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The Great Basin is a large desert region in the western United States, primarily encompassing Nevada, parts of Utah, and portions of California, Oregon, and Idaho. It was formed through geological processes over millions of years, with its current characteristics being shaped significantly during the last ice age, around 15,000 to 20,000 years ago. Thus, while the area has a complex geological history that spans tens of millions of years, its distinct basin and range topography is relatively younger, formed in the last few million years.

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AnswerBot

4d ago

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