Qbs Qmm Qcm2 Qcm2 Qcm2 Qmm Qwcp Qwcp Qwcp Qwcp Qwcp Qtu Qcu Qtu Qtu Qtu Qwcp Qtu Qcm2 Qbs Qcm2 Qtu Qtu Qbs Qtu Qcm1 Qal Qcm2 Qcl Qcm2 Qwcp Qcu Qcm2 Qtu Qtu Qtu Qtu Qwcp Qtu Qcu Qwcp Qwcp Qwcp Qcm2 TQg TQg Qtu Qcm2 Qcu Qcu Qcm2 Qcm2 Qtu Qal Qcm2 Qcu Qwcp Qbs Qcm1 Qwcp Qcm2 Qbs Qtu TQg Qal Qe Qwcp Qtu Qcm2 Qtu Qwcp Qal Qwcp Qcm2 Qwcp Qwcp Qtu Qcm2 Qwcp Qcm1 Qwcp Qcm2 Qtu Qal TQg Qcm1 Qwcp Qcm1 Qcm2 Qcm1 Qcm1 Qcm1 Qtu Qwcp Qtu Qe Qtu Qcm2 Qtu Qcl Qcl Qtl Qe Qwcp Qtl Qcl Qcm1 Qcl Qwcp Qwcp Qwcp Qcl Qcl Qwcp TQg Qs Qs Qcu Qcal Qcl Qtu Qtl Qs Qcu Qcm1 Qcm2 Qtl Qtu Qwcp Qtl Qs Qtu Qcl Qcu Qwcp Qtl Qwcp Qs Qcl Qs Qe TQg Qcu Qcm2 TQg Qwcp Tg Qtl Tg Qal Qtl Qtu Qcm1 Tg Qcm2 Qcm1 Qtl Qal Qe Qtu Qtl Qal Qal Qtl Qtu Qbs Qbs Qcal Qcal Qcu Qwcp Qwcp Qal Qal Qtu Qwcp Qtl Qe Qal Qtl Qtl Qtu Qtu Qtu Qal Qal Qwcp Qwcp Qal Qal Qal Qwcp Qwcp Qcm2 Qwcp Tg Qal Qwcp Qtu Qwcp Qtu Qtl Tg Qs TQg Qal Qtl Qwcp 15005 15007 15436 16298 12518 12181 10182 1921 7534 14577 18329 15487 14061 18271 17320 15142 20985 17263 4847 15004 11019 15415 961 7172 15364 11955 3487 11855 18231 B7 B1 B3 22063 10737 15700 15273 14157 19103 15346 9161 9 18568 19260 945 15430 64 20242 35 45 25 10 18 10 33 23 20 16 30 10 11 52 50 107 11 30 20 32 40 30 30 25 35 20 15 50 5 0 30 25 30 30 24 25 26 24 20 23 24 17 7 31 38 30 47 Qtu Qbs Qal Qal Qbs Qbs Qbs Qal Qwcp Qal SURFICIAL GEOLOGY OF THE LONG BRANCH QUADRANGLE MONMOUTH COUNTY, NEW JERSEY by Scott D. Stanford 2000 DESCRIPTION OF MAP UNITS DESCRIPTION OF MAP SYMBOLS Qal Qs Qcal Qbs Qmm Qe Qtl Qtu Qcl Qcu Qcm1 Qcm2 TQg Tuc Qwcp Tg Age 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 necessarilty 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 50 feet thick. In road and railroad embankments, solid-waste landfills, and made land. 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 15 feet thick. Deposited in floodplains, channels, and ground-water seepage areas. SWAMP AND MARSH DEPOSITS (Holocene and late Pleistocene)--Freshwater 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 15 feet thick. BEACH AND NEARSHORE MARINE SAND (Holocene)--Sand, very pale brown to light gray; and pebble gravel. As much as 100 feet thick but generally less than 20 feet thick. Deposited during Holocene sea-level rise. Underlain by estuarine deposits in places. ESTUARINE DEPOSITS (Holocene)--Salt-marsh peat, organic silt and clay; dark brown to black; sand and minor pebble gravel; very pale brown, white, gray. As much as 100 feet thick. Deposited during Holocene sea-level rise. Commonly underlain by lower terrace deposits. EOLIAN DEPOSITS (late Pleistocene and Holocene)--Fine-to-medium sand, very pale brown to reddish yellow. Sand is chiefly quartz with minor glauconite and mica in places. As much as 20 feet thick. Forms dunes and sand sheets. 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. 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 20 feet thick, generally less than 10 feet thick. Forms aprons graded to lower terraces or the modern floodplain. CAPE MAY FORMATION, UNIT 2 (late Pleistocene)--Sand, minor silt and clay; very pale brown, yellow, white, olive yellow; and pebble gravel. Sand is chiefly quartz with minor glauconite and mica; gravel is quartz and quartzite. As much as 50 feet thick. Forms a shore-facing terrace with surface elevation between 15 and 40 feet. Deposited in beach and estuarine settings during the Sangamon sea-level highstand between 120,000 and 130,000 years ago. CAPE MAY FORMATION, UNIT 1 (middle? Pleistocene)--Sand, minor silt and clay; very pale brown, yellow, reddish yellow; and