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- W2016762975 abstract "Other| January 01, 2001 Taphonomic implications of foraminiferal composition and abundance in intertidal mud flats, Colorado River delta (Mexico) Roberto Barbieri Roberto Barbieri University of Bologna, Dipartimento di Scienze della Terra e Geologico-Ambientali, Bologna, Italy Search for other works by this author on: GSW Google Scholar Micropaleontology (2001) 47 (1): 73–86. https://doi.org/10.2113/47.1.73 Article history first online: 03 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Roberto Barbieri; Taphonomic implications of foraminiferal composition and abundance in intertidal mud flats, Colorado River delta (Mexico). Micropaleontology 2001;; 47 (1): 73–86. doi: https://doi.org/10.2113/47.1.73 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyMicropaleontology Search Advanced Search Abstract The tidal mud flats of the Colorado River delta are located at the head of the Gulf of California. This region is characterized by exceptionally high nutrient concentrations which are able to sustain a high primary productivity. This study documents the taxonomic composition of foraminiferal assemblages of this area and their preservation potential from the intertidal zone of the southwesternmost part of the delta plain, in surface and subsurface (down to 20 cm deep) sediments sampled north of San Felipe. Thirty-three species belonging to seventeen genera have been recognized: calcareous perforate taxa make up most of the assemblage, whereas imperforate taxa (Miliolina) are less frequent and agglutinated taxa are virtually absent. Only a small number of specimens, belonging to offshore species, were likely conveyed to the delta during storms. In general, the foraminiferal surface density seems largely controlled by burrowers and deposit feeder activity, alkalinity, degree of dissolution, and the type of sediment. Counts of total foraminifera show that subsurface samples have higher densities-by one order of magnitude-than those registered in surface samples. In the study area, which is characterized by low to absent sedimentation, rapid sediment reworking may alter surface/subsurface faunal ratios and buried specimens may repeatedly be reworked to the surface in the taphonomically active zone. This is a possible explanation for the distribution of dissolution, which is higher in subsurface than surface assemblages and which exhibits no relationship to the age of specimens. This content is PDF only. Please click on the PDF icon to access. You do not have access to this content, please speak to your institutional administrator if you feel you should have access." @default.
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- W2016762975 title "Taphonomic implications of foraminiferal composition and abundance in intertidal mud flats, Colorado River delta (Mexico)" @default.
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