Abstract
MR. ARTHHUR J. DAVIS, of the U.S. Reclamation Service, describes in the National Geographic Magazine for January the startling changes that are now taking place in the region north of the Gulf of California. for 150 miles from the apex of the gulf, an area of delta and alluvium and old sea-bottom extends to the north-west between Ihe mountains. The upper part of thi basin forms the Imperial Valley, and lies in the territory of the United States. Below the Mexican frontier, the Colorado River, emerging from the hills, has built up a huge alluvial barrier above the level of the land to the north of it. This in its growth cut off the head of the ancient gulf, and led to the gradual disappearance of the water by evaporation.
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Man and Superman . Nature 75, 501 (1907). https://doi.org/10.1038/075501a0
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DOI: https://doi.org/10.1038/075501a0