What is osl dating
Turnaround time is dependent on the workload of the lab, so please enquire about the status when submitting samples. Unfortunately routine sample analysis can take up to five months, but can be longer for unusual materials or if any unexpected problems arise during processing. One room serves as preparation laboratory, where all incoming samples are unpacked and chemically treated to purify the sample and extract the desired minerals in the right grain size. The other room houses most of the modern electronic equipment, including: Please contact Ningsheng Wang (MSc.) for more information. Our luminescence dating service is available for researchers in New Zealand and overseas. We use optically stimulated luminescence (OSL) to date aeolian, fluvial, lacustrine and shallow water marine sediments, as well as most quartz or feldspar-bearing objects, which have seen sunlight or intense heat during deposition. We therefore welcome projects where low-level radioactivity is expected such as sediments from New Zealand and the Pacific Islands. Standard rate for routine work with priority processing: NZ00 GST per sample. Dating the Kawakawa/Oruanui eruption: comment on optical luminescence dating of a loess section containing a critical tephra marker horizon, SW North Island of New Zealand by R. This price includes all irradiation and luminescence measurements required to obtain the equivalent dose, and high resolution laboratory gamma-spectrometry for dose rate determination.
Grains are then optically stimulated by blue, green or infrared photons, and the OSL emissions are detected using a photomultiplier tube.
The age is obtained by measuring the radiation dose received by the sample since it was last bleached by sunlight, and dividing this estimate by the dose rate from environmental sources of ionising radiation.
The OSL dating laboratory is located in the School of Earth & Environmental Sciences and is headed by Bert Roberts and Zenobia Jacobs.
The OSL dating laboratory is also at the forefront of technical advances in the analysis and interpretation of OSL data collected from single sand-sized grains of quartz, building on the pioneering research of Roberts and Jacobs in this field.
The new, state-of-the-art laboratory consists of separate rooms for the preparation and measurement of quartz and feldspar grains, as well as storage rooms for quarantined material.
These sediments can be used to study ancient earthquakes, tsunamis, flooding and volcanic eruptions, as well as climate change, glaciation and tectonic uplift.