Author: CÓZAR, PEDRO

Source: Lethaia, Volume 38, Number 1, 1 March 2005 , pp. 59-66(8)

Publisher: Taylor and Francis Ltd

Abstract:

Microfacies analysis of upper Viséan and Pendleian platform limestones from southwestern Spain shows that assemblages of smaller foraminifera contain many allochthonous specimens. A tool to identify allochthonous specimens is taphonomic analysis of destructive processes and post-mortem displacement during the biostratinomic stage. Abrasion, bioerosion and encrustations occur during the biostratinomic stage, and usually lead to the destruction of tests. In contrast to these processes, some hydraulic processes do not lead to the destruction of tests, only to their redistribution. Hydraulic displacements of tests are also produced in the biostratinomic stage through grading, sorting and reorientation. These processes have been usually recognized in macrofossils, and more rarely in microfossils. In the latter group, observations are mostly restricted to the external morphology and thus, taphonomic processes have been rarely documented in thin-sections.

Keywords: Foraminifera; Mississippian; palaeoecology; SW Spain; taphonomy

Document Type: Research article

DOI: http://dx.doi.org/10.1080/00241160510013178

Affiliations: 1: Facultad de Ciencias Geológicas, Departamento de Paleontología, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040, Madrid, Spain, Email: pcozar@geo.ucm.es

Publication date: 2005-03-01

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