surficial geology of the hightstown quadrangle, …ht-4 ht-5 27-3321 28-19204 28-1925 28-927...
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S10947
60
Qal
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7000 FEET1000 10000 2000 3000 4000 5000 6000
.5 1 KILOMETER1 0
SCALE 1:24 0001/ 21 0 1 MILE
MN N
1981 MAGNETIC NORTH DECLINATION AT CENTER
OF SHEET IS 11.5o LOCATION IN NEW JERSEY
74o30'40o22'30"
32'30"35'74o37'30"40o22'30"
20'
17'30"
40o15'74o37'30" 35' 32'30" 74o30'
40o15'
17'30"
20'
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28-406428-2-880
28-2-880
28-2-887
28-2-888
HT-4
HT-5
27-332128-19204
28-1925
28-927
28-1486728-8600
28-20103
28-20102
28-4346
28-6103
28-4343
28-2168
15
60
30
22
2226
74
>5168
40>50
48
13
30>70
40
43
130120
0
20
40
60
80
100
28-328228-2176
28-2344
28-8348
28-10010
28-4965
28-5203
28-12271
28-1303728-21224
W41W44
W7
WI
W42
W43 WV
W14
WD
W13WP W12
W11
W10WCW8
W15WO
W46
WE
WN
WK
W45
W39WVI
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WLW17
W49
W36
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WG
WIV
W30 W29
W27WH
W20
W40
WJ
W31
WVII
WIRL WIII
W9
W48
W37W18
W38
WF
W35 W34 W33W32
33
3528
343844
2836
4344
3750
53 69 7070
95>100
74
63
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4968
687979
47>35
4843
4738
4070
4458
64
32
5839 50
55
54
78
5970
75
67
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79
79
45
4445
47
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456463
35
W3
W1WA
W2
W6
WIWB
W4
W5
W23
W21 W22
WII
W24
53
6259
52
54
64
44
50
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65 65
>42
51
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50
28-6210
28-6056
28-1204628-681828-7792
28-6559
28-715128-8784
28-1985
52
52 >77 9355
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>71
30
30
Qal
Tp
Qs
Qal
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Tp
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28-3746
28-9289
28-11851
28-14378
28-1856128-16833
28-13073
28-11754
28-15319
28-13746
S-14H
28-13068
28-1345028-13083
28-1021728-12035
28-12359
28-12574
28-2986
28-12739
28-12025
28-4910
28-244028-690
28-7187
28-2094
28-890
28-12694
28-10460
28-142328-8881
28-8008
28-8670
5330>65
50
37
36
3226
19
34
42
2928
42
38
38
42
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7640
32
35
112
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>105
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75
23
33
47
45
4323-787
80
53
6385
60
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28-1147728-5019
28-6086
28-4951
28-6143
28-7021
28-4330 28-712028-1228428-5955
28-695077
726370
93
7857
8075
7528-700750
10
28-622628-5015
28-1989
28-2374
28-198628-3460
28-5351
28-5061
20
2828
55
24
24
20- 30
28-11075
28-11716
28-998528-21338
28-13825
28-4941
28-496128-5501
28-7523
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Qal
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28
28
35>76
74
83
6885
>92
28-8863
28-1804528-7839
28-6237
25
7975
65
23-791
28-12136
28-9835
28-9795
S102
S101
S103
S104
S105
28-11501
28-143028-1304728-18517
28-15572
28-1397628-15267
S106
S107
S108
S109
28-971
28-665428-1396
�S20A
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28-1091970 >65
688680
78
57 88
74
21
70
50
60
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27
85
21
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23-8
23-778 28-13514
S18A
S100
S99
S17A
28-6186
S16A
28-3371
S15A
28-4876
28-9328
28-5199
28-20915
28-18282
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36
38
8
45
38
42
65
50
71
82
77
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7
19
25
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2921
21
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28-5781
28-3483
28-3535
28-3067
28-136428-5784
28-5302
2050
10752
51
73
32
S110
S111
S112
S113
S114
S115
S116
S117
S26A
28-6117
S25A
S24A
S23A
28-13701
28-706128-12476
28-15179
21-17521-25
8
2433
34
38
35
40
68
60
6763
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22
22
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11
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28-6861
28-599328-10999
28-4873
28-1559
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28-11392
28-4232
28-13255
28-1243738
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27
