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Latest Blog Posts
25
AugUnited States National Park Service Birthday!
On August 25, 1916, the United States National Park Service was created by Congress through the National Park Service Organic Act to care for all national parks, historic battlefields, and monuments throughout the country. More than 400 National Parks … Continue reading →
24
AugPliny’s Play-by-Play
On August 24, 79, the first recorded explosion of Mount Vesuvius, Italy, was witnessed by the 18-year-old nephew of the Commander of the Roman Fleet. His uncle sailed with ships to rescue survivors, leaving the teen to observe the … Continue reading →
Tag Archives: Marie Tharp
Graphic Plots
On July 30, 1920, Marie Tharp was born in Ypsilanti, Michigan. A pioneering oceanographic cartographer, she mapped the ocean floor and co-discovered the Mid-Oceanic Ridges, along with her colleague Bruce Heezen, Columbia University’s team leader of ocean ridge mapping. As … Continue reading
Posted in On This Day
Tagged cartography, Columbia University, Heezen-Tharp, July 30, Marie Tharp, Mid-Atlantic Ridge, Mid-Oceanic Ridges, ocean cartography, On This Day, plate tectonics, The Roberta Bondar Foundation
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