File:Garnet paragneiss Nuvvuagittuq Greenstone Belt, 4.28 Ga.jpg
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Summary
Garnet paragneiss ("faux-amphibolite") (3.0 cm across at its widest), dating to 4.28 Ga, the oldest known Earth rock of which direct samples are available.
Reported minerals: garnet, cummingtonite amphibole, biotite mica, quartz, plagioclase feldspar, anthophyllite, cordierite.
Geology & age: Nuvvuagittuq Greenstone Belt, Eoarchean, 4.28 Ga.
Locality: western Ungava Peninsula, eastern side of Hudson Bay, northwestern Quebec, eastern Canada (= locality of O'Neil et al., 2008, Science 321: 1828-1831).
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 17:09, 12 January 2017 | | 2,962 × 1,683 (1.56 MB) | 127.0.0.1 (talk) | <p>Garnet paragneiss ("faux-amphibolite") (3.0 cm across at its widest), dating to 4.28 Ga, the oldest known Earth rock of which direct samples are available. </p> <p>Reported minerals: garnet, cummingtonite amphibole, biotite mica, quartz, plagioclase feldspar, anthophyllite, cordierite. </p> <p>Geology & age: Nuvvuagittuq Greenstone Belt, Eoarchean, 4.28 Ga. </p> <p>Locality: western Ungava Peninsula, eastern side of Hudson Bay, northwestern Quebec, eastern Canada (= locality of O'Neil et al., 2008, Science 321: 1828-1831). </p> |
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