Rock magnetic evidence for inclination shallowing in the early Carboniferous Deer Lake Group red beds of western Newfoundland

Details Rock magnetic evidence for inclination shallowing in the early Carboniferous Deer Lake Group red beds of western Newfoundland Rock magnetic evidence for inclination shallowing in the early Carboniferous Deer Lake Group red beds of western Newfoundland

Apr 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010geoji.181..275b&link_type=abstract

Geophysical Journal International, Volume 181, Issue 1, pp. 275-289.

Mathematics

Logic

5

Magnetic Fabrics And Anisotropy, Magnetic Mineralogy And Petrology, Palaeomagnetism Applied To Tectonics, Palaeomagnetism Applied To Geologic Processes, Rock And Mineral Magnetism

Scientific paper

A paleomagnetic and rock magnetic study of the Carboniferous Deer Lake Group red beds of Newfoundland was performed to detect and correct for inclination shallowing. Results indicate a primary remanence carried by magnetite, with a mean direction of D = 179.7°, I = 33.7°, α95 = 7.2° which corresponds to a paleopole position of 22.2°N, 122.3°E, A95 = 7.6°. Correcting the inclination using anisotropy of anhysteretic remanence and the measured individual particle anisotropy gives a corrected direction of D = 178.8°, I = 50.9°, α95 = 6.3° corresponding to a paleopole position at 8.4°N, 122.7°E, A95 = 7.2°. This correction is larger than that of other red beds from the Maritime Provinces of Canada, but is consistent with paleoenvironmental reconstructions, placing North America in a more arid climate zone. Our inclination-corrected results have important implications for this portion of North America's apparent polar wander path and suggest a correction is needed for other red bed-derived APWPs. We have determined the range of flattening factors f, defined as the proportionality constant between the tangents of the measured (Im) and field (Io) inclinations, tan(Im) = ftan(I0), from this study and previous inclination correction studies to estimate inclination corrections. Using the range of haematite f factors observed in this study to correct the Neogene red bed inclinations from the Vallès-Penedès Basin (NE Spain) yields inclinations consistent with the known geomagnetic field inclination in the Neogene, thus indicating that the range of f factors reported here may be used to estimate the magnitude of inclination shallowing in red beds.

Affiliated with

Also associated with

No associations

Rating

Rock magnetic evidence for inclination shallowing in the early Carboniferous Deer Lake Group red beds of western Newfoundland does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Rock magnetic evidence for inclination shallowing in the early Carboniferous Deer Lake Group red beds of western Newfoundland, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rock magnetic evidence for inclination shallowing in the early Carboniferous Deer Lake Group red beds of western Newfoundland will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1315217