| Title | Late Cretaceous uplift of northern Axel Heiberg Island, Nunavut, revealed by apatite fission track data, and a schematic model related to Baffin Bay extension |
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| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Hadlari, T ;
Issler, D R |
| Source | Geological Survey of Canada, Open File 8494, 2019, 98 pages, https://doi.org/10.4095/313399  Open Access |
| Image |  |
| Year | 2019 |
| Publisher | Natural Resources Canada |
| Document | open file |
| Lang. | English |
| Media | on-line; digital |
| File format | pdf |
| Province | Nunavut |
| NTS | 560D/03; 560D/06 |
| Area | Canadian Arctic Archipelago; Axel Heiberg Island; Rens Fiord; Greenstone Lake |
| Lat/Long WENS | -94.0000 -92.0000 81.5000 81.0000 |
| Subjects | tectonics; geochronology; structural geology; geophysics; Upper Cretaceous; Campanian; Paleogene; crustal studies; crustal uplift; crustal models; fission-track dates; tectonic history; thermal history;
plate tectonics; plate motions; rifting; magmatism; tectonic setting; bedrock geology; basement geology; structural features; faults; mid-ocean ridges; geophysical interpretations; paleogeography; correlations; Franklinian Basin; Sverdrup Basin;
Aurland Formation; Jaeger Lake Assemblage; Rens Fiord Sandstone; Stallworthy Formation; Svartavaeg Formation; Hazen Formation; Aurland Fiord Formation; Kanguk Formation; Eureka Sound Group; Expedition Formation; Strand Bay Formation; Iceberg Bay
Formation; Amerasia Basin; Lomonosov Ridge; Eurasia Basin; North American Plate; Eurasian Plate; Wegener Transform; Spitsbergen Transform; Phanerozoic; Cenozoic; Tertiary; Mesozoic; Cretaceous; Paleozoic; Cambrian |
| Illustrations | geoscientific sketch maps; stratigraphic charts; plots; time series; correlation sections; location maps; models; geochronological charts; rose diagrams; tables; histograms; frequency distribution
diagrams |
| Program | GEM2: Geo-mapping for Energy and Minerals Western Arctic, Pearya Terrane, North Ellesmere |
| Released | 2019 02 06 |
| Abstract | A sample of Cambrian sandstone from northern Axel Heiberg Island near Rens Fiord has yielded apatite fission track data indicating Late Cretaceous cooling. The preferred thermal model shows fairly rapid
cooling (~2 °C/m.y.) from the Cenomanian to early Paleocene followed by modest Paleogene burial-related heating (~50±10 °C) and subsequent late Cenozoic exhumation and cooling (~1 °C/m.y.). An alternate model shows continuous Late Cretaceous-Cenozoic
cooling at an average rate of ~1.1 °C/m.y. The Late Cretaceous exhumation event is interpreted as reactivation and uplift of a rift shoulder, which a new schematic model relates to modest southward motion of the northern Canadian Arctic Islands
relative to Greenland and Eurasia during rifting of Baffin Bay. |
| Summary | (Plain Language Summary, not published)
Apatite fission track analysis provides information on when rocks have cooled during erosion. We propose the Canadian portion of North America drifted
south relative to Greenland and Eurasia causing uplift of the margins of the Canadian Arctic Islands in the Late Cretaceous (ca. 77 million years ago). |
| GEOSCAN ID | 313399 |
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