Structural controls and stratigraphic setting of sills: Example of the Central Atlantic Magmatic Province in the Parnaíba Basin, Northeast Brazil

Luminescence signals of quartz and feldspar as new methods for stratigraphic discrimination and provenance analysis of siliciclastic successions: The case of the Parnaíba Basin (Brazil) of West Gondwana

“…Besides the sensitisation by illumination‐irradiation cycles, the OSL sensitivity increases significantly when quartz is submitted to heating. However, the sensitisation by heating is only significant under temperatures above 500°C (Bøtter‐Jensen et al., 1995), which is beyond the burial temperatures reached in sedimentary basins, including basins that experienced magmatic events, such as the Parnaíba Basin, because the thermal effect of emplaced magmatic bodies is spatially limited at basin scale (Da Silva et al., 2020). On the other hand, high radiation doses (>800 kGy) absorbed by quartz grains during long‐term burial can hypothetically lead to luminescence desensitisation as observed by laboratory experiments (Autzen et al., 2018; Sawakuchi & Okuno, 2004).…”