Spruce tree ring slice

IMG_1755

Spruce: this spruce grew on a rocky mountainside in Switzerland. The first years of growth are normal, but the subsequent lobate growth was caused by rocks falling down the mountainside, crashing into the tree and destroying the cambium on part of the circumference – the rest of the tree grew slowly around to hide the scar.

Martin Bridge / UCL Dendrochronology Lab

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This entry was published on June 17, 2013 at 12:20 am and is filed under Uncategorized. Bookmark the permalink. Follow any comments here with the RSS feed for this post.

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