Paleomagnetism and tectonics of the Cretaceous Mt. Stuart Batholith of Washington: translation or tilt?

Details Paleomagnetism and tectonics of the Cretaceous Mt. Stuart Batholith of Washington: translation or tilt? Paleomagnetism and tectonics of the Cretaceous Mt. Stuart Batholith of Washington: translation or tilt?

Dec 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981e%26psl..56..336b&link_type=abstract

Earth and Planetary Science Letters, Volume 56, p. 336-342.

Other

37

Scientific paper

The Mt. Stuart Batholith is a composite pluton of Late Cretaceous age that intrudes the crystalline North Cascades terrane of northwestern Washington. Its paleomagnetic direction (D=10.0°, I=45.5° α95=4.9°) is markedly different from the direction expected for Cretaceous rocks from northwestern Washington (D=330.5°, I=73.0°), which means that the Mt. Stuart Batholith either has moved relative to the North American interior, or has been tilted through a substantial angle, or both, since it acquired its magnetism. Either tilt or translation are possible, geometrically, but translation is more likely, because: (1) local geology apparently does not support tilt in the required direction; (2) it probably is not possible for a panel of rock the size of the Mt. Stuart Batholith to tilt through the necessary angle (ca. 35°) after its deeper parts have cooled sufficiently to retain remanent magnetization; (3) the sense of paleomagnetic discordance found in the Mt. Stuart Batholith (clockwise-rotation of declination, flattened inclination) is identical to that found in nearly every other allochthonous terrane in the western North American Cordillera, including every other Cretaceous batholith studied except the Sierra Nevada.

Affiliated with

Also associated with

No associations

Rating

Paleomagnetism and tectonics of the Cretaceous Mt. Stuart Batholith of Washington: translation or tilt? 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 Paleomagnetism and tectonics of the Cretaceous Mt. Stuart Batholith of Washington: translation or tilt?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Paleomagnetism and tectonics of the Cretaceous Mt. Stuart Batholith of Washington: translation or tilt? will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1262673