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GEOREF RECORD
Oldest rocks exposed
Louis Herman Ahrens
Oldest rocks exposed (in Crust of the earth--a symposium, A. Poldervaart (editor))
Special Paper - Geological Society of America (July 1955) 62: 155-168
Oldest rocks exposed (in Crust of the earth--a symposium, A. Poldervaart (editor))
Special Paper - Geological Society of America (July 1955) 62: 155-168
Index Terms/Descriptors
Abstract
Radioactive methods of age measurement show that pegmatites of Southern Rhodesia and southeastern Manitoba are among the oldest known rocks. There is evidence also of even older rocks, but the possibility of finding older pegmatites is slight. Comparisons of the age of the oldest rocks with estimates of the age of the earth, meteorites, the universe, and elements show striking agreement.
ISSN: 0072-1077
EISSN: 2331-219X
Coden: GSAPAZ
Serial Title: Special Paper - Geological Society of America
Serial Volume: 62
Title: Oldest rocks exposed
Title: Crust of the earth--a symposium
Pages: 155-168
Published: 195507
Text Language: English
Publisher: Geological Society of America (GSA),
Boulder, CO,
United States
DOI:
10.1130/SPE62-p155
Accession Number: 1959-040995
Categories: Solid-earth geophysics
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from Bibliography and Index of North American Geology, U. S. Geological Survey, Reston, VA, United States
Update Code: 1959
