Archean Mafic-Ultramafic Magmatic Events Resource Package

This Resource Package contains two major products: GA Record 2009/41 and two full-colour, A0-sized map sheets (containing maps at 1:5 million, 1:6 million, and 1:3 million scales) that show the continental extent and age relationships of Archean mafic and ultramafic rocks and associated mineral deposits throughout Australia. These rocks have been assigned to twenty-six Archean Magmatic Events (AME) ranging in age from the Eoarchean ~3730 Ma (AME 1) to the late Neoarchean ~2520 Ma (AME 26).

The temporal and spatial relationships of these Magmatic Events in the Pilbara Craton, Hamersley Basin, Sylvania Inlier, Yilgarn Craton, and Gawler Craton are represented on a Time-Space-Event Chart on Sheet 1. An enlarged inset map on this sheet provides in more detail the polygon and line data of the events in the Pilbara Craton, Hamersley Basin, and Sylvania Inlier.

Sheet 2 shows the interpreted distribution and characterisation of Archean mafic-ultramafic magmatic rocks in the Yilgarn Craton. In particular, potential new areas of komatiitic rocks under cover that elsewhere in the craton host significant resources of nickel, copper, and platinum-group elements, are highlighted. Other maps on Sheet 2 summarise the nickel resource endowment and crustal neodymium model ages of various geological provinces in the Yilgarn Craton.

These map sheets, when used in association with another recently produced map 'Australian Proterozoic Mafic-Ultramafic Magmatic Events (GeoCat 66114; published in 2008)', summarise the temporal and spatial evolution of Precambrian mafic-ultramafic magmatism in Australia.

Record 2009/41 (Geocat 69935) is a user guide for the `Australian Archean Mafic-Ultramafic Magmatic Events' map (Geocat 69347). It compiles all the geological and geochronological data that underpins the information portrayed on the map.

The Resource Package also contains in addition to the maps and record, a spreadsheet of data that support the maps and a time-series animation summarising all the Archean Mafic-Ultramafic Magmatic Events.
Related products:Guide to using the Australian Archean Mafic-Ultramafic Magmatic Events Map
Proterozoic Mafic-Ultramafic Magmatic Events Resource Package
Australian Proterozoic Mafic-Ultramafic Magmatic Events: Map Sheets 1 and 2
Guide to Using the Australian Proterozoic Mafic-Ultramafic Magmatic Events Map
Proterozoic Large Igneous Provinces: Map Sheets 1 and 2
Guide to using the Map of Australian Proterozoic Large Igneous Provinces