Faulted and liquefied Lake Bonneville strata in Hansel Valley, VT, record a history of recurrent surface faulting which culminated in the 1934 M6.6 earthquake.Attempts to reconstruct the recurrence times of Quaternary faulting events was hindered by lack of carbonaceous material datable by 14 C methods.Thermoluminescence (TL) is a backbone in radiation protection dosimetry with a long tradition and used for a wide range of dosimetric purposes, including accident dosimetry, retrospective dosimetry, environmental dosimetry, personal dosimetry, clinical dosimetry, ...Two standard methods, the “fine-grain technique” and the “quartz inclusion technique”, and a new method, the pre-dose saturation exponential technique in thermoluminescence (TL) dating of ancient pottery and porcelain were reviewed, especially for the measurement of the paleodose and the annual dose.Therefore, although ceramic TL dating can in general solve the problem of authentication of ancient ceramics, there are still complexities that require further research and study.Thermoluminescence (TL) of minerals is the release of light when grains are heated to 1500 -5000 C.Better still, unlike radiocarbon dating, the effect luminescence dating measures increases with time.As a result, there is no upper date limit set by the sensitivity of the method itself, although other factors may limit the method's feasibility.
If the total amount of radiation dose received can be calculated, and the current dose rate measured, then dividing the total dose by the yearly dose rate will yield a TL age.
However, five TL dates from inorganic silty strata yielded dates from the Bonneville cycle (13 ka), an older lake cycle (76-82 ka), and from the Little Valley cycle (138 kale The faulting history derived from these dates indicated multiple faulting from 138-82 ka, only one faulting event from 82-27 ka (near the later date), possibly one event between 21 and 15 ka, one event at 13 ka, and another in 1934 A. Temporal clustering of earthquakes during episodes with deep lakes (oxygen isotope stages 6 and 2) suggests that water loading of the crust stimulated surface faulting events.
C dating, thermoluminescence is related to radioactive decay.
Thermoluminescence is produced by radioactive decay particles (electrons), trapped in mineral grains.
Heating the mineral (or exposure to light) releases electrons, and produces a flash of light, setting the clock to 0 (maybe only partial).