Quantifying Detection Limits and Uncertainty in X-ray Diffraction Mineralogical Assessments of Biogenic Carbonates
Microbial Biofacies and the Influence of Metazoans in Holocene Deposits of the Lagoa Salgada, Rio De Janeiro State, Brazil
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COVER EXPLANATION.—Shell of the gastropod mollusk Heleobia australis, which is found in great abundance among the matrix of modern microbialites from Lagoa Salgada, Rio de Janeiro, Brazil. This bioclast represents high bioturbation and predation of microrganisms that composed the stromatolytic system, illustrating the influence of metazoans on the development of microbialites. See Ricardi-Branco et al., this issue.
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