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These charge defects are potential sites of electron storage with a variety of trap-depth energies.A subpopulation of stored electrons with trap depths of ~1.3 to 3 e V is a subsequent source for time-diagnostic luminescence emissions.OSL is an acronym for Optically-Stimulated Luminescence.

A certain percent of the freed electrons become trapped in defects or holes in the crystal lattice of the quartz sand grain (referred to as luminescent centers) and accumulate over time (Aitken, 1998).Discovery of Giant, Ultra-Deep Paleo-Reservoirs in the Tarim Basin and Geochemical Origin of Crude Oil, Guangyou Zhu, Feiran Chen, Na Weng, Haijun Yang, Huitong Wang, and Zhiyao Zhang, #10986 (2017). Petroleum Geology of the Crow Indian Reservation, South-Central Montana, David A. Reservoir Optimization, Mechanical Stratigraphy, and Stress Field Orientation in the Woodford Shale SCOOP (South Central Oklahoma Oil Province) Play: A Case Study from Grady County, Oklahoma, Carlos Molinares, Muizz Matemilola, Jing Zhang, Henry Galvis, Daniela Becerra, Lenon Infante, and Roger Slatt, #10984 (2017). Effective Application of Inorganic Geochemical Data in Shale Resource Plays: A Case Study from the Appalachian Basin, Nahysa Martinez-Kulikowski, Milly Wright, and Andrea Reynolds, #10556 (2013). As sediment is transported by wind, water, or ice, it is exposed to sunlight and zeroed of any previous luminescence signal.Once this sediment is deposited and subsequently buried, it is removed from light and is exposed to low levels of natural radiation in the surrounding sediment.

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