Tjörnes () is a

peninsula A peninsula is a landform that extends from a mainland and is only connected to land on one side. Peninsulas exist on each continent. The largest peninsula in the world is the Arabian Peninsula. Etymology The word ''peninsula'' derives , . T ...

situated at the northeast of

Iceland Iceland is a Nordic countries, Nordic island country between the Atlantic Ocean, North Atlantic and Arctic Oceans, on the Mid-Atlantic Ridge between North America and Europe. It is culturally and politically linked with Europe and is the regi ...

, between the

fjords In physical geography, a fjord (also spelled fiord in New Zealand English; ) is a long, narrow sea inlet with steep sides or cliffs, created by a glacier. Fjords exist on the coasts of Antarctica, the Arctic, and surrounding landmasses of the no ...

Öxarfjörður Öxarfjörður () is a broad fjord in northeastern Iceland, situated between the Tjörnes and Melrakkaslétta headlands. Geography Öxarfjörður is encircled by mountain ranges to the west and east, and the Gjástykki lava fields and an area ...

and

Skjálfandi Skjálfandi (; also known as Skjálfandaflói ) is a bay in northern Iceland, with some of the characteristics of a fjord. The Icelandic word ''Skjálfandi'' literally translates to ''trembling'' which may refer to earthquakes in the area. The ...

. Tjörnes is known for its particularly dense population of

Rock Ptarmigan The rock ptarmigan (''Lagopus muta'') is a medium-sized game bird in the grouse family. It is known simply as the ptarmigan in Europe. It is the official bird for the Canadian territory of Nunavut, where it is known as the ''aqiggiq'' (ᐊᕿ� ...

and the rich

fossil A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserve ...

record of

Miocene The Miocene ( ) is the first epoch (geology), geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and mea ...

Pliocene The Pliocene ( ; also Pleiocene) is the epoch (geology), epoch in the geologic time scale that extends from 5.33 to 2.58Iceland Iceland is a Nordic countries, Nordic island country between the Atlantic Ocean, North Atlantic and Arctic Oceans, on the Mid-Atlantic Ridge between North America and Europe. It is culturally and politically linked with Europe and is the regi ...

named the ''Tjornes Fracture Zone''. It is a series of underwater fissure vents that last erupted in 1868.

References

Peninsulas of Iceland {{Iceland-geo-stub