RT info:eu-repo/semantics/article
T1 Diagenetic processes in the fossilized carapace of Neosclerocalyptus sp. from the Paraguayan Chaco
A1 Buzarquis Arias, Deyne Simone Mariel
A1 Herrera, Edher Zacarias
A1 Colmán Patiño, Christian Fernando
A1 Sarubbi Jacks, Yennifer
A1 Ríos Díaz, Sergio Daniel
A1 Souberlich Barúa, Ricardo Froilan
A1 Sánchez González, Christian Javier
A1 Matos da Silva Costa, Alex
A2 Universidad Nacional de Asunción. Facultad de Ciencias Exactas y Naturales
AB Paleometry is essential in analyzing fossil remains, revealing diagenetic processes through physicochemical characterization techniques that identify crystalline and chemical structures, as well as elemental composition and changes observed via electron microscopy. This study examines the fossilized carapace of Neosclerocalyptus sp. from the Paraguayan Chaco, employing these methodologies to understand its diagenetic transformation. Fourier transform infrared (FT-IR) spectra identified phosphate, carbonate, and amide I and II groups. The Gaussian deconvolution model applied to the FT-IR spectra distinguished individual bands within overlapping vibrational modes, providing insights into the presence of stoichiometric and non-stoichiometric calcium phosphates. X-ray diffraction patterns confirmed the crystallinity and apatite nature of the sample, while energy dispersive X-ray fluorescence and scanning electron microscopy energy-dispersive spectroscopy assessed its elemental composition and microstructural characteristics. The results indicated the inclusion of new crystalline phases (quartz) and changes in mineralogy and crystallinity due to environmental interactions. A diagenetic pathway model is proposed, involving initial development, exposure to calcium carbonate-rich water, hydroxyapatite recrystallization, calcite infiltration in pores, and incorporation of new elements. This study enhances the understanding of fossil preservation and environmental influences on diagenetic processes at a regional level as well as being one of the first works on glyptodont carapace characterizations in South America.
PB Sage
SN 2755-1857
YR 2025
FD 2025-03-20
LK http://hdl.handle.net/20.500.14066/4665
UL http://hdl.handle.net/20.500.14066/4665
LA eng
NO Buzarquis Arias, D. S. M., Herrera, E., Colman, C. F., Sarubbi Jacks, Y., Ríos, S. D., Souberlich, R., Sánchez Gonzales, C. J., & Matos da Silva Costa, A. (2025). Diagenetic processes in the fossilized carapace of Neosclerocalyptus sp. from the Paraguayan Chaco. Applied Spectroscopy Practica, 3(1).https://doi.org/10.1177/27551857251327
NO Corresponding Author: Alex Matos da Silva Costa, Facultad de Ciencias Exactas y Naturales,FACEN–UNA, Campus/UNA, Km 11, C.C. 1039–1804, San Lorenzo, Paraguay. Email: alexmatos@facen.una.py.
NO Consejo Nacional de Ciencia y Tecnología
DS MINDS@UW
RD 03-sep-2026