Dufferin Island is an

island An island (or isle) is an isolated piece of habitat that is surrounded by a dramatically different habitat, such as water. Very small islands such as emergent land features on atolls can be called islets, skerries, cays or keys. An island ...

on the Central Coast of

British Columbia British Columbia (commonly abbreviated as BC) is the westernmost province of Canada, situated between the Pacific Ocean and the Rocky Mountains. It has a diverse geography, with rugged landscapes that include rocky coastlines, sandy beaches, ...

, Canada, on the south side of

Seaforth Channel , image = Ivory_Island_Lightstation_1.JPG , alt = Ivory Island Lighthouse , caption = Ivory Island Lighthouse at the northwest entrance to Seaforth Channel , pushpin_map = Canada British Columbia , pushpin_label_position = right , pushpin_ma ...

just northwest of Bella Bella. It was named in 1876 by

Captain Chatfield Captain is a title, an appellative for the commanding officer of a military unit; the supreme leader of a navy ship, merchant ship, aeroplane, spacecraft, or other vessel; or the commander of a port, fire or police department, election precinct, e ...

and the officers of HMS Amethyst after Frederick Hamilton-Temple-Blackwood. Dufferin Island is part of a volcanic area called the

Milbanke Sound Group The Milbanke Sound Group, also called the Milbanke Sound Cones, is an enigmatic group of five small basaltic volcanoes in the Kitimat Ranges of the Coast Mountains in British Columbia, Canada. Named for Milbanke Sound, this volcanic group straddle ...

which includes several monogenetic

cinder cone A cinder cone (or scoria cone) is a steep conical hill of loose pyroclastic fragments, such as volcanic clinkers, volcanic ash, or scoria that has been built around a volcanic vent. The pyroclastic fragments are formed by explosive eruptions o ...

Holocene The Holocene ( ) is the current geological epoch. It began approximately 11,650 cal years Before Present (), after the Last Glacial Period, which concluded with the Holocene glacial retreat. The Holocene and the preceding Pleistocene togethe ...

basalt Basalt (; ) is an aphanite, aphanitic (fine-grained) extrusive igneous rock formed from the rapid cooling of low-viscosity lava rich in magnesium and iron (mafic lava) exposed at or very near the planetary surface, surface of a terrestrial ...

ic lava flows from Dufferin Island overlie adjacent beach deposits.

References

Islands of British Columbia Central Coast of British Columbia {{BritishColumbiaCoast-geo-stub