The Ronkonkoma Moraine, in the geography of Long Island, forms the southern of two ridges along Long Island's "backbone."[1]

A map showing Long Island's topography and the generalized locations of the glacial moraines.

Description

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The Ronkonkoma Moraine, a terminal moraine, predates the Harbor Hill Moraine (which reached Long Island during the Wisconsin Glacial Episode); the Harbor Hill Moraine cut through the Ronkonkoma Moraine's western portions.[2]

The Ronkonkoma Moraine and the Harbor Hill Moraine intersect at Lake Success in western Nassau County.[2] Today, the moraine is most prominent in Suffolk County, where it traverses the center of Long Island and forms the South Fork.[3]

Notable summits

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See also

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References

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  1. ^ Geological Survey: Quaternary History of the New York Bight: retrieved 2013-08-23.
  2. ^ a b "Geology of Long Island". Garvies Point Museum and Preserve.
  3. ^ Ph.D, Kathleen M. Fallon (2021-09-24). "Long Island's Dynamic History". ArcGIS StoryMaps. Retrieved 2021-12-20.
  4. ^ "Holtsville Site The Better One". Suffolk County News. March 7, 1913.("The Bald Hills near Holtsville are the highest land in Suffolk County")
  5. ^ "Sixty-Seven Fires Reported Last Year From The Selden Observation Tower". The Mid-Island Mail. August 15, 1935.