Scott, David J. (1997) Geology, U – Pb, and Pb – Pb geochronology of the Lake Harbour area, southern Baffin Island: implications for the Paleoproterozoic tectonic evolution of northeastern Laurentia. Canadian Journal of Earth Sciences, 34 (2) 140-155 doi:10.1139/e17-012
| Reference Type | Journal (article/letter/editorial) | ||
|---|---|---|---|
| Title | Geology, U – Pb, and Pb – Pb geochronology of the Lake Harbour area, southern Baffin Island: implications for the Paleoproterozoic tectonic evolution of northeastern Laurentia | ||
| Journal | Canadian Journal of Earth Sciences | ||
| Authors | Scott, David J. | Author | |
| Year | 1997 (February 1) | Volume | 34 |
| Issue | 2 | ||
| Publisher | Canadian Science Publishing | ||
| DOI | doi:10.1139/e17-012Search in ResearchGate | ||
| Generate Citation Formats | |||
| Mindat Ref. ID | 482916 | Long-form Identifier | mindat:1:5:482916:8 |
| GUID | 0 | ||
| Full Reference | Scott, David J. (1997) Geology, U – Pb, and Pb – Pb geochronology of the Lake Harbour area, southern Baffin Island: implications for the Paleoproterozoic tectonic evolution of northeastern Laurentia. Canadian Journal of Earth Sciences, 34 (2) 140-155 doi:10.1139/e17-012 | ||
| Plain Text | Scott, David J. (1997) Geology, U – Pb, and Pb – Pb geochronology of the Lake Harbour area, southern Baffin Island: implications for the Paleoproterozoic tectonic evolution of northeastern Laurentia. Canadian Journal of Earth Sciences, 34 (2) 140-155 doi:10.1139/e17-012 | ||
| In | (1997, February) Canadian Journal of Earth Sciences Vol. 34 (2) Canadian Science Publishing | ||
| Abstract/Notes | Geological and geochronological results of an investigation of the Paleoproterozoic siliciclastic and carbonate supracrustal rocks of the Lake Harbour Group (LHG) and surrounding tonalitic gneisses on southern Baffin Island are presented. Conventional U – Pb geochronology of monazite from rocks of the LHG suggest that penetrative deformation of these rocks occurred prior to, or during, peak metamorphic conditions at ca. 1845 –1840 Ma. Conventional U – Pb zircon results indicate that much of the tonalitic gneiss ranges in age from [Formula: see text] to 1827[Formula: see text]. The tonalitic gneisses and Lake Harbour Group units were tectonically imbricated by ca. 1805 Ma, and are part of a southwest-verging thrust belt interpreted from regional considerations to represent the northern continuation of the Ungava Orogen. The present results indicate that current tectonic models for the evolution of northeastern Laurentia that involve a dominantly Archean southeastern Rae province require revision. It is proposed that much of the metaigneous material that lies between the Archean Superior and Nain cratons represents a composite subduction-related domain. | ||
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