Hunterdon County is a county located in the western section of the U.S. state of New Jersey. At the 2020 census, the county was the state's 18th-most populous county, with a population of 128,947, its highest decennial count ever and an increase of 598 (+0.5%) from the 2010 census count of 128,349, which in turn reflected an increase of 6,360 (5.2%) from the 121,989 counted in the 2000 census. Its county seat is Flemington. The county is part of the Central Jersey region.
Clinton Township is a township in Hunterdon County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 13,505, an increase of 27 (+0.2%) from the 2010 census count of 13,478, which in turn reflected an increase of 521 (+4.0%) from the 12,957 counted in the 2000 census.
Readington Township is a township located in the easternmost portion of Hunterdon County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 16,128, an increase of two people (+0.0%) from the 2010 census count of 16,126, which in turn reflected an increase of 323 (+2.0%) from the 15,803 counted in the 2000 census.
The Watchung Mountains are a group of three long low ridges of volcanic origin, between 400 and 500 feet high, lying parallel to each other in northern New Jersey in the United States. The name is derived from the American Native Lenape name for them, Wach Unks. The Watchung Mountains are known for their numerous scenic vistas overlooking the skylines of New York City and Newark, New Jersey, as well as their isolated ecosystems containing rare plants, endangered wildlife, rich minerals, and globally imperiled trap rock glade communities. The ridges traditionally contained the westward spread of urbanization, forming a significant geologic barrier beyond the piedmont west of the Hudson River; the town of Newark, for example, once included lands from the Hudson to the base of the mountains. Later treaties moved the boundary to the top of the mountain, to include the springs.
The Round Valley Reservoir in Clinton Township in Hunterdon County, New Jersey, United States, was formed in 1960 when the New Jersey Water Authority constructed two large dams and flooded a large valley. The reservoir is named after the naturally formed circular valley surrounded by Cushetunk Mountain. The deep valley was caused by erosion of the soft sedimentary rock. The surrounding ridges of Cushetunk Mountain endure because they were underlaid with dense and durable volcanic rock diabase that cooled slowly under the surface of the Earth. The reservoir covers what used to be a farming community, with remains of a school and a church on the lake floor among other buildings.
Interstate 78 (I-78) is an east–west route stretching from Union Township, Lebanon County, Pennsylvania, to New York City. In New Jersey, I-78 is called the Phillipsburg–Newark Expressway and the Newark Bay–Hudson County Extension of the New Jersey Turnpike. The highway runs for 67.83 miles (109.16 km) in the northern part of the state of New Jersey from the I-78 Toll Bridge over the Delaware River at the Pennsylvania state line in Phillipsburg, Warren County, east to the Holland Tunnel under the Hudson River at the New York state line in Jersey City, Hudson County. The Phillipsburg–Newark Expressway portion of I-78, formally called the Lightning Division Memorial Highway, runs from the Phillipsburg area east across rural areas of western New Jersey before entering suburban areas in Somerset County. The road crosses the Watchung Mountains, widening into a local–express lane configuration at Route 24 as it continues through urban areas to Newark. Here, I-78 intersects the mainline of the New Jersey Turnpike (I-95) and becomes the Newark Bay Extension, crossing the Newark Bay Bridge and continuing to Jersey City. The route, along with Route 139, follows a one-way pair of surface streets to the Holland Tunnel.
Trap rock, also known as either trapp or trap, is any dark-colored, fine-grained, non-granitic intrusive or extrusive igneous rock. Types of trap rock include basalt, peridotite, diabase, and gabbro. Trap is also used to refer to flood (plateau) basalts, e.g. the Deccan Traps and Siberian Traps. The erosion of trap rock created by the stacking of successive lava flows often created a distinct stairstep landscape from which the term trap was derived from the Swedish word trappa, which means "stairway".
The Sourland Mountain Preserve is located on Sourland Mountain, in the Sourlands region of New Jersey. It is within Hillsborough Township and Montgomery Township of Somerset County. The largest donation of land was made by Norma Gilbert Farr, trustee of the Linus R. Gilbert Foundation. The Farr family has donated over 3,000 acres to the Sourland Mountain Preserve and the Somerset County Parks Commission.
