Bif_in_time.jpg
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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 |
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