Mathews, W. H. (1983) Early Tertiary resetting of potassium–argon dates in the Kootenay Arc, southeastern British Columbia. Canadian Journal of Earth Sciences, 20 (5) 867-872 doi:10.1139/e83-076
| Reference Type | Journal (article/letter/editorial) | ||
|---|---|---|---|
| Title | Early Tertiary resetting of potassium–argon dates in the Kootenay Arc, southeastern British Columbia | ||
| Journal | Canadian Journal of Earth Sciences | ||
| Authors | Mathews, W. H. | Author | |
| Year | 1983 (May 1) | Volume | 20 |
| Issue | 5 | ||
| Publisher | Canadian Science Publishing | ||
| DOI | doi:10.1139/e83-076Search in ResearchGate | ||
| Generate Citation Formats | |||
| Mindat Ref. ID | 477908 | Long-form Identifier | mindat:1:5:477908:1 |
| GUID | 0 | ||
| Full Reference | Mathews, W. H. (1983) Early Tertiary resetting of potassium–argon dates in the Kootenay Arc, southeastern British Columbia. Canadian Journal of Earth Sciences, 20 (5) 867-872 doi:10.1139/e83-076 | ||
| Plain Text | Mathews, W. H. (1983) Early Tertiary resetting of potassium–argon dates in the Kootenay Arc, southeastern British Columbia. Canadian Journal of Earth Sciences, 20 (5) 867-872 doi:10.1139/e83-076 | ||
| In | (1983, May) Canadian Journal of Earth Sciences Vol. 20 (5) Canadian Science Publishing | ||
| Abstract/Notes | K–Ar analyses of rocks in the central Kootenay Arc indicate a Paleocene (or slightly earlier) thermal event, locally reaching 350 °C, that has reset this isotope clock. The area of resetting is nearly coincident with a north–south belt, 20 km wide, of metamorphic rocks resulting from an earlier (mid-Jurassic?) thermal event with temperatures reaching an estimated 625 °C. The strata involved in both high-grade metamorphism and resetting seem not to have been uplifted more than older weakly metamorphosed strata to the east. The mid-Jurassic? and Paleocene thermal events appear to be distinct in time from one another, but may both be related to some common control in the deeper crust or upper mantle. | ||
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