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Spring 2016
This contribution presents the results of a new mapping and geochemical investigation of well-preserved rock units in the Acasta Gneiss Complex (AGC), Canada, and provides additional support for a broadly mafic Hadean Earth, in which the first evolved crust formation took place in a geodynamic...
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The application of detrital zircon grains from Pleistocene eskers for reconnaissance bedrock mapping in the Acasta Gneiss Complex
DownloadFall 2019
The Acasta Gneiss Complex (AGC) is a ~2400 km2 Hadean-Mesoarchean terrane that contains the oldest known zircon-bearing rocks on Earth. Despite its importance for early Earth geology, only a small fraction (~50 km2) has been mapped in detail. To determine the lateral extent of ancient rocks and...