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TitleNew insights into the stratigraphy and petroleum potential of the Baffin Shelf's Cretaceous rocks
AuthorMacLean, B; Williams, BORCID logo; Zhang, S
SourceBulletin of Canadian Petroleum Geology vol. 62, no. 4, 2014 p. 289-310,
Alt SeriesEarth Sciences Sector, Contribution Series 20130153
Mediapaper; on-line; digital
File formatpdf
ProvinceEastern offshore region; Nunavut; Quebec
NTS14L; 14M; 16E; 16L; 16M; 16N; 24I; 24J; 24K; 24L; 24M; 24N; 25; 26; 27; 34I; 34J; 34K; 34L; 34M; 34N; 34O; 34P; 35; 36; 37; 38A; 38B; 38C; 45J; 45M; 45N; 45O/13; 45O/16; 45P; 46; 47; 48A; 48B; 48C; 48D; 56A; 56H; 56I; 56P; 57A/01; 57A/02; 57A/07; 57A/08; 57A/09; 57A/10; 57A/15; 57A/16; 57D/01; 57D/02; 57D/07; 57E/08; 57E/09; 57E/15; 57E/16; 57H/07; 57H/08; 57H/09; 57H/10; 57H/15; 57H/16; 58A/01; 58A/02; 58A/07; 58A/08; 58A/09; 58A/10; 58A/15; 58A/16; 58D/01; 58D/02; 58D/08; 58D/09
AreaBaffin Bay; Labrador Sea; Davis Strait; Baffin Island; Hudson Bay; Hudson Strait
Lat/Long WENS -82.0000 -48.0000 74.0000 58.0000
Lat/Long WENS -90.0000 -60.0000 74.0000 58.0000
Subjectsstratigraphy; fossil fuels; geochemistry; hydrocarbons; hydrocarbon potential; petroleum; petroleum occurrence; petroleum resources; biostratigraphy; Mesozoic; Cretaceous
Illustrationslocation maps; tables; stratigraphic columns; photographs; profiles; plots
ProgramGEM: Geo-mapping for Energy and Minerals Baffin Bay Sedimentary Basins - Canadian Arctic Petroleum Systems East (CAPSE)
Released2015 03 24
AbstractCretaceous rocks underlie most of the northeast Baffin shelf, are present in Cumberland Sound, and may underlie the southeast Baffin shelf. New palynological, Rock Eval, and vitrinite reflectance analyses of bedrock samples, obtained from the Baffin shelf and Hudson Strait during a shallow core-hole drilling programme undertaken in the 1970s and 1980s, provide a better understanding of the stratigraphy and petroleum potential of the region. The samples from the Buchan Gulf, Scott Inlet, and Home Bay areas on the northeast Baffin shelf, which were originally considered to be of primarily Campanian age, are now considered to be Coniacian to early Campanian. Non-marine Aptian-Albian rocks occur in the Padloping area, farther south along the northeast Baffin shelf, and in Cumberland Sound. Based on Rock Eval and vitrinite reflectance data, the Cretaceous rocks sampled on the Baffin shelf contain gas-prone Type III kerogen and are immature to marginally mature. However, the presence of an oil seep off Scott Inlet indicates that more mature source rocks capable of generating oil exist in the region. Additional shallow cores would further define the biostratigraphic and geochemical aspects of strata on the Baffin shelf.
Summary(Plain Language Summary, not published)
This paper presents new biostratigraphic data relating to the age (Coniacian ans Santonian) and depositional environments resulting from re-analysis of GSCA shallow drill cores of Upper Cretaceous organic-rich mudstones and black shales obtained from the Baffin Shelf in the 1970s and 1980s, together with results of geochemical analyses of those cores. The latter show the strata sampled are mostly thermally immature, but greater maturity is possible where strata are more deeply buried in the stratigraphic succession, an interpretation supported by the occurrence of a submarine oil seep offshore from Scott Inlet where analysis of the oil suggests that it originates from an Upper Cretaceous marine source.

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