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Unformatted text preview: ominent northeast-trending
ridge extending from Pennsylvania to the Shawangunk Mountains
in New York. In places its continuity is broken by wind gaps, such
as Culvers Gap, and water gaps, such as Delaware Water Gap.
The High Point Monument, which lies at the north end of the park
on the summit of Kittatinny Mountain, marks the highest point
in New Jersey at 1803 feet above sea level. Kittatinny Valley lies
east of the park and it in turn is bordered on its eastern side by a
rugged upland called the New Jersey Highlands. Wallpack Valley,
Wallpack Ridge, Minisink Valley, and the Pocono Plateau are found
to the west.
Shale, siltstone, sandstone, quartzite, and conglomerate
form the bedrock formations in High Point State Park. These
sedimentary rocks are 460 to 400 million years old, and consist
of material originally eroded from ancient lands and deposited as
sediment in streams and seas that once covered the area. These
loose materials were subsequently buried by younger sediments,
and over millions of years they eventually changed to solid rock.
Repeated uplift and subsequent erosion has exposed these rocks.
The strong northeast-trending ridge-and-valley topography in the
High Point area developed slowly, largely controlled by the structure
of the underlying rocks and their varying resistance to erosion.
Kittatinny Mountain, which is largely underlain by quartzite and
1 NJ 23 OR
BD PAKILL RD
Y RK NJ
ll B Mi Cedar
Swamp D ER High
Kill Lake OV CL Lk Marcia RIDGE RD PA
R K 653 NY
NJ DY VALLEY
KI PA R RD
RIVE AB Y
TA NJ EEN
RD ILLE Culvers Gap
Gap GR MO Area of
detail RE PA r Delaware Rive 84 1 NA
PLATEAU PA O
521 84 RD eR E war miles CL
10 0 S
MT N quartz-pebble conglomerate, very tough rocks resistant to erosion,
forms the highest land; whereas softer rock underlies the valleys.
During the past two million years, continental ice sheets from
the north modified the...
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