The mountain ranges surrounding the valley are mainly volcanic rocks of Jurassic & late Cretaceous age while the valley floor is mainly early Cretaceous & Eocene sedimentary rocks. The mountain ranges surrounding the valley are mainly volcanic rocks of Jurassic & late Cretaceous age while the valley floor is mainly early Cretaceous & Eocene sedimentary rocks. The Bulkley Valley is a graben that started to formed around 50 m.y. ago during a time of crustal extension. Many of the current features of the valley are a result of the last glacial period of the current ice age.
Asitka Group limestone cut by feldspar porphyry dikes (Stop 3)
Well-bedded chert that is tightly folded and cut by post kinematic feldspar porphyry dikes (Stop 4A)
Well-bedded chert that is tightly folded and cut by post kinematic feldspar porphyry dikes (Stop 4B)
Lapilli tuff that is typical of the lower Telkwa Formation of the Hazelton Group (Stop 10A)
This guide is based off of work by geologist Don MacIntyre and the Smithers Exploration Group, and covers the geology of the Smithers-Babine Lake-Hazelton area of west central British Columbia. This geotour examines the older component of Stikine Terrane in the region including the Upper Permian limestone to Upper Triassic island arc volcanic assemblages near Granisle on Babine Lake. In the Smithers and Hazelton areas the focus is on Jurassic, Cretaceous and Eocene overlap assemblages and post accretion structures related to crustal thickening and thinning events.
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Use the links below to access more information for class exercises, data and other useful information.
Images of rock chips from locations mentioned on interactive map, with magnifying function
Road trip guide authored by Don MacIntyre PGeo. PEng.
Presentation about Bulkley Valley geology by Don MacIntyre PGeo. PEng.
Page dedicated to the original roadtrip designed by geologist Don MacIntyre
A look at prehistory of First Nations peoples and the uses of natural products in everyday life.
The process and impacts of colonialism on First Nations peoples
Slides providing a simple explanation of the United Nations Directive on the Rights of Indigenous Peoples
Taking a look at the evolution of mining in BC and the role of Indigenous Peoples as it changed over time.
Regulations pertaining to the collection of materials within British Columbia