|Titre||Oil shale and reservoir rocks of the Hudson Bay Lowland, northeastern Manitoba (part of NTS 54)|
|Auteur||Nicolas, M P B; Lavoie, D|
|Source||Manitoba Department of Energy and Mines, Geological Services, Report of Activities 2012, 2012 p. 124-133 (Accès ouvert)|
|Séries alt.||Secteur des sciences de la Terre, Contribution externe 20120213|
|Document||publication en série|
|SNRC||54B; 54C; 54D; 54E; 54F; 54G; 54K; 54L|
|Lat/Long OENS||-96.0000 -90.0000 59.0000 56.0000|
|Sujets||hydrocarbures; capacité de production d'hydrocarbures; reservoirs; schistes bitumineux; biostratigraphie; maturation thermique; combustibles fossiles; géochimie; Paléozoïque; Silurien; Ordovicien;
|Illustrations||location maps; photographs; plots; tables; stratigraphic columns|
|Programme||Bassins sédimentaires d'Hudson / Foxe Bay, GEM : La géocartographie de l'énergie et des minéraux|
|Résumé||(Sommaire disponible en anglais seulement)|
The Hudson Bay and Foxe Basins Project is in its fourth and final year. It is part of the Geological Survey of Canada Geo-mapping for Energy and
Minerals (GEM) program. In Manitoba, the Hudson Bay Basin is represented by the Paleozoic carbonate succession of the Hudson Bay Lowland in the northeastern corner of the province.
Core samples for biostratigraphical analysis were collected, and
conodont and chitinozoan analyses were used to assist in formational assignments. RockEval™ 6 analyses were conducted on 37 samples from Silurian and Ordovician formations to identify potential source rocks in the succession preserved in the Hudson
Bay Lowland of Manitoba.
Overall, the RockEval™ 6 analyses resulted in the recognition of a fair number of samples having moderate to good source rock potential, but most of them are considered thermally immature. One sample from the Red Head
Rapids Formation yielded a total organic carbon content of 8.44 wt. %, thus it is considered a true oil shale, and confirms the extension of previously found oil shale units in Nunavut and northern Ontario. Two samples of the Red Head Rapids
Formation from the Sogepet Aquitaine Kaskattama Prov. No. 1 well are considered thermally mature with excellent oil generation potential. Previously, the presence of hydrothermal dolomite in core in the Hudson Bay Lowland was confirmed
petrographically and with stable isotopes geochemistry. Two more occurrences of potential hydrothermal dolomite in core indicate that this type of feature may be common in the Hudson Bay Lowland. A magnetotelluric survey
near the confirmed
hydrothermal dolomite occurrence indicated potential porous zones in the subsurface, which is common in hydrothermal dolomite. This project has demonstrated that the Hudson Bay Basin has all the right elements and conditions for
systems to exist, including mature and diverse source rocks, attractive reservoirs and efficient traps and seals.