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Imprints are not footprints.
- Source :
-
Chemical & Engineering News . 12/5/2005, Vol. 83 Issue 49, p52-52. 1/4p. - Publication Year :
- 2005
-
Abstract
- The article cites a study which determined that the age of the rocks containing important imprints near Puebla, Mexico are 1.3 million years old. This study refutes a former study which concluded that humans populated the Americans 30,000 years earlier than previously believed. The researchers performed various dating methods on sediments covering the imprints.
- Subjects :
- *GEOCHRONOMETRY
*ANCIENT civilization
*TIME measurements
Subjects
Details
- Language :
- English
- ISSN :
- 00092347
- Volume :
- 83
- Issue :
- 49
- Database :
- Academic Search Index
- Journal :
- Chemical & Engineering News
- Publication Type :
- Periodical
- Accession number :
- 19228882