| A Reversal Before the 1870s? |
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The graph above is a prediction of what a histogram of critical point dates would be like if there were earlier reversals and we had a way to measure the position of the shoreline in these times. Such records exist in a more general form in the reading the landscape with a geologists eye. Scott Harris, a student who compleated his graduate studies with support from the National Science Foundation, looked at the old landforms on Hog Island and concluded that in earlier times the island had gone through periods of erosion followed by accretion and visa versa.