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Record #175881:

Regional heat flow pattern and lithospheric geotherms in northeastern British Columbia and adjacent Northwest Territories, Canada / Jacek A. Majorowicz, Alan M. Jessop, Larry S. Lane.

Title: Regional heat flow pattern and lithospheric geotherms in northeastern British Columbia and adjacent Northwest Territories, Canada / Jacek A. Majorowicz, Alan M. Jessop, Larry S. Lane.
Author(s): Majorowicz, Jacek A.
Jessop, Alan M.
Lane, Larry S.
Date: 2005.
In: Bulletin of Canadian Petroleum Geology. (2005.), Vol. 53(1) (2005)
Abstract: New heat flow map for northeastern British Columbia, using log-heading temperature records corrected for drilling disturbance, at 200 m to over 4000 m depths, shows geothermal gradient varies from 20 to 90 mK/m (°C/km). Significant regional trend of southward and south-westward decrease of geothermal gradient is observed. Effective thermal conductivity shows variation in range 1.2 to 2.4 W/mK. Very large variations of terrestrial heat flow, from 40 to 130 mW/m², suggest large imprint of highly variable heat generation in upper crust. Lowest heat flow is observed in south and south-west of area. Highest heat flow is in north, with values above 100 mW/m². Lower heat flow values (<60 mW/²) are also observed in north. In deep western part of basin, low heat flow in south contrasts with high heat flow north of 59°N. Reduced (deep) heat flow in north is probably 10 to 20 mW/m2 higher than average of 33 mW/m2 proposed previously. Higher regional reduced heat flow and higher than average heat generation (2-4 μW/m³) of basement rocks probably accounts for part of northern high heat flow. It is estimated that average temperature at 5 km depth is 180°C; temperatures to 140°C are recorded at shallower depth of 2 km in northern and north-eastern part of study area..
Notes:

Bulletin of Canadian Petroleum Geology. Vol. 53(1) :51-66 (2005).

French abstract.

Keywords: 550.36 -- Terrestrial energetics and thermodynamics.
551.1/.4 -- Geology.
536 -- Heat.
B -- Geology and soil sciences.
(*3) -- Arctic regions.
(*41) -- Canada.
(*429) -- British Columbia.
(*440) -- Northwest Territories.
SPRI record no.: 175881

MARCXML

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035 ## ‡aSPRI-175881
040 ## ‡aUkCU-P‡beng‡eaacr
100 1# ‡aMajorowicz, Jacek A.
245 10 ‡aRegional heat flow pattern and lithospheric geotherms in northeastern British Columbia and adjacent Northwest Territories, Canada /‡cJacek A. Majorowicz, Alan M. Jessop, Larry S. Lane.
260 ## ‡a[S.l.] :‡b[s.n.],‡c2005.
300 ## ‡ap. 51-66 :‡bill. (some col.), maps.
500 ## ‡aBulletin of Canadian Petroleum Geology. Vol. 53(1) :51-66 (2005).
500 ## ‡aFrench abstract.
520 3# ‡aNew heat flow map for northeastern British Columbia, using log-heading temperature records corrected for drilling disturbance, at 200 m to over 4000 m depths, shows geothermal gradient varies from 20 to 90 mK/m (°C/km). Significant regional trend of southward and south-westward decrease of geothermal gradient is observed. Effective thermal conductivity shows variation in range 1.2 to 2.4 W/mK. Very large variations of terrestrial heat flow, from 40 to 130 mW/m², suggest large imprint of highly variable heat generation in upper crust. Lowest heat flow is observed in south and south-west of area. Highest heat flow is in north, with values above 100 mW/m². Lower heat flow values (<60 mW/²) are also observed in north. In deep western part of basin, low heat flow in south contrasts with high heat flow north of 59°N. Reduced (deep) heat flow in north is probably 10 to 20 mW/m2 higher than average of 33 mW/m2 proposed previously. Higher regional reduced heat flow and higher than average heat generation (2-4 μW/m³) of basement rocks probably accounts for part of northern high heat flow. It is estimated that average temperature at 5 km depth is 180°C; temperatures to 140°C are recorded at shallower depth of 2 km in northern and north-eastern part of study area..
650 07 ‡a550.36 -- Terrestrial energetics and thermodynamics.‡2udc
650 07 ‡a551.1/.4 -- Geology.‡2udc
650 07 ‡a536 -- Heat.‡2udc
650 07 ‡aB -- Geology and soil sciences.‡2local
651 #7 ‡a(*3) -- Arctic regions.‡2udc
651 #7 ‡a(*41) -- Canada.‡2udc
651 #7 ‡a(*429) -- British Columbia.‡2udc
651 #7 ‡a(*440) -- Northwest Territories.‡2udc
700 1# ‡aJessop, Alan M.
700 1# ‡aLane, Larry S.
773 0# ‡7nnas ‡tBulletin of Canadian Petroleum Geology. ‡gVol. 53(1) (2005) ‡wSPRI-38246
916 ## ‡a2006/06/20 -- HL
917 ## ‡aUnenhanced record from Muscat, imported 2019
948 3# ‡a20240329 ‡bHL