Spectrum Range facts for kids

Quick facts for kids Spectrum Range
Satellite photo of the Spectrum Range
Highest point
Peak	Yeda Peak
Elevation	2,430 m (7,970 ft)
Geography
Spectrum Range Location in British Columbia
Country	Canada
Province	British Columbia
Parent range	Tahltan Highland (southwestern Stikine Plateau)
Geology
Orogeny	Volcanism
Age of rock	Pliocene-to-Holocene
Type of rock	Shield volcano

The Spectrum Range, formerly called the Spectrum Mountains and the Rainbow Mountains, is a subrange of the Tahltan Highland in the Stikine Country of northwestern British Columbia, 20 km west of the Stewart-Cassiar Highway, south of Mount Edziza and north of the Arctic Lake Plateau. The Spectrum Range falls within Mount Edziza Provincial Park. The range is lightly glaciated, as compared to the other ranges to the west. It is accessible only by foot or via helicopter; there are no roads to the range.

Geology

Like the Rainbow and Itcha–Ilgachuz Ranges at the western end of the Chilcotin Plateau farther south, the range's name derives from the brilliant colours that are symptomatic from heavy mineralization comprising the material forming the range.

The Spectrum Range is one of four large stratovolcanoes that make up the Mount Edziza volcanic complex. A predominantly lava dome overlies a basal shield volcano. The range is Pliocene in age and on its southwestern flank contains Pleistocene subglacial and subaerial cones and its northwest and southwest sides contain Holocene pyroclastic cones and lava flows. The youngest feature in the volcanic complex could be The Ash Pit.

Volcanoes

The volcanoes that make up the Spectrum Range include:

• Nahta Cone
• The Ash Pit
• Mess Lake
• Outcast Hill
• Thaw Hill
• Source Hill
• Tadekho Hill
• Wetalth Ridge
• Exile Hill
• Spectrum Dome
• Little Iskut
• Yeda Peak