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28-4589
28-1378
28-12003
28-9457
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S10A
S9A
28-18942
28-18560
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28-6944
30
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21
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23
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S93
S92
28-922
S91
S90
S89
S88 S87
S86
S85
S84
S83
S82
S81
S80
28-10532
28-10991
28-16723
28-9641
28-13138
23-291
28-1393428-12434
28-14150
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43
4331
53
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28-1478718
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80
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80
60
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0
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80
80
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28-2487
28-5649
21-241
28-126528-1395
28-247728-252
28-1515
28-4352
28-1498
28-5079
28-496728-1455
28-5780 28-7337
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>75
80
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71>71
>60>72
>70
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72
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5928-1499
28-4689
28-4979
28-8221 28-7768
28-13193
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S119
S118
S121
S122
S123
S124
S125
S126
S127
28-1274
74
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59
20
44
27
37
37
41
9
61
85>82
60
58
6521-152
32
18
S128
S129
S130
S131
S132
28-4875
20
19
14
19
0
31
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CONTOUR INTERVAL 20 FEETNATIONAL GEODETIC VERTICAL DATUM OF 1929
SURFICIAL GEOLOGY OF THE HIGHTSTOWN QUADRANGLE,MIDDLESEX AND MERCER COUNTIES, NEW JERSEY
byScott D. Stanford
2002
MAP UNITSAge of unit indicated in parentheses. For units spanning more than one period, principal age is listed first.
Order of map units in list does not necessarly indicate chronologic sequence.
ARTIFICIAL FILL--Sand, silt, clay, gravel; brown, gray, yellowish brown; may include demolition debris (concrete, brick, asphalt, glass) and trash. As much as 20 feet thick. Many small areas of fill in urban areas are not shown.
ALLUVIUM (Holocene and late Pleistocene)--Sand, silt, clay, peat; yellowish brown, dark brown, gray; and pebble gravel. Abundant organic matter. Sand is chiefly quartz, with some glauconite and mica. Gravel is quartz and quartzite with minor ironstone. As much as 20 feet thick. Deposited in floodplains, channels, and groundwater seepage areas.
SWAMP AND MARSH DEPOSITS (Holocene and late Pleistocene)--Peat and organic silt, sand, and clay; dark brown to black. As much as 10 feet thick.
COLLUVIUM AND ALLUVIUM (Holocene and late Pleistocene)--Interbedded alluvium and colluvium in headwater valleys. As much as 10 feet thick.
EOLIAN DEPOSITS (late Pleistocene and Holocene)--Fine sand and silt, very pale brown to reddish yellow. Sand is chiefly quartz with minor shale fragments, glauconite, and mica in places. As much as 6 feet thick. Shown as an overprint pattern where generally continuous but less than 3 feet thick.
LOWER TERRACE DEPOSITS (late Pleistocene)--Sand and minor silt; yellow, yellowish brown, reddish yellow; and pebble gravel. Sand is chiefly quartz with some glauconite and mica. Gravel is quartz and quartzite with minor ironstone. Adjacent to Carnegie Lake, gravel includes some gray siltstone and minor red siltstone and gray gneiss. As much as 30 feet thick. Forms stream terraces with surfaces 5 to 20 feet above the modern floodplain.
LOWER COLLUVIUM (late Pleistocene)--Sand, silt, minor clay; yellow, yellowish brown, reddish yellow, light gray; some quartz and ironstone pebbles. As much as 10 feet thick. Forms aprons graded to lower terraces or the modern floodplain,
UPPER TERRACE DEPOSITS (middle Pleistocene)--Sand and minor silt; yellow, reddish yellow; and pebble gravel. Sand is chiefly quartz; glauconite and mica are less abundant than in the lower terrace deposits and alluvium. Gravel is quartz, quartzite, and minor ironstone. As much as 20 feet thick. Forms stream terraces with surfaces 20 to 30 feet above the modern floodplain.
