Voices of time. (Film)
By: Ontario Educational Communications Authority.
Contributors: Crompton, Penny.; Wilson, J        Tuzo.; Ontario Educational Communications Authority.; Toronto, Ont. University. Erindale College.
Series: Planet of man
Publisher: OECA
Published: 1975
Place of publication: [Toronto]
Language: eng
Number of pages: 30
Subjects: Geological time.; Grand Canyon (Ariz.) -- History.
Description: The expanse of geological time is considered. The Grand Canyon of Arizona serves as the clock of prehistory in which half of the earth's time lies exposed in the rock's record. Discusses events which have left traces in the layers of the Grand Canyon. A look at 2 1/4 billion years.-
Notes: Also available in Videocassette 001360.-

Expiry date: March 4, 1976.-

producer/director, Penny Crompton; narrator, William Hutt; scenario, Michael Mercer; series science editor, Tuzo Wilson.-

Undergrad general; General

Also available on video.

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