Alaa el-Shazly

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Seven eclogite facies samples from lithologically different units which structurally underlie the Semail ophiolite were dated by the 40 Ar/ 39 Ar and Rb–Sr methods. Despite extensive efforts, phengite dated by the 40 Ar/ 39 Ar method yielded saddle, hump or irregularly shaped spectra with uninterpretable isochrons. The total gas ages for the phengite ranged(More)
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