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| Equal Area Projection for TSDC
22.1, up to 500 TT |
Ortho projection for TSDC
22.1, up to 500 TT |
| In the original sampling done by Elston and Bressler (1978),
it appeared that there was a mixed polarity zone near the base of the
Tapeats. However, our preliminary results indicate that the reversed
polarities that Elston and Bressler observed may have been a weak reversed
overprint that comes off rather nicely at higher temperature steps.
Above are projections from a representative sample that
was originally thought to be reversed polarity. A similar pattern of
demag is seen in all of the samples that originally displayed reversed
polarities. |
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| Here is an excellent example of
present field being progressively removed from a Cambrian normal
polarity. The graphs are of TSDC 46, up to 575 TT. |