| Title | Sedimentological and geochemical basin analysis of the Paleoproterozoic Penrhyn and Piling groups of Arctic Canada |
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| Author | Partin, C A; Bekker, A; Corrigan, D ; Modeland, S; Francis, D; Davis, D W |
| Source | Precambrian Research vol. 251, 2014 p. 80-101, https://doi.org/10.1016/j.precamres.2014.06.010 |
| Image |  |
| Year | 2014 |
| Alt Series | Earth Sciences Sector, Contribution Series 20150086 |
| Publisher | Elsevier BV |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | html; pdf |
| Province | Nunavut |
| NTS | 27B; 27C; 37A; 37D; 46I; 46J; 46O; 46P; 47A; 47B; 47C; 47D |
| Area | Melville Peninsula; Baffin Island |
| Lat/Long WENS | -88.0000 -80.0000 70.0000 66.0000 |
| Lat/Long WENS | -76.0000 -70.0000 70.0000 68.0000 |
| Subjects | stratigraphy; geochronology; geochemistry; tectonics; stratigraphic analyses; stratigraphic correlations; stratigraphic models; uranium lead dates; zircon dates; neodymium samarium dates; carbon
isotopes; carbon geochemistry; volcanic rocks; basalts; sills; tectonic setting; provenance; basin analyses; modelling; Rae craton; Churchill province; Piling Group; Bravo Lake Formation; Longstaff Bluff Formation; Penrhyn Group; Flint Lake
Formation; Proterozoic; Precambrian |
| Illustrations | geological sketch maps; geochemical analyses |
| Program | GEM: Geo-mapping for Energy and Minerals Multiple Metals - Melville Peninsula (Nunavut) |
| Released | 2014 09 01 |
| Abstract | Paleoproterozoic metasedimentary successions on the western Churchill Province record a history of regional tectonic events spanning the breakup and amalgamation of supercontinents. Metasedimentary
successions in the northeastern part of the Trans-Hudson orogeny, including the Penrhyn and Piling groups of Melville Peninsula and Baffin Island, respectively, have been understudied with respect to their basin evolution records. We present new
sedimentological, geochemical, and geochronological data for the Penrhyn and Piling groups that record deposition on the Rae craton. New detrital zircon U-Pb age data indicate that deposition of the Penrhyn Group started after ?1897 Ma and post-dates
deposition of most of the Piling Group. The new maximum age constraints and stratigraphy of the Penrhyn Group do not support previous lithostratigraphic correlation with the Piling Group. Deposition of the lower Piling Group likely occurred in an
epicontinental basin setting. The occurrence of detritus from the Meta Incognita microcontinent in the upper Piling Group (Bravo Lake and Longstaff Bluff formations) is interpreted to signal the onset of foreland basin deposition. The details of
sedimentation in the Piling foreland basin provide an additional constraint to discerning the polarity of subduction between the Rae craton and Meta Incognita microcontinent that closed the Piling basin. We conclude that the Piling foreland system
shows characteristics of a pro-foreland basin, implying that the Rae craton was the lower plate in the collision with the Meta Incognita microcontinent. Finally, with new stratigraphic and detrital zircon geochronological data for the Penrhyn and
Piling groups, we provide a comparison with other sedimentary successions on the Rae craton whose histories were influenced by similar regional tectonic events. |
| GEOSCAN ID | 296591 |
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