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The Palisades Sill as seen from the Palisades Interstate Parkway. The Hudson River is the background. 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.
North of Fort Lee, the Palisades are part of Palisades Interstate Park and are a National Natural Landmark. [2] The Palisades are among the most dramatic geologic features in the vicinity of New York City, forming a canyon of the Hudson north of the George Washington Bridge, as well as providing a vista of the Manhattan skyline.
The National Natural Landmarks in New York include 29 of the more than 600 National Natural Landmarks (NNLs) in the United States. Twenty-seven landmarks are contained entirely within New York; the two exceptions are the Palisades of the Hudson which extends along the Hudson River into New Jersey , and the Chazy Fossil Reef which spans several ...
A USGS geological map of New Jersey and the surrounding region; the Newark Basin is outlined in white USGS Stratigraphic Column of the Newark Basin The Newark Basin is a sediment -filled rift basin located mainly in northern New Jersey but also stretching into south-eastern Pennsylvania and southern New York .
They include the Palisades Sill, a Triassic, 200-Ma diabase intrusion that forms the Palisades along 80 kilometers (50 mi) of the Hudson River in New York and New Jersey. Vast areas of trap rock in the form of thick lava flows and other volcanic rocks comprise the Deccan Traps of India and Siberian Traps of Russia. [6]
Graniteville Quarry Park is a public park operated by the New York City Department ... A chunk of xenolith that fell into the Palisades sill diabase formed a third ...
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 ...
The Palisades Sill, in northeastern New Jersey and southeastern New York, was not only formed under similar circumstances to Sourland Mountain, it is at least partly contiguous with it. The ridge forming Mount Rose, Rocky Hill, and Ten Mile Run Mountain, is a continuation of the Palisades which connects to Pennington Mountain. [9]