In the former case they have thin concentric layers, and in the latter they have radiating sprays of crystals.
12.
Manganese nodules are rock concretions on the sea bottom formed of concentric layers of iron and manganese hydroxides around a core.
13.
The perineurium is composed of connective tissue, which has a distinctly lamellar arrangement consisting of roughly seven to eight concentric layers.
14.
The flesh of the fungus is purple, brown, or silvery-black inside, and is arranged in concentric layers.
15.
Balo concentric sclerosis is a demyelinating disease similar to standard multiple sclerosis, but with the particularity that the demyelinated tissues form concentric layers.
16.
The bulk of Fat Man's girth was the implosion mechanism, namely concentric layers of U-238, aluminium, and high explosives.
17.
Fiber optic coatings are applied in concentric layers to prevent damage to the fiber during the drawing application and to maximize fiber strength and microbend resistance.
18.
A notable feature of Cerro Panizos is the presence of so-called orbs, which are rocks with concentric layers of igneous material surrounding them.
19.
Just like the shell of a clam, a pearl is composed of calcium carbonate in minute crystalline form, which has been deposited in concentric layers.
20.
When saprolite is exposed by physical erosion, these concentric layers peel ( spall ) off as concentric shells much like the layers of a peeled onion.
