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1 Land Resource Science, Guelph University, Guelph, Ontario N1G 2W1, Canada
The proposed Vendian juxtaposition of western North America and eastern Australia can be tested by comparing sequences on each margin that developed during the major glacial epochs of the Neoproterozoic. The actual fitting of the margins, however, is more difficult, because both margins have been deformed since separation. A fit requires lines or points that can be correlated across the margins. Three major Neoproterozoic transform-fault offsets can be traced from eastern Australia into western North America to give a fairly precise alignment of the respective margins that is compatible with the stratigraphy.
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