Примери за zoned

• 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.

• They are twinned and/or zoned short prismatic crystals that often form groups or clusters, accompanied by oxide inclusions.

• Ignimbrites of comparable bulk composition in this geological setting are usually part of zoned sheets and/or frequently very crystal-rich.

• They are more iron-rich in the central gabbroic pegmatite where there is a tendency for the grains to be less zoned.

• The dominant oscillatory zoned zircon is variably preserved, with areas of recrystallization common.

• Many clinopyroxene phenocrysts are zoned, with actinolite in some cores.

• Feldspar, generally zoned, is common as phenocrysts and megacrysts.

• The present model describes one mechanism by which such zoned deposits may be generated by disequilibrium growth kinetics and remote solidification.