نتایج جستجو برای: Luminescence dating

تعداد نتایج: 27251  

2014
Martina Demuro Lee J. Arnold Josep M. Parés Alfredo Pérez-González Ana I. Ortega Juan L. Arsuaga José M. Bermúdez de Castro Eudald Carbonell Michael D. Petraglia

The archaeological karstic infill site of Galería Complex, located within the Atapuerca system (Spain), has produced a large faunal and archaeological record (Homo sp. aff. heidelbergensis fossils and Mode II lithic artefacts) belonging to the Middle Pleistocene. Extended-range luminescence dating techniques, namely post-infrared infrared stimulated luminescence (pIR-IR) dating of K-feldspars a...

Journal: :فیزیک زمین و فضا 0
morteza fattahi associate professor, department of earth physics, institute of geophysics, university of tehran, iran richard walker department of earth sciences, university of oxford, parks road, england

we have investigated an optically stimulated luminescence (osl) dating study in the nimbluk lakebed in khorasan, northeast iran. two samples of the lake-bed sediments from ~1 m below the land surface are successfully dated at 7.3-9.9 ka. all necessary experiments have been performed to choose the most suitable procedure for dating quartz extracts using single aliquot regeneration method (sar). ...

2017
Stephen Tooth

Definition Geomorphology is the science that studies the origin and development of landforms and how those landforms combine to form landscapes. Landforms are shaped by geomorphological processes, many of which involve the weathering, erosion, transportation, and deposition of surface materials (rock, sediment) by gravity, ice, wind, or water. Both erosional and depositional landforms can be id...

2003
James K Feathers

With improvements in methodology and instrumentation, luminescence dating is becoming a much more useful chronometric tool in archaeology. Procedures for dating ceramics are relatively routine and their accuracy has been demonstrated in a number of studies. Research is aimed at applying ceramic dating in situations where other methods lack the direct dating ability of luminescence to resolve ch...

2010
Marvin Suggs Derek Sears Alan Mantooth

Introduction: To examine the geological and climatic history on Mars, we investigate an instrument design for robotic, in-situ, Optically Stimulated Luminescence dating (OSL). In this paper, we discuss the basic concepts of OSL, its benefits, and how this technique can be utilized on Mars. Also presented are the vital electronics needed for an instrument design and some of their basic operation...

Journal: :Journal of human evolution 2008
Michael Chazan Hagai Ron Ari Matmon Naomi Porat Paul Goldberg Royden Yates Margaret Avery Alexandra Sumner Liora Kolska Horwitz

We present here the results of 44 paleomagnetic measurements, and single cosmogenic burial and optically stimulated luminescence ages for the Earlier Stone Age deposits from Wonderwerk Cave, Northern Cape, South Africa. The resulting paleomagnetic sequence: N>R>N>R>N constrains the Earlier Stone Age strata in this part of the site to between approximately 0.78-1.96 Ma. A single cosmogenic date ...

Journal: :Geoscience Canada 2019

2008
MARKUS FUCHS

Dating glacial and associated sediments is essential to provide a temporal framework for accurate reconstructions of past climatic conditions and for helping to determine the nature and magnitude of glaciation for landscape evolution studies. There are few widely applicable, accurate and precise methods available to date Quaternary landforms and sediments, despite the numerous numerical dating ...

2009
A. A. Martins P. P. Cunha S. Huot A. S. Murray J. P. Buylaert

A suite of fluvial terraces (T1–T6, from top to bottom of the staircase) occur along a 70 km stretch of the Tejo River in central Portugal, between the small towns of Gavião and Chamusca. Terrace correlation was based upon the following: (a) aerial photograph analysis, geomorphological mapping and field topographic survey; (b) sedimentology of the terrace deposits, namely the maximum particle s...

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