File:A Scourie Dyke - geograph.org.uk - 833049.jpg
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Summary
A Scourie Dyke The line of dark rock cutting through the paler gneiss is a Scourie dyke. Scourie dykes were intruded between 2400 and 2200 million years ago into the Lewisian gneiss, which is at least 2700 million years old. This is a very narrow dyke, but they can be up to tens of metres in width. Notice how sharp the contact between the dyke and the country rock is.
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 21:12, 12 January 2017 | | 507 × 640 (346 KB) | 127.0.0.1 (talk) | A Scourie Dyke The line of dark rock cutting through the paler gneiss is a Scourie dyke. Scourie dykes were intruded between 2400 and 2200 million years ago into the Lewisian gneiss, which is at least 2700 million years old. This is a very narrow dyke, but they can be up to tens of metres in width. Notice how sharp the contact between the dyke and the country rock is. |
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