Estudo químico de eflorescências salinas do sítio arqueológico Toca Exú do Jurubeba do Parque Nacional Serra da Capivara, Piauí, Brasil

A study of saline efflorescences at the archaeological site Toca Exú do Jurubeba in Serra da Capivara National Park, Brazil, revealed four distinct chemical compositions: hydrated calcium oxalate combined with kaolinite, gypsum, tetrahydrate calcium nitrate, and fossilized aluminosilicates. These efflorescences, which often obscure rock art—part of the park's globally significant archaeological heritage—were analyzed using optical microscopy, scanning electron microscopy, Fourier transform infrared spectroscopy, and laser-induced breakdown spectroscopy. The findings provide critical insights for developing conservation strategies to protect the site's vulnerable rock art from degradation.

Farias Filho, B. B., Lage, M. C. S. M., & Lima, R. A. M. d. (2017). Estudo químico de eflorescências salinas do sítio arqueológico Toca Exú do Jurubeba do Parque Nacional Serra da Capivara, Piauí, Brasil. Química Nova. https://doi.org/10.21577/0100-4042.20170100