as erosional remnants on gentle to moderate slopes. Maximum thickness 50 feet.
-Hydrologic Character- Too thin to be an aquifer. May retard movement of surface water into the underlying bedrock.
(128, 118, im, Morainic Deposits) Till as in unit "it" forming low ridges along former ice margins. May interbed with and overlie fluvial, deltaic, lacustrine-fan, and lake-bottom sediment where moraines traverse valleys and glacial lake basins. May be as much as 100 feet thick.
-Hydrologic Character- May be a local unconfined aquifer where thick; productive confined and semi-confined lacustrine-fan, deltaic, and fluvial sand and gravel aquifers may occur beneath morainic deposits in places.
(74, 121, id, Deltaic and Lacustrine-Fan Deposits) Sand and gravel deposited as deltas and fans in glacial lakes. May locally overlie lake-bottom sediment. As much as 150 feet thick.
-Hydrologic Character- Unconfined aquifer where sufficiently thick. Lacustrine-fan sand and gravel is a productive confined or semi-confined aquifer in places in the subsurface, where it is overlain by lake-bottom sediment. Surface outcrops of deltas and fans may be recharge areas for these confined lacustrine-fan aquifers.
(105, 105, if, Fluvial Deposit) Sand and gravel deposited in plains in valleys not occupied by glacial lakes. Generally less than 50 feet thick.
-Hydrologic Character- Unconfined aquifer where sufficiently thick or where hydrologically connected to surface water.
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Sediments of Jerseyan age
SYMBOL GEONUM GEOABB Description
(111, 132, jt, Till) Sandy silt till to clayey silt till. Occurs as erosional remnants on flat upland areas. Maximum thickness 30 feet.
-Hydrologic Character- Too thin to be an aquifer. May retard movement of surface water into the underlying bedrock.
(63, 134, js, Fluvial and Deltaic Deposits) Sand and gravel of both fluvial and deltaic origin. Occur as erosional remnants on flat upland areas. Maximum thickness 80 feet but generally less than 30 feet thick.
-Hydrologic Character- Too thin to be an aquifer. Readily transmits surface water into the underlying bedrock.
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The "sometill" coverage contains areas where till (unit ct) and morainic deposits (units m, im) overlie sand and gravel (units f and d) and silt, fine sand, and clay (unit l).
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Non-Glacial Sediments
SYMBOL GEONUM GEOABB Description
(129 , _ , x, Colluvial and alluvial deposits and weathered bedrock material undifferentiated)
Non-glacial surficial material including weathered bedrock, colluvium, and alluvium. Weathered bedrock may be as thick as 300 feet on carbonate bedrock and 100 feet on gneiss and conglomerate bedrock but is generally less than 20 feet thick elsewhere. Colluvium occurs in wedge-shaped deposits at the base of hillslopes,and may be as much as 50 feet thick. Alluvium occurs in floodplains and terraces along streams and is generally less than 30 feet thick.
-Hydrologic Character- Weathered gneiss and conglomerate may be a local unconfined aquifer where thick and sandy. Otherwise, non-glacial materials are too thin to be aquifers.
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SEDTHICK.AAT (ARCS)
THICKNESS (feet)
0
50
100
150
200
250
300
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SEDTHICK.PAT (POLYGONS)
RANGE (feet)
<50
50 to 100
100 to 150
150 to 200
200 to 250
250 to 300
Maps and Publications Sales Office Bureau of Revenue PO Box 417 Trenton, N.J. 08625 telephone - (609) 777-1038. N.J. Geological Survey PO Box 427 Trenton, NJ 08625 (609) 984-6587 or 292-2576
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