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Asymmetric boudins of a quartz-feldspatic layer within high-grade marbles, Ross Orogen. Nussbaum Riegel, Dry Valleys (Taylor Valley), Victoria Land (Antarctica). PhotoID185

Asymmetric boudins of a quartz-feldspatic layer within high-grade marbles, Ross Orogen. Nussbaum Riegel, Dry Valleys (Taylor Valley), Victoria Land (Antarctica). PhotoID185

Photograph: R. Carosi