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ORBICULAR STRUCTURE [1 record]

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Record 1 1977-01-04

English

Subject field(s)
  • Geology
OBS

Said of the structure of a rock containing numerous orbicules (a more or less spherical body, from microscopic size to two or more centimeters in diameters, whose components are arranged in concentric layers).

French

Domaine(s)
  • Géologie
OBS

La structure orbiculaire (...) est due à l'existence de sphéroïdes formées d'enveloppes de feldspaths fibreux rayonnants alternant avec des couches de minéraux ferro-magnésiens.

Spanish

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