undulatory extinction

undulatory extinction

[′ən·jə·lə‚tȯr·ē ik′stiŋk·shən]
(optics)
Extinction that occurs successively in adjacent areas as the microscope stage is turned. Also known as oscillatory extinction; strain shadow; wavy extinction.
References in periodicals archive ?
1975): Re-evaluation of the use of undulatory extinction and pollycrystallinity in detrital quartz for provenance interpretation.
Reevaluation of the use of undulatory extinction and polycrystalline in detrial quartz provenance interpretation.
Undulatory extinction in quartz of igneous and metamorphic rocks and its significance in provenance study of sedimentary rocks, Journal of Sedimentary Petrology, Vol.