The Geology and ore deposits of the Howards Pass Area, Yukon and Northwest Territories : the origin of basinal sedimentary stratiform sulphides deposits ...
Economically important sedimentary-type stratiform Zn-Pb deposits exist in the Lower Silurian basinal facies of the Selwyn Basin along the Yukon-Northwest Territories border. Three major similar deposits have been defined to date, and are referred to collectively as the Howards Pass deposits. The Pr...
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| Format: | Text |
| Language: | English |
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University of British Columbia
2010
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| Online Access: | https://dx.doi.org/10.14288/1.0052838 https://doi.library.ubc.ca/10.14288/1.0052838 |
| Summary: | Economically important sedimentary-type stratiform Zn-Pb deposits exist in the Lower Silurian basinal facies of the Selwyn Basin along the Yukon-Northwest Territories border. Three major similar deposits have been defined to date, and are referred to collectively as the Howards Pass deposits. The Pre-Mesozoic history of the Howards Pass area was dominated by three major basin systems. During the Late Hadrynian to Early Cambrian the 'Grit Unit' was deposited as a clastic wedge with a western source area. Initially deep water turbidites were deposited but continued filling in of the basin led to shallow water deposition. During the Late Cambrian to Early Devonian the Rabbitkettle and Road River groups were deposited in the Selwyn Basin. The Selwyn Basin is defined by shallow water carbonates on the east and a general deep water environment to the west. The carbonates were succeeded by hemipelagic and pelagic organic-rich sediments with occasional terrigenous material deposited by geostrophic currents. Within ... |
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