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  2. Geology of Manhattan Prong - Wikipedia

    en.wikipedia.org/wiki/Geology_of_Manhattan_Prong

    The bedrock underlying much of Manhattan consists of three rock formations: Fordham gneiss, Manhattan schist, and Tuckahoe marble (Inwood marble), which are well suited for the foundations of Manhattan's skyscrapers. [1] The Manhattan Prong and the Reading Prong are separated by the Newark Basin in the south, but the two features merge at the ...

  3. Rat Rock (Central Park) - Wikipedia

    en.wikipedia.org/wiki/Rat_Rock_(Central_Park)

    Rat Rock, also known as Umpire Rock, is an outcrop of Manhattan schist which protrudes from the bedrock in Central Park, Manhattan, New York City. It is named after the rats that used to swarm there at night. [1] It is located near the southwest corner of the park, south of the Heckscher Ballfields near the alignments of 62nd Street and Seventh ...

  4. Schist - Wikipedia

    en.wikipedia.org/wiki/Schist

    Schistosity is a thin layering of the rock produced by metamorphism (a foliation) that permits the rock to easily be split into flakes or slabs less than 5 to 10 millimeters (0.2 to 0.4 in) thick. [ 4 ] [ 5 ] The mineral grains in a schist are typically from 0.25 to 2 millimeters (0.01 to 0.08 in) in size [ 6 ] and so are easily seen with a 10 ...

  5. Rat Rock (Morningside Heights) - Wikipedia

    en.wikipedia.org/wiki/Rat_Rock_(Morningside_Heights)

    Rat Rock is an outcrop of Manhattan schist between 600 and 604 West 114th Street in the Morningside Heights neighborhood of Manhattan, New York City.The boulder measures approximately 30 feet (9.1 m) high and 100 feet (30 m) long; it is notable as one of the only remaining such rocks remaining in Manhattan's street grid. [1]

  6. List of rock types - Wikipedia

    en.wikipedia.org/wiki/List_of_rock_types

    Phyllite Banded gneiss with a dike of granite orthogneiss Marble Quartzite Manhattan Schist, from Southeastern New York Slate. Anthracite – Hard, compact variety of coal; Amphibolite – Metamorphic rock type; Blueschist – Type of metavolcanic rock; Cataclasite – Rock found at geological faults – A rock formed by faulting

  7. Geography of New York City - Wikipedia

    en.wikipedia.org/wiki/Geography_of_New_York_City

    The five boroughs of New York City. New York City is located on the coast of the Northeastern United States at the mouth of the Hudson River in southeastern New York state. It is located in the New York–New Jersey Harbor Estuary, the centerpiece of which is the New York Harbor, whose deep waters and sheltered bays helped the city grow in significance as a trading city.

  8. Gramercy Park - Wikipedia

    en.wikipedia.org/wiki/Gramercy_Park

    The Gramercy Park neighborhood is located in the part of Manhattan where the bedrock Manhattan schist is located deeper underground than it is above 29th Street and below Canal Street, and as a result, and under the influence of zoning laws, the tallest buildings in the area top out at around 20 stories, and older buildings of 3–6 floors are ...

  9. Palisades Sill - Wikipedia

    en.wikipedia.org/wiki/Palisades_Sill

    The outcrop of the Palisades Sill is quite recognizable for its prominent cliffs above the Hudson River; it is easily seen from the western portions of Manhattan. The exposure is approximately 80 kilometers (50 mi) long, most of it following the Hudson River. It first emerges in Staten Island in New York City. [1]