Pebble Creek Formation is a

volcanic A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates a ...

formation in the Garibaldi Volcanic Belt created when the

Mount Meager massif The Mount Meager massif is a group of volcanic peaks in the of the Coast Mountains in southwestern British Columbia, Canada. Part of the Cascade Volcanic Arc of western North America, it is located north of Vancouver at the northern end of the P ...

erupted about 2,350 years ago and by two

rock Rock most often refers to: * Rock (geology), a naturally occurring solid aggregate of minerals or mineraloids * Rock music, a genre of popular music Rock or Rocks may also refer to: Places United Kingdom * Rock, Caerphilly, a location in Wales ...

avalanche An avalanche is a rapid flow of snow down a slope, such as a hill or mountain. Avalanches can be set off spontaneously, by such factors as increased precipitation or snowpack weakening, or by external means such as humans, animals, and eart ...

deposits.CAT.INIST: Pebble Creek Formation
Retrieved on 2007-06-17 The two rock avalanches are not linked with the 2,350 BP eruption, although the post-eruption avalanche may have its causes in the over-steepened slopes produced by the explosive period of the eruption. The rocks of the Pebble Creek Formation are the youngest known of the Mount Meager volcanic complex, and are made of

dacite Dacite () is a volcanic rock formed by rapid solidification of lava that is high in silica and low in alkali metal oxides. It has a fine-grained (aphanitic) to porphyritic texture and is intermediate in composition between andesite and rhyolite ...

. The formation includes a dacite lava flow,

pyroclastic flow A pyroclastic flow (also known as a pyroclastic density current or a pyroclastic cloud) is a fast-moving current of hot gas and volcanic matter (collectively known as tephra) that flows along the ground away from a volcano at average speeds of b ...

s, lahars and fallout

pumice Pumice (), called pumicite in its powdered or dust form, is a volcanic rock that consists of highly vesicular rough-textured volcanic glass, which may or may not contain crystals. It is typically light-colored. Scoria is another vesicular v ...

Pebble Creek Hot Springs A pebble is a clast of rock with a particle size of based on the Udden-Wentworth scale of sedimentology. Pebbles are generally considered larger than granules ( in diameter) and smaller than cobbles ( in diameter). A rock made predomina ...

is increasingly popular after access to Meager Creek Hot Springs has been restricted post slide.

References

Mount Meager massif Holocene volcanism Cenozoic Canada Stratigraphy of British Columbia Volcanism of British Columbia Sea-to-Sky Corridor {{cariboo-geo-stub