Abstract
New U-Pb zircon ages are reported from western Stikinia. Devonian and Pennsylvanian ages of volcanic rocks at Oweegee dome confirm the presence of pre-Permian strata, and with Paleozoic and Triassic detrital zircons from Lower Jurassic sandstone, they help to demonstrate pre-Lower Jurassic deformation and uplift. The absence of pre-Paleozoic inherited zircon from all samples is consistent with Nd-Sr isotopic data which suggest that Stikinia consists mainly of juvenile crust. U-Pb ages for posttectonic intrusions suggest that structures in Skeena Fold Belt in the Kinskuch area formed prior to Eocene time. Five ages for felsic volcanic rocks suggest near-contemporaneity for cessation of volcanism in the areas studied. -from Authors
Original language | English (US) |
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Pages (from-to) | 1155-1171 |
Number of pages | 17 |
Journal | Canadian Journal of Earth Sciences |
Volume | 32 |
Issue number | 8 |
DOIs | |
State | Published - 1995 |
ASJC Scopus subject areas
- General Earth and Planetary Sciences