PENSAUKEN FORMATION (Pliocene)--Sand, minor silt and clay; yellow to reddish yellow; pebble gravel and minor cobble gravel, particularly at the base of the deposit. Sand is chiefly quartz with some weathered feldspar and minor glauconite and mica. Gravel is chiefly quartz and quartzite with some chert and ironstone, and minor amounts of deeply weathered sandstone, mudstone, diabase, and gneiss. Locally iron-cemented. Locally includes beds of dark-gray to reddish-yellow clay as much as 6 feet thick. As much as 140 feet thick. In erosional remnants of a dissected river plain.
PENSAUKEN FORMATION, GLAUCONITIC PHASE (Pliocene)--Sand, minor silt and clay; reddish yellow to yellowish brown; and pebble gravel. Sand is chiefly quartz with some glauconite and mica and minor feldspar. Gravel is chiefly quartz and quartzite with some chert. As much as 20 feet thick. A phase of the Pensauken Formation deposited by tributaries from the Coastal Plain.
WEATHERED COASTAL PLAIN FORMATIONS--Exposed sand and clay of Coastal Plain bedrock formations. May be overlain by thin, patchy alluvium and colluvium. Quartz, chert, and ironstone pebbles left from erosion of surficial deposits may be present on the surface and in the upper several feet of the formation.
WEATHERED SHALE AND SANDSTONE--Silty clay to sandy silt; reddish brown, pale red, reddish yellow, gray; with few to some angular pebble- and cobble-sized fragments of siltstone and sandstone, and a few quartz, chert, and ironstone pebbles left from erosion of surficial deposits. As much as 30 feet thick.
MAP SYMBOLS
Contact--Contacts of alluvium and swamp deposits are well-defined by landforms and are drawn from 1:12,000 scale aerial stereophotos. Contacts of other units are approximately located based on both landforms and field observation points.
Material observed in hand-auger hole, exposure, or excavation.
Shallow topographic basin--Of probable periglacial origin.
Well or boring--Upper number (italicized) is identifier, lower number is thickness of surficial material, in feet. Identifiers of the form '28-xxxx' are N. J. Department of Environmental Protection well permit numbers. Identifiers of the form '23-xxx' and '21-xxx' are from Gronberg, J. M., Birkelo, B. A., and Pucci, A. A., 1989, Selected borehole geophysical logs and drillers' logs, northern Coastal Plain of New Jersey: U. S. Geological Survey Open-File Report 87-243, 133 p. Identifiers of the form 'Sxx' and 'Wxx' are borings made for a proposed ship canal in the 1930s, and for sand-resource exploration, respectively. Logs of these borings are on file at the N.J. Geological Survey. Identifiers of the form 'HT4' are borings made by J. P. Owens and D. S. Powars of the U. S. Geological Survey in 1991 as part of a regional cooperative geologic mapping project with the N. J. Geological Survey.
Elevation of base of Pensauken Formation--In feet above sea level. Contour interval 20 feet. Dashed where eroded.
Paleocurrent measurement--Arrow indicates paleoflow direction, "x" indicates location of measurement. Measurements made on tabular, planar cross beds.
Thin eolian deposits--Veneer of fine sand and silt, generally less than 3 feet thick.
Bedrock strike ridge--Low ridge parallel to strike of bedrock. Drawn from airphotos.
x
MONMOUTH JUNCTIONPR
INC
ETO
N
ALLENTOWN
JAM
ESB
UR
G
Base from U. S. Geological Survey, 1954Photorevised 1981
Geology mapped 1991
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DEPARTMENT OF ENVIRONMENTAL PROTECTIONNEW JERSEY GEOLOGICAL SURVEY
SURFICIAL GEOLOGY OF THE HIGHTSTOWN QUADRANGLEMIDDLESEX AND MERCER COUNTIES, NEW JERSEY
OPEN-FILE MAP OFM 44
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sandstone and shale bedrock
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Coastal Plain Formations
200
100
0
-100
200
100
0
-100
ELEV
ATIO
N (f
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VERTICAL EXAGGERATION 20X
MIL
LSTO
NE
RIV
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HEA
THC
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BR
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28-2
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28-2
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28-1
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