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Title: Age of an Indonesian Fossil Tooth Determined by Electron Paramagnetic Resonance

Abstract

The first fossil hominid tooth recovered during 1999 excavations from the Cisanca River region in West Java, Indonesia, was associated with a series of bovid teeth from a single individual that was recovered 190 cm beneath the hominid tooth. The age of the fossil bovid teeth was determined using electron paramagnetic resonance (EPR) analysis as part of an effort to bracket the age of the hominid tooth. The EPR-derived age of the bovid teeth is (5.16 {+-} 2.01) x 10{sup 5} years. However, the age estimate reported here is likely an underestimate of the actual age of deposition since evidence of heating was detected in the EPR spectra of the bovid teeth, and the heating may have caused a decrease in the intensity of EPR components on which the age calculation is based.

Authors:
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE; NATIONAL SCIENCE FOUNDATION (US)
OSTI Identifier:
838101
Report Number(s):
ORNL/TM-2004/85
TRN: US200507%%321
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 7 Apr 2004
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; DEPOSITION; ELECTRON SPIN RESONANCE; HEATING; RIVERS; SPECTRA; TEETH

Citation Formats

Bogard, JS. Age of an Indonesian Fossil Tooth Determined by Electron Paramagnetic Resonance. United States: N. p., 2004. Web. doi:10.2172/838101.
Bogard, JS. Age of an Indonesian Fossil Tooth Determined by Electron Paramagnetic Resonance. United States. https://doi.org/10.2172/838101
Bogard, JS. 2004. "Age of an Indonesian Fossil Tooth Determined by Electron Paramagnetic Resonance". United States. https://doi.org/10.2172/838101. https://www.osti.gov/servlets/purl/838101.
@article{osti_838101,
title = {Age of an Indonesian Fossil Tooth Determined by Electron Paramagnetic Resonance},
author = {Bogard, JS},
abstractNote = {The first fossil hominid tooth recovered during 1999 excavations from the Cisanca River region in West Java, Indonesia, was associated with a series of bovid teeth from a single individual that was recovered 190 cm beneath the hominid tooth. The age of the fossil bovid teeth was determined using electron paramagnetic resonance (EPR) analysis as part of an effort to bracket the age of the hominid tooth. The EPR-derived age of the bovid teeth is (5.16 {+-} 2.01) x 10{sup 5} years. However, the age estimate reported here is likely an underestimate of the actual age of deposition since evidence of heating was detected in the EPR spectra of the bovid teeth, and the heating may have caused a decrease in the intensity of EPR components on which the age calculation is based.},
doi = {10.2172/838101},
url = {https://www.osti.gov/biblio/838101}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Apr 07 00:00:00 EDT 2004},
month = {Wed Apr 07 00:00:00 EDT 2004}
}