Zobrazeno 1 - 10
of 84
pro vyhledávání: '"D. J. Huntley"'
Autor:
Gwyn Lintern, D. J. Huntley, Roger MacLeod, Camille Brillon, Peter Bobrowsky, Drew Rotheram-Clarke
Publikováno v:
Proceedings of the 2020 International Symposium on Slope Stability in Open Pit Mining and Civil Engineering.
Future development in coastal northwest British Columbia requires safe, secure locations for infrastructure installations and communities. The challenge for managing environmental and infrastructure protection and site reclamation will be to accommod
Publikováno v:
Quaternary Science Reviews. 274:107272
Publikováno v:
Journal of Physics D: Applied Physics. 40:900-906
Electrons trapped in a certain unidentified defect in feldspars can escape it by tunnelling to a nearby site. We show that, for plagioclase feldspars with up to 5% Ca cation (peristerites), the tunnelling rate is directly related to the Ca content. A
Autor:
D. J. Huntley, Olav B. Lian
Publikováno v:
Quaternary Science Reviews. 25:2503-2512
Anomalous fading in feldspars is now understood to be caused by the tunnelling of electrons from one defect site to another. Here we present some experimental observations concerning the phenomenon. The fading rates of a variety of feldspar crystals
Publikováno v:
The Holocene. 16:17-29
Past aeolian activity was reconstructed at four dunefields in the prairie parkland and boreal forest of central Saskatchewan to elucidate landscape response to environmental change. Optical ages from stabilized dunes in the boreal transition ecoregio
Autor:
Marc René Baril, D. J. Huntley
Publikováno v:
Journal of Physics: Condensed Matter. 15:8029-8048
A new high-sensitivity wide-bandwidth 1.25–5.5 eV (225–1000 nm) spectrometer has been constructed to measure luminescence emission spectra of minerals that are of interest for optical dating. Spectra of emission resulting from 1.43 eV (IR) excita
Autor:
D. J. Huntley, Marc René Baril
Publikováno v:
Journal of Physics: Condensed Matter. 15:8011-8027
The dependence of optically stimulated luminescence spectra on the energy of excitation photons has been investigated for a wide range of feldspars. In the vicinity of the 1.44 eV resonance, the spectra are in many cases best described by a Voigt pro
Autor:
John R. Prescott, D. J. Huntley
Publikováno v:
Quaternary Science Reviews. 20:687-699
Our thermoluminescence dating technique for quartz extracted from late Pleistocene sediments has been improved by the addition of a 33 h 160°C preheat before measurements. This yields better plateaux, which now encompass the region known as the 325
Publikováno v:
Quaternary Science Reviews. 20:1915-1926
Optical ages for five samples of tsunami-laid sand from an Oregon coastal lake were determined using an infrared optical-dating method on K-feldspar separates and, as a test of accuracy, compared to ages determined by AMS 14C dating of detrital plant
Autor:
Michel Lamothe, D. J. Huntley
Publikováno v:
Canadian Journal of Earth Sciences. 38:1093-1106
Anomalous-fading rates were measured in K-feldspars separated from 49 sediment samples, mainly from North America. The intensity of the optically stimulated luminescence was found to decrease linearly with the logarithm of time since irradiation betw