GEOSCAN Search Results: Fastlink

GEOSCAN Menu


TitleGeological controls on the present temperature field of the western Sverdrup Basin, Canadian Arctic Archipelago
AuthorChen, Z; Grasby, S E; Dewing, K; Osadetz, K G; Brent, T
SourceBasin Research 30, S1, 2018 p. 479-496, https://doi.org/10.1111/bre.12232
Year2018
Alt SeriesEarth Sciences Sector, Contribution Series 20120284
PublisherJohn Wiley & Sons
Documentserial
Lang.English
Mediapaper; on-line; digital
File formatpdf
ProvinceNunavut
NTS89A; 89B; 89C; 89D; 89E; 89F; 79; 69; 59C; 59B; 88G; 88H; 78G; 78H
Lat/Long WENS-120.0000 -89.0000 80.0000 74.0000
Subjectssalt diapirs; diapirs; thermal analyses; thermal regimes; basins; thermal alteration; thermal history; anticlines; recharge rates
Illustrationscorrelation charts; plots; cross-sections; histograms; graphs
ProgramSverdrup Sedimentary Basin, GEM: Geo-mapping for Energy and Minerals
AbstractAnalysis of current temperature data from more than 100 wells in the Canadian Arctic Archipelago resulted in the recognition of two major thermal regimes. Elevated temperature regions are observed in association with salt diapirs and salt cored anticlines. Depressed temperature fields are observed along the western and southern basin margins and around Cornwall-Amund Ringnes islands, where regional Mesozoic aquifers are exposed to surface or connected to basin boundary faults or regional unconformities. Meteoric and Holocene sub-glacial water recharge are inferred to be responsible for the depressed geothermal regime and low formation water salinity. Neither exhumation associated with the Eocene ''Eurekan'' orogeny nor volcanic intrusion associated with opening of Canada Basin in late Jurassic-early Cretaceous had significant influence on the present day temperature field, although thermal indicators show evidence of elevated thermal alternations of organic matter pointing to earlier, but now dissipated, thermal anomalies.
GEOSCAN ID291987