Terrane n. (Geog.) A region or limited area considered with reference to some special feature; as, the terrane of a river, that is, its drainage basin.
... come here to see it. So make yourself as wise as you can while you are here and have the chance. Read Dr. Walcott's monograph from the fourteenth report of the United States Geological Survey, Volume No. 2, entitled "Pre-Cambrian Igneous Rocks of the Unkar Terrane." Then read Major Powell's luminous earlier descriptions of these rocks in his "Explorations of the Colorado River of the West." Learn from their own words what these geological masters say of these wonderful five hundred ... — The Grand Canyon of Arizona: How to See It, • George Wharton James
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