scholarly journals Dating of fossil human teeth and shells from Toca do Enoque site at Serra das Confusões National Park, Brazil

2016 ◽  
Vol 88 (2) ◽  
pp. 847-855 ◽  
Author(s):  
ANGELA KINOSHITA ◽  
HENRY L. SULLASI ◽  
VIVIANE K. ASFORA ◽  
RENATA L. AZEVEDO ◽  
PEDRO GUZZO ◽  
...  
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
National Park ◽  
Archaeological Site ◽  
Human Tooth ◽  
Esr Dating ◽  
Archaeological Excavation ◽  
Human Teeth ◽  
Spin Resonance ◽  
Dating Methods

ABSTRACT This work reports the dating of a fossil human tooth and shell found at the archaeological site Toca do Enoque located in Serra das Confusões National Park (Piauí, Brazil). Many prehistoric paintings have been found at this site. An archaeological excavation unearthed three sepulchers with human skeletons and some shells. Two Brazilian laboratories, in Ribeirão Preto (USP) and Recife (UFPE), independently performed Electron Spin Resonance (ESR) measurements to date the tooth and the shell and obtain the equivalent dose received by each sample. The laboratories determined similar ages for the tooth and the shell (~4.8 kyBP). The results agreed with C-14 dating of the shell and other samples (charcoal) collected in the same sepulcher. Therefore, this work provides a valid inter-comparison of results by two independent ESR-dating laboratories and between two dating methods; i.e., C-14 and ESR, showing the validity of ESR dating for this range of ages.

Electron spin resonance (ESR) dating of pre-Quaternary faults in the Sichuan basin, SW China

2018 ◽  
Vol 163 ◽  
pp. 142-151
Author(s):  
Dengfeng Qiu ◽  
Quanyou Liu ◽  
Jinbiao Yun ◽  
Zhijun Jin ◽  
Dongya Zhu ◽  
...  
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Sichuan Basin ◽  
Esr Dating ◽  
Sw China ◽  
Spin Resonance ◽  
The Sichuan Basin

ESR dating of Pleistocene fossil teeth from Alberta and Saskatchewan

1988 ◽  
Vol 25 (2) ◽  
pp. 235-245 ◽  
Author(s):  
Steve Zymela ◽  
Henry P. Schwarcz ◽  
Rainer Grün ◽  
A. MacS. Stalker ◽  
C. S. Churcher
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Fission Track ◽  
Temporal Sequence ◽  
Esr Dating ◽  
Surficial Sediments ◽  
Spin Resonance ◽  
The Absolute

Teeth collected from Pleistocene surficial sediments in southeastern Alberta and western Saskatchewan have been dated by electron spin resonance (ESR). The dates generally agree with the previously determined temporal sequence of the deposits, largely based on studies of fossil vertebrates and supplemented by some absolute ages, but the absolute ages of the oldest deposits appear to be much younger than previously estimated. Absolute ages (ESR) have been compared with faunal ages (using nomenclature of Stalker and Churcher): the age of Aftonian – early Kansan deposits at the Maser–Frisch site is 450 ± 30 ka; Kansan deposits in the Medicine Hat region range from 410 to 250 ka; Sangamon deposits at Mitchell Bluff are 67 ± 12 ka; middle Wisconsinan deposits at Empress, Alberta, are 34 ± 4 ka; postglacial beds near Medicine Hat give ages of 11 ± 2 ka (in agreement with 14C ages). At Wellsch Valley, however, ESR dates (280 ± 35 ka) are much younger than the age of about 1.5 Ma obtained from fauna, fission track, and paleomagnetics. This discrepancy may be due to late introduction of U into the teeth.

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