Sourland Mountain is a 17 miles (27 km) long ridge in central New Jersey, U.S., extending from the Delaware River at Lambertville to the western end of Hillsborough Township near the community of Neshanic, through Montgomery Township and into Hopewell Township in Mercer County. It comprises the largest contiguous forest in Central Jersey, nearly 90 square miles (233 km2) in area. The highest point is only 568 feet (173 m) above sea level, but the way it rises steeply from the surrounding farmland has earned it the title of 'mountain'. The ridge itself sits within a larger area of rough terrain called The Sourlands.
Holland Brook is a tributary of the South Branch Raritan River in Hunterdon and Somerset Counties, New Jersey in the United States.
The Palisades Sill is a Triassic, 200 Ma diabase intrusion. It extends through portions of New York and New Jersey. It is most noteworthy for The Palisades, the cliffs that rise steeply above the western bank of the Hudson River. The ideal location and accessibility of the sill, as well as its unique features, have generated much attention from nature enthusiasts, rock climbers, and geologists alike.
The Geology of Pennsylvania consists of six distinct physiographic provinces, three of which are subdivided into different sections. Each province has its own economic advantages and geologic hazards and plays an important role in shaping everyday life in the state. From the southeast corner to the northwest corner of the state, the include: the Atlantic Plain Province province, the Piedmont Province, the New England Province, the Ridge and Valley Province, the Appalachain Province, and the Central Lowlands Province.
New Jersey is a very geologically and geographically diverse region in the United States' Middle Atlantic region, offering variety from the Appalachian Mountains and the Highlands in the state's northwest, to the Atlantic Coastal Plain region that encompasses both the Pine Barrens and the Jersey Shore. The state's geological features have impacted the course of settlement, development, commerce and industry over the past four centuries.
Pleasant Run is a tributary of the South Branch Raritan River in central New Jersey in the United States.
The Watchung Outliers include six areas of isolated low hills and rock outcrops of volcanic and sedimentary origin in the U.S. states of New York, New Jersey, and Pennsylvania. These geologic outliers are primarily diminutive and detached remnants of the Triassic/Jurassic age Watchung Mountain basalt flows with intervening layers of sedimentary rock. All six of the outliers are found along the western edge of the Newark Basin, occupying small synclines adjacent to the Ramapo fault system. The outliers, from north to south, are known as: Ladentown, Union Hill, New Germantown/Oldwick, Prospect Hill, Sand Brook, and Jacksonwald.
The Sourlands is a region in the central portion of the U.S. state of New Jersey that includes portions of Hunterdon County, Mercer County, and Somerset County. It is centered on Sourland Mountain and comprises parts of Lambertville, East Amwell, West Amwell, Hillsborough, Hopewell Boro, Hopewell Township, and Montgomery Township. The region is flanked by the Hopewell Fault to the south and Amwell Valley to the north that runs from Mount Airy to an area just west of Flagtown and a diabase formation running from Lambertville to Mount Airy. The Sourland also include a hilly area towards the southwest called Pleasant Valley, with a number of farms. Although much of the Sourlands is not conducive to farming, Pleasant Valley and the slopes on the surrounding ridges have a number of farms. The slopes of the ridge to the north are also home to Unionville Vineyard.
The Culpeper Basin is one of the Newark Supergroup's Triassic rift basins. It lies east of the Appalachian Mountains and extends from the Madison County—Orange County line in Virginia to Frederick, Maryland. A diverse group of sedimentary rocks including siltstone, sandstone, and conglomerate within the basin were intruded by igneous rocks, which caused thermal metamorphism at the contact with sedimentary rock.
Threemile Run is a tributary of the Tohickon Creek in Bucks County, Pennsylvania in the United States and is part of the Delaware River watershed.
Dimple Creek is a tributary of the Tohickon Creek in Haycock Township, Bucks County, Pennsylvania in the United States. It is part of the Delaware River watershed.
The geology of the State of New York is made up of ancient Precambrian crystalline basement rock, forming the Adirondack Mountains and the bedrock of much of the state. These rocks experienced numerous deformations during mountain building events and much of the region was flooded by shallow seas depositing thick sequences of sedimentary rock during the Paleozoic. Fewer rocks have deposited since the Mesozoic as several kilometers of rock have eroded into the continental shelf and Atlantic coastal plain, although volcanic and sedimentary rocks in the Newark Basin are a prominent fossil-bearing feature near New York City from the Mesozoic rifting of the supercontinent Pangea.