pebble gravel. Sand is chiefly quartz, with minor glauconite and mica; gravel is quartz and quartzite. As much as 30 feet thick. Forms a shore-fronting marine terrace with surface elevation between 50 and 75 feet. Deposited in beach and estuarine settings during a middle? Pleistocene sea-level highstand. UPPER TERRACE DEPOSITS (middle Pleistocene)--Sand, minor silt; yellow, reddish yellow; and pebble gravel. Sand is chiefly quartz; glauconite and mica are generally less abundant than in the lower terrace deposits and alluvium. Gravel is quartz, quartzite, and minor ironstone. As much as 20 feet thick. Forms terraces with surfaces 20 to 50 feet above the modern floodplain. UPPER COLLUVIUM (middle Pleistocene)--Sand, silt, minor clay; pale brown, yellow, reddish yellow; some quartz, quartzite and ironstone pebbles. As much as 20 feet thick. Forms aprons graded to upper terraces. UPLAND GRAVEL, LOWER PHASE (late Pliocene-middle Pleistocene)--Sand, minor silt; yellow to reddish yellow; and pebble gravel. Sand is chiefly quartz with minor glauconite and mica; gravel is quartz and quartzite. As much as 20 feet thick. Caps lower uplands and interfluves. UPLAND GRAVEL (Pliocene-early Pleistocene)--Sand, yellow to reddish yellow, and pebble gravel; minor fine-cobble gravel. Sand is chiefly quartz, with minor glauconite in places; gravel is quartz and quartzite with minor weathered chert. Locally iron-cemented. As much as 20 feet thick. In erosional remnants on hilltops and interfluves. UPLAND COLLUVIUM (Pliocene-early Pleistocene)--Sand, minor silt; white, yellow, reddish yellow; with quartz, quartzite, and ironstone pebbles, and minor weathered chert. As much as 10 feet thick. In erosional remnants on sloping interfluves and ridgetops, graded to upland gravel deposits. WEATHERED COASTAL PLAIN FORMATIONS--Exposed sand and clay of Coastal Plain bedrock formations. May be overlain by thin, patchy alluvium and colluvium. Quartz and ironstone pebbles left from erosion of surficial deposits may be present on the surface and in the upper several feet of the formation. Contact--Contacts of alluvium, beach deposits, and estuarine 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. Well or boring--Upper number is identifier, lower number is thickness of surficial material. Identifers of the form ‘xxxx’ are N. J. Department of Environmental Protection well permit numbers (all carry the prefix ‘29-’). Identifiers of the form ‘xx-xx-xxx’ are N. J. Atlas Sheet grid locations of entries in the N. J. Geological Survey permanent note collection. Identifiers of the form ‘Bxx’ are miscellaneous borings on file at the N. J. Geological Survey. Shallow topographic basin--Of probable periglacial origin. Basins within eolian deposits may be of eolian origin. Drawn from 1:12,000-scale aerial stereophotos taken in 1979. 7000 FEET 1000 1000 0 2000 3000 4000 5000 6000 .5 1 KILOMETER 1 0 SCALE 1:24000 1/2 1 0 1 MILE CONTOUR INTERVAL 20 FEET NATIONAL GEODETIC VERTICAL DATUM OF 1929 N E W J E R S E Y G E O L O G I C A L S U R V E Y 1 8 3 5 Quadrangle Location New Jersey APPROXIMATE MEAN DECLINATION, 1981 MAGNETIC NORTH TRUE NORTH 12˚ 74º07'30" 40º22'30" 74º00'00" 40º22'30" 40º15'00" 74º00'00" Geology mapped 1994. 74º07'30" 40º15'00" Base map from U. S. Geological Survey, 1954. Photorevised 1981. DEPARTMENT OF ENVIRONMENTAL PROTECTION DIVISION OF SCIENCE, RESEARCH, AND TECHNOLOGY NEW JERSEY GEOLOGICAL SURVEY SURFICAL GEOLOGY OF THE LONG BRANCH QUADRANGLE MONMOUTH COUNTY, NEW JERSEY OPEN FILE MAP OFM 38 SANDY HOOK MARLBORO ASBURY PARK