0 past simple and past participle of zone
1 to give a special purpose to a particular area, such as an area in a town:
The former dockyard has been zoned for industrial use.
The oikocrysts become larger (4-5 cm) in the central olivine gabbros compared to marginal gabbros (0.5-2 cm) and are commonly optically zoned.
Apparently, their magma chambers were modestly heterogeneous but neither highly evolved nor systematically zoned from top to bottom.
The formation is vertically zoned with the appearance of banded and mafic pumices approximately 8 cm above the base of the ignimbrite.
This holistic space comprised an array of zoned spaces.
At the upper part of the section rounded and weakly zoned zircons (type 3) also appear.
Apparently, their magma chambers were only modestly heterogeneous and not systematically zoned from top to bottom.
Crystals are often broken, complexly zoned or in the form of ovoids.
They are well zoned and, in some cases, contain cores.
