Taphonomic traits of Holocene plant fragments from the Camocim municipality coastal zone, Ceará, Brazil
DOI:
https://doi.org/10.11606/issn.2316-9095.v20-154601Keywords:
Eolianites, Taphonomy, Calcium carbonate, Coastal vegetation, HoloceneAbstract
Located on Ceará’s coastline, the Municipality of Camocim is characterized by lowlands and pre-coastal plateaus with large swaths of mobile dunes, in addition to stretches with eolianites, which may contain preserved plant remains. This research aimed to define the taphonomic processes that preserved these plant macrorests. Fieldwork consisted of direct observation of an outcrop, diagenized eolian sediments, and the mineralized plants contained therein, verifying their arrangement and types of organic remains. Sediments were observed and described in the field and, later, in the laboratory, using a stereomicroscope to examine its granulometry, type of cement, and lithification. The mineralized plants macrorests compose an autochthonous/parautochthonous assemblage of horizontal and/or vertical tubes in situ, inside or around the outcrop, surrounded by smaller specimens showing fragmentation and deformation features, preserved by calcification and incrustation. The presence of these ancient plant remains/debris in life position contributes to the understanding of the region’s past sedimentary dynamics, allowing data cross-referencing with the current processes.
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