Abstract

A comparison of the major geological provinces, belts, and lineaments of Proterozoic Laurentia and Australia results in a reconstruction that fits the Mojave terrane of California-Nevada into a reentrant of the Tasman Line of eastern Australia. This reconstruction, to which K. Karlstrom and others gave the acronym AUSWUS (Australia–Western United States), was first proposed by M. Brookfield in 1993 on the basis of matching major lineaments. AUSWUS brings together the remarkably similar Precambrian geology of Mojavia (California-Nevada) and the Broken Hill block (Australia). AUSWUS also provides suitable intercontinental source terranes for zircons in Tasmania, the Belt basin, and Papua New Guinea.

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