English: Photograph showing the 'golden spike' (bronze disk in the lower section of the image) of the Global Boundary Stratotype Section and Point (GSSP) for the Ediacaran period, located in the Flinders Ranges in South Australia. Able to be read when you click through to the full image. The core holes were made to study changes in the earth's magnetic field. (Source - sign at location).
Date 04/09/2009
Source Own work
Author Peter Neaum ( talk)

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  • 2010-05-27 08:44 Peter Neaum 1000×1183× (737615 bytes) {{Information |Description = |Source = I Peter Neaum created this work entirely by myself. |Date = 04/09/2009 |Author = ~~~ |other_versions = }}