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Richard G Roberts

Dose

Articles 1 - 5 of 5

Full-Text Articles in Life Sciences

Equivalent Dose Distributions From Single Grains Of Quartz At Sibudu, South Africa: Context, Causes And Consequences For Optical Dating Of Archaeological Deposits, Richard Roberts, Zenobia Jacobs, Geoffrey Duller, Ann Wintle Mar 2013

Equivalent Dose Distributions From Single Grains Of Quartz At Sibudu, South Africa: Context, Causes And Consequences For Optical Dating Of Archaeological Deposits, Richard Roberts, Zenobia Jacobs, Geoffrey Duller, Ann Wintle

Richard G Roberts

No abstract provided.


Stochastic Modelling Of Multi-Grain Equivalent Dose (De) Distributions: Implications For Osl Dating Of Sediment Mixtures, Richard Roberts, Lee Arnold Mar 2013

Stochastic Modelling Of Multi-Grain Equivalent Dose (De) Distributions: Implications For Osl Dating Of Sediment Mixtures, Richard Roberts, Lee Arnold

Richard G Roberts

No abstract provided.


A Dual-Aliquot Regenerative-Dose Protocol (Dap) For Thermoluminescence (Tl) Dating Of Quartz Sediments Using The Light-Sensitive And Isothermally Stimulated Red Emissions, Richard Roberts, Kira Westaway Mar 2013

A Dual-Aliquot Regenerative-Dose Protocol (Dap) For Thermoluminescence (Tl) Dating Of Quartz Sediments Using The Light-Sensitive And Isothermally Stimulated Red Emissions, Richard Roberts, Kira Westaway

Richard G Roberts

No abstract provided.


A Revised Burial Dose Estimation Procedure For Optical Dating Of Young And Modern-Age Sediments, Richard Roberts, Lee Arnold, R.F. Galbraith, S Delong Mar 2013

A Revised Burial Dose Estimation Procedure For Optical Dating Of Young And Modern-Age Sediments, Richard Roberts, Lee Arnold, R.F. Galbraith, S Delong

Richard G Roberts

No abstract provided.


Luminescence Characteristics And Dose Distributions For Quartz And Feldspar Grains From Mumba Rockshelter, Tanzania, Luke Gliganic, Zenobia Jacobs, Richard Roberts Mar 2013

Luminescence Characteristics And Dose Distributions For Quartz And Feldspar Grains From Mumba Rockshelter, Tanzania, Luke Gliganic, Zenobia Jacobs, Richard Roberts

Richard G Roberts

Mumba rockshelter is a key archaeological site for the Middle and Later Stone Age occupation of East Africa, but its chronology has remained unresolved. We report the results of a dating study, focussing on the characterisation of the optically stimulated luminescence (OSL) and infrared stimulated luminescence (IRSL) properties of quartz- and potassium-rich feldspar grains. Quartz has previously proven troublesome for dating in East Africa. We identified five general types of quartz grain behaviour, based on the shapes of their OSL decay and dose–response curves. Dose recovery experiments and measurement of the natural samples revealed particular problems with quartz grains that …