Figure F21. Representative Zijderveld plots of stepwise AF (left) and thermal (right) demagnetization results from adjacent discrete samples within Sections (A) 330-U1372A-13R-4 and (B) 330-U1372A-22R-2. Solid and open circles indicate projections of vector endpoints onto the horizontal and vertical planes, respectively. Red arrows indicate direction derived from principal component analysis. NRM = natural remanent magnetization.
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