Initial analysis of the Jurassic “Nordegg Member”, Fernie Formation: using paleomagnetism to date source rock thermal maturation

Paleomagnetic analysis demonstrates that the mean inclination, and therefore the age of the magnetization, in the organic-rich shales of the “Nordegg Member” of the Jurassic Fernie Formation correlates with thermal maturity indices. In the immature wells, the magnetization is probably Early to Middl...

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Veröffentlicht in:Physics and chemistry of the earth. Parts A/B/C 2002-01, Vol.27 (25), p.1161-1168
Hauptverfasser: Cioppa, M.T, Symons, D.T.A, Flore, M
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creator Cioppa, M.T
Symons, D.T.A
Flore, M
description Paleomagnetic analysis demonstrates that the mean inclination, and therefore the age of the magnetization, in the organic-rich shales of the “Nordegg Member” of the Jurassic Fernie Formation correlates with thermal maturity indices. In the immature wells, the magnetization is probably Early to Middle Jurassic ( I=60°±5°), in the mature wells, Late Jurassic ( I=70°±3°) and in the overmature wells, Late Cretaceous ( I=77°+7/−5°). The change in inclination with time, which reflects varying ages of magnetization, also allows the possibility that the inclination can be used as a proxy for the maturity level in the “Nordegg Member” and thereby aid in petroleum exploration.
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source Elsevier ScienceDirect Journals
subjects Marine
Organic maturation
Paleomagnetism
Remagnetization
Thermal maturation indices
title Initial analysis of the Jurassic “Nordegg Member”, Fernie Formation: using paleomagnetism to date source rock thermal maturation
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