| Title | Upper Cambrian and Lower Ordovician conodont biostratigraphy and revised lithostratigraphy, Boothia Peninsula, Nunavut |
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| Author | Zhang, S |
| Source | Canadian Journal of Earth Sciences vol. 57, no. 9, 2020 p. 1030-1047, https://doi.org/10.1139/cjes-2020-0006 |
| Image |  |
| Year | 2020 |
| Alt Series | Natural Resources Canada, Contribution Series 20190339 |
| Publisher | National Research Council of Canada |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf; html |
| Province | Nunavut |
| Area | Boothia Peninsula; Canada |
| Lat/Long WENS | -99.0000 -86.0000 74.6667 69.0000 |
| Subjects | Science and Technology; stratigraphy; Cambrian; Ordovician |
| Illustrations | location maps; diagrams; satellite images; photographs |
| Program | Canada-Nunavut Geoscience Office, Funding Program |
| Released | 2020 08 06 |
| Abstract | The strata exposed along Lord Lindsay River on southern Boothia Peninsula were previously named the Netsilik Formation, and then recognized as the Turner Cliffs Formation; the interpretation about their
ages and correlations were largely based on limited data. New detailed field investigation at 23 localities along the section resulted in the discovery of over 640 identifiable conodont specimens, with 33 species representing 16 genera, among which a
new species, Rossodus boothiaensis n. sp., is recognized. Five North American standard conodont zone/subzone-equivalent faunas are documented from the section, namely the Hirsutodontus hirsutus Subzone-equivalent, Cordylodus angulatus, Rossodus
manitouensis, Acodus deltatus/Oneotodus costatus and Oepikodus communis zones-equivalent faunas. These faunas enable a new understanding of the age and stratigraphic position of the Netsilik/Turner Cliffs Formation on southern Boothia Peninsula. The
Netsilik Formation can be correlated to the lower member (except for the lowest part) and upper member of the Turner Cliffs Formation; the previously unmeasured upper part of the section can be associated with the lower Ship Point Formation. Based on
the new conodont data, these three units are dated as early Age 10, Late Cambrian to middle Tremadocian, Early Ordovician; late Tremadocian, Early Ordovician; and early Floian, Early Ordovician, respectively. This study fills a gap in Upper Cambrian
and Lower Ordovician biostratigraphy on Boothia Peninsula, and links the regional biostratigraphy to that of the Laurentia. |
| Summary | (Plain Language Summary, not published)
New detailed field investigation at 23 localities along the Lord Lindsay River section, Boothia Peninsula, Nunavut, resulted in a discovery of 33
conodont species representing 16 genera among over 640 specimens. A new species, Rossodus boothiaensis, is recognized. Five North American standard conodont zone/subzone-equivalent faunas are identified from the section. These faunas enable a new
understanding of the age and stratigraphic position of the Lord Lindsay River section on Boothia Peninsula: 1) the section is formed by the lower and upper members of the Turner Cliffs Formation and the lower Ship Point Formation; 2) these three
units are dated as early Age 10 (Late Cambrian)-Smiddle Tremadocian (Early Ordovician), late Tremadocian (Early Ordovician), and early Floian (Early Ordovician), respectively. This study fills a gap in Upper Cambrian and Lower Ordovician
biostratigraphy on Boothia Peninsula, and links the regional biostratigraphy to that of the North American continent. |
| GEOSCAN ID | 321430 |
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