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Oilfield Glossary
Oilfield Glossary
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aeolotropy

Anisotropy - isotropy comparison
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1. n. [Geology, Geophysics, Shale Gas]
Predictable variation of a property of a material with the direction in which it is measured, which can occur at all scales. For a crystal of a mineral, variation in physical properties observed in different directions is aeolotropy (also known as anisotropy). In rocks, variation in seismic velocity measured parallel or perpendicular to bedding surfaces is a form of aeolotropy. Often found where platy minerals such as micas and clays align parallel to depositional bedding as sediments are compacted, aeolotropy is common in shales.
Synonyms: anisotropy
Antonyms: isotropy