Summary: The Earth's surface is a fragile mask, and this Science Screen Report reveals the turmoil beneath it. A cutaway view of the planet depicts its layers-including its crust, hot mantle, and superheated core-and leads to an outline of plate tectonic theory. The Himalayas, the Matterhorn, and the Hawaiian Islands are analyzed as examples of tectonic and volcanic activity, while the core's...
Format: software, multimedia
Publisher / Publication Date: Films Media Group 2006
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Summary: The map of the Earth is a flat picture of the Earth's surface; this BBC Horizon program presents the story of how Harold Wellman changed that picture. Hired by the New Zealand Geological Survey to map the underlying bedrock of the Southern Alps region, he noticed that there were invariably only two kinds of rock, granite and schist. His search for the boundary between the two led to the...
Format: software, multimedia
Publisher / Publication Date: Films Media Group 2005