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Geology Of The Cooper Mountain Pluton, North Cascade Mountains, Washington Based On Magnetic Fabrics, Magnetic Remanence And Petrography, Tammy C. Fawcett
Geology Of The Cooper Mountain Pluton, North Cascade Mountains, Washington Based On Magnetic Fabrics, Magnetic Remanence And Petrography, Tammy C. Fawcett
WWU Graduate School Collection
A study of the 48 Ma Cooper Mountain pluton (CMP) in the North Cascade Mountains of Washington using anisotropy of magnetic susceptibility (AMS) defined the orientation of magnetic fabrics. Fabrics in limited areas at the margins of the CMP tend to be parallel to the pluton margin and are therefore interpreted to be emplacement-related. The fabrics in the interior of the body, throughout the bulk of the pluton, are discordant with respect to the NW pluton margin. The fabric is manifest by NW-striking, moderately to steeply dipping foliation and NW-SE trending, moderately to shallowly plunging lineation, approximately parallel to regional …