| Reference Type | Journal (article/letter/editorial) |
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| Title | Archean variolites: source of iron in the Precambrian environment? |
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| Journal | Canadian Journal of Earth Sciences |
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| Authors | Brooks, C. | Author |
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| Year | 1977 (March 1) | Volume | 14 |
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| Issue | 3 |
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| Publisher | Canadian Science Publishing |
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| DOI | doi:10.1139/e77-054Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 475281 | Long-form Identifier | mindat:1:5:475281:7 |
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| GUID | 0 |
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| Full Reference | Brooks, C. (1977) Archean variolites: source of iron in the Precambrian environment?. Canadian Journal of Earth Sciences, 14 (3) 511-513 doi:10.1139/e77-054 |
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| Plain Text | Brooks, C. (1977) Archean variolites: source of iron in the Precambrian environment?. Canadian Journal of Earth Sciences, 14 (3) 511-513 doi:10.1139/e77-054 |
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| In | (1977, March) Canadian Journal of Earth Sciences Vol. 14 (3) Canadian Science Publishing |
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| Abstract/Notes | Archean variolitic lavas contain matrix fractions possessing spectacularly high iron contents (up to 24 wt.% total FeO). The amount of iron contained in a single variolite horizon is greater than 1 × 1012 kg, a source of magmatic iron large enough to account for the iron required to form banded iron formation (BIF) early in the earth's history. The time distribution of BIF and variolites may be related, via the liquidus-depressant role of water in immiscible processes, to the increased likelihood of encountering 'wet', immiscibility-prone, partial-melt mantle derivates. Alternatively BIF may simply be the product of chemical degradation of these variolites. |
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