Tombolo

From Wikipedia, the free encyclopedia

For the Italian city, see Tombolo, Italy.

Tombolo at Stockton Island, Ashland County (Wisconsin).

Tombolo at Stockton Island, Ashland County (Wisconsin).

Satelite view of Chesil Beach (shown as a long blue line) in Dorset, England (Landsat image viewed using NASA World Wind software)

Satelite view of Chesil Beach (shown as a long blue line) in Dorset, England (Landsat image viewed using NASA World Wind software)

A tombolo is a deposition landform such as a spit or bar which forms a narrow piece of land between an island or offshore rock and a mainland shore, or between two islands or offshore rocks. They usually form because the island causes wave refraction, depositing sand and shingle moved by longshore drift in each direction around the island where the waves meet. Eustatic sea level rise may also contribute material as material is pushed up as the sea level rises, as in the case of Chesil Beach which connects the Isle of Portland to Dorset in England which is notable as the shingle ridge is parallel rather than perpendicular to the coast.

Point Peron, Shoalwater, Western Australia
The isthmus at Aden, Yemen
Aupouri Peninsula, New Zealand
Barrenjoey Headland, Pittwater, New South Wales, Australia
Chappaquiddick Island, Martha's Vineyard, Massachusetts
Charles Island, Connecticut
Chesil Beach, Dorset, England
Cheung Chau, Hong Kong
Fingal Bay, New South Wales, Australia
Howth Head, Dublin, Republic of Ireland
Kettla Ness, Burra, Shetland Islands, Scotland
Llandudno, Wales
Maharees, Dingle Peninsula, Republic of Ireland
Miquelon, Saint-Pierre and Miquelon
Monemvasia, Laconia, Peloponnese, Greece
Mont Saint-Michel, Normandy, France
Mount Maunganui, New Zealand
Nahant, Massachusetts (a natural tombolo, but connected to the mainland by a causeway)
Palisadoes, Kingston, Jamaica
Presqu'ile Provincial Park, Ontario, Canada
Quiberon, France
St Ninian's Isle, Shetland Islands, Scotland
Yei of Huney, Huney, Shetland Islands, Scotland
Langness, Castletown Bay, Isle of Man

Isthmus
Bar

Geology.About.com's page on tombolos (useful for its descriptive photograph)
Photograph: Chesil Beach
Photograph: Chesil Beach and the Isle of Portland

Retrieved from "http://en.wikipedia.org../../../t/o/m/Tombolo.html"

Categories: Landforms | Coastal geography

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