Radiocarbon measurements and loose-sediment quantification of seafloor sediment samples off northern Mauritania, supplement to: Michel, Julien; Mateu-Vicens, G; Westphal, Hildegard (2011): Modern heterozoan carbonates from a eutrophic tropical shelf (Mauritania). Journal of Sedimentary Research, 81(9-10), 641–655


Heterozoan carbonates are typical for extratropical sedimentary systems. However, under mesotrophic to eutrophic conditions, heterozoan carbonates also form in tropical settings. Nevertheless, such heterozoan tropical sedimentary systems are rare in the modern world and therefore are only poorly understood to date. Here a carbonate depositional system is presented where nutrient-rich upwelling waters push onto a wide shelf. These waters warm up in the shelf, giving rise to the production and deposition of tropical heterozoan facies. The carbonate facies on this shelf are characterized by a mixture of tropical and cosmopolitan biogenic sedimentary grains. Study of facies and taxonomy are the key for identifying and characterizing tropical heterozoan carbonates and for distinguishing them from their coolwater counterparts, in particular in the past where the oceanography cannot be determined directly.

Related Identifier
Metadata Access
Creator Michel, Julien; Mateu-Vicens, G; Westphal, Hildegard
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2010
Rights Creative Commons Attribution 3.0 Unported
OpenAccess true
Language English
Resource Type Supplementary Collection of Datasets
Format application/zip
Size 2 datasets
Discipline Earth System Research
Spatial Coverage (-17.683W, 19.725S, -16.953E, 20.815N); off Mauritania
Temporal Coverage Begin 2006-12-30T21:43:00Z
Temporal Coverage End 2008-05-12T14:26:00Z