| Title | High-resolution correlation between contrasting early Tonian carbonate successions in NW Canada highlights pronounced global carbon isotope variations |
| |
| Author | Greenman, J W; Rainbird, R H ; Turner, E C |
| Source | Precambrian Research vol. 346, 105816, 2020 p. 1-17, https://doi.org/10.1016/j.precamres.2020.105816 |
| Image |  |
| Year | 2020 |
| Alt Series | Natural Resources Canada, Contribution Series 20200113 |
| Publisher | Elsevier |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf |
| Province | Northwest Territories; Yukon |
| NTS | 95; 97A/02; 97A/03; 97A/06; 97A/07; 97A/10; 97A/11; 97A/14; 97A/15; 97D/02; 97D/03; 105; 106; 116 |
| Area | Uyarsivik Lake; Hornaday river; Mackenzie Mountains |
| Lat/Long WENS | -123.0000 -121.0000 69.2500 68.0000 |
| Lat/Long WENS | -140.0000 -122.0000 67.0000 60.0000 |
| Subjects | geochemistry; stratigraphy; sedimentology; Nature and Environment; Science and Technology; bedrock geology; lithology; sedimentary rocks; carbonates; depositional environment; depositional history;
correlations; basin analyses; isotopic studies; carbon isotopes; oxygen isotopes; Neoproterozoic; Shaler Supergroup; Mackenzie Mountains Supergroup; Rodinia; Brock Inlier; Aok Formation; Boot Inlet Formation; McClure Formation; Stone Knife Formation;
Precambrian; Proterozoic |
| Illustrations | location maps; tables; photographs; stratigraphic sections |
| Program | GEM2:
Geo-mapping for Energy and Minerals |
| Released | 2020 06 06 |
| Abstract | Carbonate successions older than the 800 Ma Bitter Springs isotope anomaly are sparse and this time is consequently poorly understood. The Shaler and Mackenzie Mountains supergroups of northwestern
Canada, however, contain thick ca. 1050-750 Ma carbonate successions recording both deep- and shallow-water depositional environments that are interpreted to have been deposited in two separate, extensive epicratonic basins on the Rodinia
supercontinent. When the contrasting sedimentology (benthic- versus pelagic-dominated carbonate production) and basin dynamics of two correlative carbonate successions from these basins are accounted for, a precise regional correlation can be made
using sequence stratigraphic and carbon isotope data. This paper presents a regionally correlatable carbon isotope profile, containing substantial excursions between -2 and 7 per mille vpdb, that can be used to extend the global curve into early
Neoproterozoic time prior to the Bitter Springs anomaly. |
| GEOSCAN ID | 326421 |
|
|