The Cassiar Terrane is a long

Cretaceous The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of ...

terrane In geology, a terrane (; in full, a tectonostratigraphic terrane) is a crust fragment formed on a tectonic plate (or broken off from it) and accreted or " sutured" to crust lying on another plate. The crustal block or fragment preserves its ow ...

located in the Northern Interior of

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

and southern

Yukon Yukon (; ; formerly called Yukon Territory and also referred to as the Yukon) is the smallest and westernmost of Canada's three territories. It also is the second-least populated province or territory in Canada, with a population of 43,964 as ...

. It consists of miogeoclinal

strata In geology and related fields, a stratum ( : strata) is a layer of rock or sediment characterized by certain lithologic properties or attributes that distinguish it from adjacent layers from which it is separated by visible surfaces known as e ...

and contains the

Cassiar Batholith Cassiar may refer to: *Cassiar, British Columbia, a ghost town in northern British Columbia * Stewart-Cassiar Highway, the northwesternmost highway in British Columbia *Cassiar Mountains, in northern British Columbia and southern Yukon *Cassiar L ...

, a 100-million-year-old igneous intrusion and the single largest intrusive body in the hinterland of the Canadian portion of the Western Cordillera.Petrogenesis of the Cretaceous Cassiar batholith, Yukon–British Columbia, Canada: Implications for magmatism in the North American Cordilleran Interior
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References

Terranes Cretaceous System of North America Cretaceous British Columbia Cretaceous Yukon Stratigraphy of British Columbia Stratigraphy of Yukon {{Canada-geology-stub