| Title | Offshore bedrock geology of Eclipse Sound and Pond Inlet: connecting the structure and stratigraphy of Bylot and northern Baffin islands |
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| Author | Currie, L D ;
Brent, T A; Turner, E C |
| Source | Canadian Journal of Earth Sciences vol. 57, no. 10, 2020 p. 1254-1267, https://doi.org/10.1139/cjes-2019-0159  Open Access |
| Image |  |
| Year | 2020 |
| Alt Series | Natural Resources Canada, Contribution Series 20210388 |
| Publisher | Canadian Science Publishing |
| Document | serial |
| Lang. | English |
| Media | paper; digital; on-line |
| Related | NRCan photo(s) in this
publication |
| File format | pdf; html |
| Province | Nunavut; Northern offshore region |
| NTS | 38A/05; 38A/12; 38B/05; 38B/06; 38B/07; 38B/08; 38B/09; 38B/10; 38B/11; 38B/12; 38B/13; 38B/14; 38B/15; 38B/16; 38C; 48A/07; 48A/08; 48A/09; 48A/10; 48A/15; 48A/16; 48D/01; 48D/02; 48D/07; 48D/08; 48D/09;
48D/10 |
| Area | Eclipse Sound; Pond Inlet; Baffin Island; Bylot Island; Baffin Bay; Navy Board Inlet |
| Lat/Long WENS | -82.0000 -75.0000 74.0000 72.2500 |
| Subjects | marine geology; regional geology; structural geology; stratigraphy; geophysics; surficial geology/geomorphology; Science and Technology; Nature and Environment; geological history; faulting;
displacement; plate motions; bedrock geology; basement geology; structural features; faults; faults; grabens; horsts; folds; geophysical interpretations; seismic interpretations; magnetic interpretations; aeromagnetic interpretation; magnetic
anomalies; geophysical surveys; acoustic surveys, marine; side-scan sonar; bathymetry; structural interpretations; stratigraphic analyses; stratigraphic correlations; physiography; Archean; Borden Basin; Bylot Supergroup; Eclipse Trough; Cape Hay
Fault Zone; Mesoproterozoic; Paleoproterozoic; Rae Province; Aktineq Fault Zone; Hartz Mountain Fault Zone; North Bylot Trough; Sermilik Fault; White Bay Fault Zone; Central Bylot High; Phanerozoic; Cenozoic; Quaternary; Tertiary; Mesozoic;
Cretaceous; Paleozoic; Precambrian; Proterozoic |
| Illustrations | location maps; geoscientific sketch maps; correlation charts; photographs; cross-sections; seismic profiles; tables; aerial photographs |
| Program | GEM2: Geo-mapping for Energy and Minerals Cretaceous Stratigrphy |
| Released | 2020 02 25 |
| Abstract | Understanding the Mesoproterozoic and younger structural history of the Eclipse Sound/Pond Inlet area is essential for the interpretation of its Archean to Paleoproterozoic geological history and could
have important implications for mineral and petroleum exploration models in the northern Baffin Bay area. The identification of potentially active faults is critical for understanding possible earthquake-related hazards in the area. The integrated
interpretation of 1970s-vintage marine seismic data with hill-shaded bathymetry, aeromagnetic data, and onshore geology maps has facilitated the identification of probable Mesoproterozoic (Bylot Supergroup) to Holocene strata on and below the sea
floor and a suite of episodically reactivated northwest-striking horst- and graben-bounding normal faults and fault zones. Fault displacement likely occurred during the development of the Mesoproterozoic Borden basin and the Cretaceous-Paleogene
opening of Baffin Bay, and in some cases may continue today. Some faults become more west-trending toward the south, which requires parts of these faults to have intermittently accommodated transtensional and (or) transpressional motion, possibly
explaining local folds and out-of-graben thrusting. Numerous previously unrecognised faults have been documented, with faults beneath Eclipse Sound (Eclipse Trough) spaced at 5 to 7 km intervals, and at least one fault zone (Cape Hay Fault Zone) that
appears to be at least 250 km in length, suggesting faults of similar spacing and scale may be present under Baffin Bay. This study uses a multi-thematic office-based methodology that inexpensively, and with little environmental impact, facilitates
the mapping of structures that intersect the sea floor in areas where glaciers have exposed bedrock. |
| Summary | (Plain Language Summary, not published)
Understanding the structural history of the Eclipse Sound/Pond Inlet area could have important implications for mineral and petroleum exploration models
in the northern Baffin Bay area. The identification of potentially active faults is critical for understanding possible earthquake-related hazards in the area. The integrated interpretation of 1970s vintage marine seismic data with bathymetry,
aeromagnetic, and onshore geology maps has facilitated the identification of previously unrecognised faults, with faults beneath Eclipse Sound spaced at 5 to 7 km. At least one fault zone is 250 km long, suggesting faults of similar density and scale
may be present under Baffin Bay. This study illustrates a multi-thematic office-based methodology that inexpensively, and with little environmental impact, facilitates the mapping of structures that intersect the seafloor in areas where glaciers have
exposed bedrock. |
| GEOSCAN ID | 329234 |
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