| Abstract: | The results of > 20 yr of geochronological studies in the Yukon crystalline terrain of east-central Alaska and W Yukon Territory suggest at least six igneous and thermal (metamorphic?) events. Plutonism during Mississippian, early Jurassic, mid-Cretaceous, late Cretaceous and early Tertiary times is indicated. Evidence also indicates that Mississippian, early Jurassic, late early-Cretaceous, and late Cretaceous thermal (metamorphic?) events have affected parts of the terrain. The western part was affected by a significant regional metamorphic event in late early-Cretaceous time, followed by a terrain-wide mid-Cretaceous plutonic event. The pattern of K/Ar ages allows division of the terrain into domains, bounded by NE-trending lineaments. The K/Ar ages (204) are tabulated, with K/Ar ages of 10 mineral pairs.-P.Br. |
| Genre: | Article |
| ProdID: | 70013085 |
| Citation Author: | Wilson, F. H.; Smith, J. G.; Shew, N. |
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| Citation End Page: | 537 |
| Citation Issue: | 4 |
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| Citation Language: | English |
| Citation Larger Work Title: | Canadian Journal of Earth Sciences |
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| Citation Number Of Pages: | 13 |
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| Citation Search Results Text: | Review of radiometric data from the Yukon crystalline terrane, Alaska and Yukon Territory.; 1985; Article; Journal; Canadian Journal of Earth Sciences; Wilson, F. H.; Smith, J. G.; Shew, N. |
| Citation Start Page: | 525 |
| Citation Volume: | 22 |
| Citation Year: | 1985 |
| Type: | citation/reference |
| Text: | Review of radiometric data from the Yukon crystalline terrane, Alaska and Yukon Territory.; 1985; Article; Journal; Canadian Journal of Earth Sciences; Wilson, F. H.; Smith, J. G.; Shew, N. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Tue, 1 Jan 1985 00:00 -0600 |
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