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Summary

Description
English: Composite aeromagnetic anomaly map of the Yarrabubba impact structure within the Yilgarn Craton, Western Australia, showing the locations of key outcrops and samples used in this study. The image combines the total magnetic intensity (TMI, cool to warm colours) with the second vertical derivative of the total magnetic intensity (2VD, greyscale) data81. The demagnetised anomaly centred on the outcrops of the Barlangi granophyre is considered to be the eroded remnant of the central uplift domain, which forms the basis of the crater diameter of 70 km18. Prominent, narrow linear anomalies that cross-cut the demagnetised zone with broadly east-west orientations are mafic dykes that post-date the impact structure.
Date
Source

https://www.nature.com/articles/s41467-019-13985-7

https://doi.org/10.1038/s41467-019-13985-7
Author Timmons M. Erickson, Christopher L. Kirkland, Nicholas E. Timms, Aaron J. Cavosie & Thomas M. Davison

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Captions

Map of the Yarrabubba impact structure and sample localities.

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21 January 2020

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10d47daf3e92f5e2f8e4125d63fe99b2dffa5666

322,764 byte

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993 pixel

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