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File:Eclogite (15097443922).jpg
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Size of this preview: 800 × 482 pixels. Other resolutions: 320 × 193 pixels | 640 × 386 pixels | 1,024 × 617 pixels | 1,280 × 771 pixels | 1,777 × 1,071 pixels.
Original file (1,777 × 1,071 pixels, file size: 521 KB, MIME type: image/jpeg)
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This is a file from the Wikimedia Commons |
Summary
| Description |
Eclogite with almandine garnet and omphacite pyroxene, from an unrecorded locality. (9.2 centimeters across at its widest) Eclogite is an attractive, uncommon, crystalline-textured, very high-grade metamorphic rock. It is dominated by green & red minerals. The red is pyrope or almandine garnet. The green is omphacite pyroxene. Eclogite appears to be moderately common in portions of the upper mantle, but it occurs in very few places at the Earth’s surface. They have the same chemistry, but different mineralogy, as basalts & gabbros (= oceanic crustal rocks). Eclogites form by very high grade metamorphism of oceanic crust (basalts & gabbros) at mantle depths along subduction zones. Uplift of eclogites back to the surface often involves some retrograde metamorphism and the formation of new minerals, resulting in retrograde eclogites. |
| Date | |
| Source | Eclogite |
| Author | James St. John |
Licensing
This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/15097443922 (archive). It was reviewed on 11 December 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 06:20, 11 December 2019 | | 1,777 × 1,071 (521 KB) | Ser Amantio di Nicolao | Transferred from Flickr via #flickr2commons |
File usage
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