FROM LOCAL PATRIOTISM TO A PLANETARY PERSPECTIVE: IMPACT CRATER RESEARCH IN GERMANY, 1930s–1970s. Martina Kölbl-Ebert. 2016. Ashgate. (hardback). 2020. Routledge. (paperback).
The evolving interpretations of the Nördlinger Ries and the Steinheim Basin,2 leading to their currently accepted interpretation as impact structures,3 extended over much of the twentieth century. Ries and Steinheim are early mid-Miocene in age (about 15 million years old), and most investigators have considered them to be coeval and genetically related, although that has not always been the case.4 These structures are in a class of geologically ancient, thus significantly eroded, circular features that were...
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