The age of Upper Pleistocene marine deposits of the Boreal transgression on the basis of electron-spin-resonance (ESR) dating of subfossil mollusc shells

Boreas ◽  
2008 ◽  
Vol 17 (2) ◽  
pp. 267-272 ◽  
Author(s):  
ANATOLY MOLODKOV ◽  
ANTO RAUKAS
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Esr Dating ◽  
Upper Pleistocene ◽  
Marine Deposits ◽  
Spin Resonance ◽  
Mollusc Shells

Recent human evolution in northwestern Africa

1992 ◽  
Vol 337 (1280) ◽  
pp. 185-191 ◽  
Keyword(s):  
Electron Spin Resonance ◽  
Human Evolution ◽  
Electron Spin ◽  
Esr Dating ◽  
Upper Pleistocene ◽  
Biological Barrier ◽  
Oxygen Isotope Stage ◽  
Spin Resonance ◽  
Sub Saharan ◽  
Northwestern Africa

The first modern humans in the Maghreb are said to be associated with the Aterian industries which appeared at least 40 ka BP in the northwest. Their predecessors are mainly represented by the Jebel Irhoud (Morocco) specimens. Palaeontological evidence, as well as electron spin resonance (ESR) dating, suggests that this series is older than previously published, and should belong to oxygen isotope stage 5 or even 6. There is no evidence of any Neanderthal apomorphy in this group which can no longer be considered as ‘African Nanderthals’. Clear synapomorphies with modern man combined with some plesiomorphic retentions indicate a slightly more primitive (and older?) grade than the Qafzeh-Skhul sample in southwestern Asia. The Northwestern evidence demonstrates that the mediterranean sea was a major biological barrier during the upper Middle and lower Upper Pleistocene and that the rise of anatomically modern features cannot be restricted to a sub-Saharan of eastern African area.

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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