Dufferin Island is an 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...

 on the coast of the Canadian province

Provinces and territories of Canada

The provinces and territories of Canada combine to make up the world's second-largest country by area. There are ten provinces and three territories...

 of British Columbia

British Columbia

British Columbia is the westernmost of Canada's provinces and is known for its natural beauty, as reflected in its Latin motto, Splendor sine occasu . Its name was chosen by Queen Victoria in 1858...

. It is located on the south side of Seaforth Channel just northwest of Bella Bella

Bella Bella, British Columbia

Bella Bella, also known as Waglisla, is an unincorporated community and Indian Reserve community located within Bella Bella Indian Reserve No. 1 on the east coast of Campbell Island in the Central Coast region of British Columbia, Canada. Bella Bella is located north of Port Hardy, on Vancouver...

. Dufferin Island was named in 1876 by Captain Chatfield and the officers of HMS Amethyst

HMS Amethyst

Six ships of the Royal Navy have been named HMS Amethyst, whilst another was planned: was a 36-gun fifth-rate frigate, originally the French Perle captured in 1793 and wrecked in 1795. was a Penelope-class 36-gun fifth rate launched in 1799 and wrecked in 1811. was a Spartan-class 26-gun sixth rate...

 after Fredrick Temple.

Dufferin Island is part of a volcanic area called the Milbanke Sound Group

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 straddles on at least four small uninhabited islands,...

 which includes several monogenetic

Monogenetic volcanic field

A monogenetic volcanic field is a volcanic field of small, scattered volcanic vents. These volcanic fields, containing numerous monogenetic volcanoes, are noted for having only one short eruptive event at each volcano, as opposed to regular volcanoes that have several eruptions from the same vent...

 cinder cone

Cinder cone

According to the , Cinder Cone is the proper name of 1 cinder cone in Canada and 7 cinder cones in the United States:In Canada: Cinder Cone In the United States:...

s. Holocene

Holocene

The Holocene is a geological epoch which began at the end of the Pleistocene and continues to the present. The Holocene is part of the Quaternary period. Its name comes from the Greek words and , meaning "entirely recent"...

 basalt

Basalt

Basalt is a common extrusive volcanic rock. It is usually grey to black and fine-grained due to rapid cooling of lava at the surface of a planet. It may be porphyritic containing larger crystals in a fine matrix, or vesicular, or frothy scoria. Unweathered basalt is black or grey...

ic lava flows from Dufferin Island overlie adjacent beach deposits.