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Summary
| Description |
English: This graph shows the relative abundance of banded iron formations in the geologic record, as a function of time before the present. Color indicates dominant type. Red = older Archean formations; green = Greater Gondwana formations; blue = granular iron formations; black = Snowball Earth formations. Adapted from Trendall, A.F. (2002). "The significance of iron-formation in the Precambrian stratigraphic record". In Altermann, Wladyslaw; Corcoran, Patricia L. (eds.). Precambrian Sedimentary Environments: A Modern Approach to Ancient Depositional Systems. Blackwell Science Ltd., ISBN 0-632-06415-3 |
| Date | |
| Source | Own work |
| Author | Kent G. Budge |
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
 
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This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. |
| The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 02:23, 8 August 2022 | | 792 × 612 (37 KB) | Kent G. Budge | Change to a color scheme more easily distinguished by persons with impaired color vision |
| 16:02, 18 June 2020 |  | 792 × 612 (30 KB) | Kent G. Budge | Uploaded own work with UploadWizard |
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