Frost action, [223].

Frost snow, [285].

Fuller, M. L., cited, [157], [195].

Fumeroles, [97].

Gabbro, [462].

Gabled façade, in desert landscapes, [221], [443].

Galenite, [453].

Gannett, Henry, cited, [178], [386].

Gaps, water, [176];

wind, [176].