Dater Glacier
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The Dater Glacier () is a steep valley glacier in Antarctica, 38 km (24 mi) long and from 1.6 km to 4.8 km (1 to 3 mi) wide, flowing NE in a sinuous course from the eastern slopes of Vinson Massif to Rutford Ice Stream which borders the eastern flank of the Sentinel Range, Ellsworth Mountains. At the lower end the Dater Glacier coalesces with the terminus of the Ellen Glacier, the two emerging from the Sentinel Range as one stream just north of Flowers Hills.
Discovered by USN Squadron VX-6 on photographic flights of Dec. 14-15, 1959, and mapped from these photographs by USGS. Named by US-ACAN after Henry M. Dater, historian on the staff of the U.S. Antarctic Projects Officer and the U.S. Naval Support Force Antarctica.
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