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Shelf of Water-laden Volcanic Tuff

Shelf of water-laden volcanic tuff

Shelf of water-laden volcanic tuff

Shelf of Quaternary water-laden tuff.

Photographer: Ann Youberg

Photo Date: March 2018

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We respectfully acknowledge the University of Arizona is on the land and territories of Indigenous peoples. Today, Arizona is home to 22 federally recognized tribes, with Tucson being home to the O’odham and the Yaqui. The university strives to build sustainable relationships with sovereign Native Nations and Indigenous communities through education offerings, partnerships, and community service.

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