* * *
Erosion always wins.
The vanished mountains we envisioned were simple possibilities, tentative interpretations of passages written subtly in the obtuse patterns and features of Greenland’s rocks.
The patterns match those seen in the Alps and the Himalayas — zones that seemed to be huge thrust faults, folds of immense proportion, metamorphism at extreme conditions. Through the inspired power of analogy, my colleagues Kai Sørensen, John Korstgård, their coworkers, and those who had come before them had surmised that the Greenland landscape was an old ancestor, a forerunner of the young mountain systems that today so dramatically exalt Earth’s skin. But the Greenland ancestors are long gone, erased by the incessant hunger of flowing water…
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