There is a new paper in the Journal of Great Lakes Research that people interested in impact structures and craters might miss because it outside the usual reading list of journals.
It is: J. Klokočník, J. Kostelecký and A. Bezděk, The putative Saginaw impact structure, Michigan, Lake Huron, in the light of gravity aspects derived from recent EIGEN 6C4 gravity field model. Journal of Great Lakes Research, https://doi.org/10.1016/j.jglr.2018.11.013 https://www.sciencedirect.com/science/article/pii/S0380133018302260 I do not know enough about exotic ways of processing gravity data that are needed to understand "combed strike angles" represent, to offer any opinion about they are and represent. Any comments from experts in interpreting gravity data are welcomed. Yours, Paul H.
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