26 - response to wounding Buried in sediments, after...

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GSC 26/03/2008 10:44:00 …. opal is a silicic gel = tiny transparent spheres carry gel in a uniform 3D grid silicic solutions are trapped in spheres in spaces of light Precious opal (gem quality)  3.  Biogenic sedimentary rocks (“life-produced”) b.  organic o made of organic material (C, H, O compounds produced by living  plants/animals) o examples:  amber Amber Fossilized tree resin Originally produced by certain species of conifer trees in 
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Unformatted text preview: response to wounding Buried in sediments, after millions of years is transformed into amber Intermediate phase (< ~ 100,000 yrs) = copal (burned as resin) Color/appearance of amber depends on Type of tree that produced resin Conditions of burial huge effect on shape age most famous sources of amber: 1. Baltic Sea (Scandinavia) almost always opaque 2. Dominican Republic (Caribbean) 26/03/2008 10:44:00 26/03/2008 10:44:00...
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26 - response to wounding Buried in sediments, after...

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