Ανασύνθεση παλαιοπεριβάλλοντος σε παράκτιες γεωμορφές της νότιας Κύπρου με την χρήση τεχνικών φωταύγειας
type: CreativeWork
description: Absolute dating methods have been developed during the last five decades (Jull and Scott, 2007). The most common methods applied to minerals’ dating are cosmogenic radionuclides, Electron Spin Resonance (ESR) and luminescence techniques. The latter were initially used to date burned minerals from archaeological artefacts (Thermoluminescence (TL) method). However, advancements of this technique led to the development, of the optical dating method (usually referred to as Optically Stimulated Luminescence (OSL)) which is now applied to sediments from various origins (aeolian, fluvial, marine and colluvial) and has been proven to be increasingly advantageous, especially for dating sediments that were deposited since the Late Quaternary (Wintle, 2008). The importance of luminescence dating lies on the fact that the method determines how long ago sediments were last exposed to daylight or heat rather than sediment’s comminution from parent rock which usually took place a very long time before. This characteristic makes luminescence a very advantageous technique in dating sedimentary formations, in which their luminescence signal has restarted during their formation. Sedimentary environments contain amounts of radioactive isotopes of elements such as potassium, uranium and thorium. Their decay produces ionizing radiation which is absorbed by common mineral grains such as quartz and feldspar which are found in the sediments. This radiation is “stored” within the mineral grains in structurally unstable “electron traps”. The trapped radiation “builds up” over time at a rate determined by the amount of the available radiation at the spot where the sample was buried. Stimulating the electon traps using either light or heat causes the release of the trapped radiation and the emission of a luminescence signal, the intensity of which depends on the amount of radiation stored during burial and the specific properties of the mineral. The date of a sample is obtained from the ratio o…
abstract: Absolute dating methods have been developed during the last five decades (Jull and Scott, 2007). The most common methods applied to minerals’ dating are cosmogenic radionuclides, Electron Spin Resonance (ESR) and luminescence techniques. The latter were initially used to date burned minerals from archaeological artefacts (Thermoluminescence (TL) method). However, advancements of this technique led to the development, of the optical dating method (usually referred to as Optically Stimulated Luminescence (OSL)) which is now applied to sediments from various origins (aeolian, fluvial, marine and colluvial) and has been proven to be increasingly advantageous, especially for dating sediments that were deposited since the Late Quaternary (Wintle, 2008). The importance of luminescence dating lies on the fact that the method determines how long ago sediments were last exposed to daylight or heat rather than sediment’s comminution from parent rock which usually took place a very long time before. This characteristic makes luminescence a very advantageous technique in dating sedimentary formations, in which their luminescence signal has restarted during their formation. Sedimentary environments contain amounts of radioactive isotopes of elements such as potassium, uranium and thorium. Their decay produces ionizing radiation which is absorbed by common mineral grains such as quartz and feldspar which are found in the sediments. This radiation is “stored” within the mineral grains in structurally unstable “electron traps”. The trapped radiation “builds up” over time at a rate determined by the amount of the available radiation at the spot where the sample was buried. Stimulating the electon traps using either light or heat causes the release of the trapped radiation and the emission of a luminescence signal, the intensity of which depends on the amount of radiation stored during burial and the specific properties of the mineral. The date of a sample is obtained from the ratio o…
author: Τσάκαλος, Ευάγγελος
language: en
keywords: Palaeoenvironmental reconstraction, Luminescence dating techniques, 551.701, Ανασύνθεση παλαιοπεριβάλλοντος
date published: 2017-03-10T07:25:57Z
date modified: 2026-07-27T20:29:14Z
provider: University of Patras
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: University of Patras

PropertyValue
property ID: Handle
value: http://hdl.handle.net/10889/10158