Thimble Islands
Overview
Hashima Island
For the island in Connecticut, see Thimble Islands., commonly called Gunkanjima or Gunkanshima , is one among 505 uninhabited islands in the Nagasaki Prefecture about 15 kilometers from Nagasaki itself....
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The Thimble Islands is an archipelago
Archipelago
An archipelago , sometimes called an island group, is a chain or cluster of islands. The word archipelago is derived from the Greek ἄρχι- – arkhi- and πέλαγος – pélagos through the Italian arcipelago...
consisting of small island
Island
An island or isle is any piece of sub-continental land that is surrounded by water. Very small islands such as emergent land features on atolls can be called islets, cays or keys. An island in a river or lake may be called an eyot , or holm...
s in Long Island Sound
Long Island Sound
Long Island Sound is an estuary of the Atlantic Ocean, located in the United States between Connecticut to the north and Long Island, New York to the south. The mouth of the Connecticut River at Old Saybrook, Connecticut, empties into the sound. On its western end the sound is bounded by the Bronx...
, located in and around the harbor of Stony Creek
Stony Creek, Connecticut
Stony Creek is an affluent, shorefront section of Branford, Connecticut, centered on a harbor on Long Island Sound, in the southeast corner of the town. Stony Creek residents feel it has its own distinct feeling, that of a small village with a traditional timeless and quaint charm...
in the southeast corner of Branford, Connecticut
Branford, Connecticut
-Landmarks and attractions:Branford has six historic districts that are listed on the U.S. National Register of Historic Places . These include buildings in Federal, Arts and Crafts, and Queen Anne styles of architecture...
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The archipelago of islands made up of Stony Creek pink granite bedrock
Bedrock
In stratigraphy, bedrock is the native consolidated rock underlying the surface of a terrestrial planet, usually the Earth. Above the bedrock is usually an area of broken and weathered unconsolidated rock in the basal subsoil...
were once the tops of hills prior to the last ice age. As a result, the Thimble Islands are much more stable than most other islands in Long Island Sound
Long Island Sound
Long Island Sound is an estuary of the Atlantic Ocean, located in the United States between Connecticut to the north and Long Island, New York to the south. The mouth of the Connecticut River at Old Saybrook, Connecticut, empties into the sound. On its western end the sound is bounded by the Bronx...
, which are terminal moraine
Terminal moraine
A terminal moraine, also called end moraine, is a moraine that forms at the end of the glacier called the snout.Terminal moraines mark the maximum advance of the glacier. An end moraine is at the present boundary of the glacier....
s of rubble deposited by retreating glacier
Glacier
A glacier is a large persistent body of ice that forms where the accumulation of snow exceeds its ablation over many years, often centuries. At least 0.1 km² in area and 50 m thick, but often much larger, a glacier slowly deforms and flows due to stresses induced by its weight...
s.
Known to the Mattabeseck
Mattabeseck
In early Dutch maps of the American colonies from the early 17th century, the term Mattabeseck is applied to an area of land just to the north of New Haven, Connecticut, between the Housatonic and Connecticut rivers...
Indians as Kuttomquosh, "the beautiful sea rocks," they consist of a jumble of granite
Granite
Granite is a common and widely occurring type of intrusive, felsic, igneous rock. Granite usually has a medium- to coarse-grained texture. Occasionally some individual crystals are larger than the groundmass, in which case the texture is known as porphyritic. A granitic rock with a porphyritic...
rocks, ledges and outcroppings resulting from glaciation, numbering between 100 and 365 depending on where the line is drawn between an island and a mere rock.
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