Mineralogía y geoquímica del esqueleto de los mastodontes de los yacimientos Batallones 1, 2 y 5. Implicaciones tafonómicas
DOI:
https://doi.org/10.3989/egeol.066216Keywords:
Diagenetic process, francolite, crystallinity, mastodons, BatallonesAbstract
Mastodont fossil remains (ribs, enamels and dentines) from the Upper Miocene Batallones localities (Bat-1, 2 and 5) are analyzed petrographically and geochemically to identify their diagenetic history. The X-ray difraction confirms that the original hidroxiapatite has been replaced for francolite, except in the enamel samples that have not shown any change. Calcite is the more common authigenic mineral that fills the porous bones. During the fossilization process there was an increment in crystalinity, a loss in proportion of the major-elements (P, Al, Cl, and K) and an enrichment in the trace-elements (except Ni, Cu, and Zn). Principal Component Analysis of the element composition of all studies samples reveals that the fossil bones of the different Batallones localities have a similar composition, probably these localities share a similar diagenetic history.
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