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The Ronkonkoma Moraine, in the
The Ronkonkoma Moraine and the Harbor Hill Moraine intersect at Lake Success in western Nassau County. Today, the moraine is most prominent in Suffolk County, where it traverses the center of Long Island and forms the South Fork.
The Ronkonkoma Moraine, in the geography of Long Island
Long Island is in southeastern New York, United States, separated from the rest of the state by the East River and from Connecticut by Long Island Sound. Long Island contains four counties, of which the western two are boroughs (Queens and Brookl ...
, forms the southern of two ridges along Long Island
Long Island is a densely populated island in the southeastern region of the U.S. state of New York (state), New York, part of the New York metropolitan area. With over 8 million people, Long Island is the most populous island in the United Sta ...
's "backbone."
Description
The Ronkonkoma Moraine, aterminal moraine
A terminal moraine, also called end moraine, is a type of moraine that forms at the terminal (edge) of a glacier, marking its maximum advance. At this point, debris that has accumulated by plucking and abrasion, has been pushed by the front edge ...
, predates the Harbor Hill Moraine
The Harbor Hill Moraine, in the geography of Long Island, forms the northern of two ridges along the "backbone" of Long Island.
Description
The Harbor Hill Moraine, skirting the North Shore, represents the terminal moraine of the most recen ...
(which reached Long Island during the Wisconsin Glacial Episode
The Wisconsin Glacial Episode, also called the Wisconsin glaciation, was the most recent glacial period of the North American ice sheet complex. This advance included the Cordilleran Ice Sheet, which nucleated in the northern North American Cord ...
); the Harbor Hill Moraine cut through the Ronkonkoma Moraine's western portions.Garvies Point Museum and Reserve: the Geology of Long IslandThe Ronkonkoma Moraine and the Harbor Hill Moraine intersect at Lake Success in western Nassau County. Today, the moraine is most prominent in Suffolk County, where it traverses the center of Long Island and forms the South Fork.
Notable summits
* Bald Hill – 331 ft (101 m)("The Bald Hills near Holtsville are the highest land in Suffolk County") *Telescope Hill
Telescope Hill, at , is the highest point of elevation in the Town of Brookhaven, on Long Island, New York, United States. The hill is located at the end of Tower Hill Ave., on the border of the ZIP codes of the hamlets of Selden and Farmingv ...
– 334 feet (102 m)
See also
*Terminal moraine
A terminal moraine, also called end moraine, is a type of moraine that forms at the terminal (edge) of a glacier, marking its maximum advance. At this point, debris that has accumulated by plucking and abrasion, has been pushed by the front edge ...
* List of glacial moraines
This a partial list of glacial moraines. They are arranged by continents and divided by related hydrologic basins. This list is incomplete. Please improve the listing.
North America
Moraines of the Great Lakes Region
Lake Ontario Basin
* Oak ...
References