Ronkonkoma Moraine

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

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

Description

The Ronkonkoma Moraine, a terminal moraine, was formed 21,000 to 22,000 years ago during the Wisconsin Glacial Episode. It predates the Harbor Hill Moraine - which cuts through the Ronkonkoma Moraine's western portions - by 3,000 years.[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

See also

References

  1. ↑ Geological Survey: Quaternary History of the New York Bight: retrieved 2013-08-23.
  2. 1 2 "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.
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