Distribution of Upper Cretaceous deep water agglutinated foraminifera in sediments of the North Atlantic and its marginal seas (Tab. 1) ...

The stratigraphic and biogeographic distribution of more than 170 species of deep-water agglutinated benthic foraminifers (DWAF) from the North Atlantic and adjacent marginal seas has been compared with paleoenvironmental data (e.g. paleobathymetry, oxygenation of the bottom waters, amount of terrig...

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Bibliographic Details
Main Authors: Kuhnt, Wolfgang, Kaminski, Michael Anthony, Moullade, Michel
Format: Dataset
Language:English
Published: PANGAEA 1989
Subjects:
Online Access:https://dx.doi.org/10.1594/pangaea.667860
https://doi.pangaea.de/10.1594/PANGAEA.667860
Description
Summary:The stratigraphic and biogeographic distribution of more than 170 species of deep-water agglutinated benthic foraminifers (DWAF) from the North Atlantic and adjacent marginal seas has been compared with paleoenvironmental data (e.g. paleobathymetry, oxygenation of the bottom waters, amount of terrigenous input and substrate disturbance). Six general types of assemblages, in which deep water agglutinated taxa occur, are defined from the Turonian to Maastrichtian times:1. High latitude slope assemblages2. Low to mid latitude slope assemblages3. Flysch-type assemblages4. Deep water limestone assemblages (,,Scaglia,,-type)5. Abyssal mixed calcareous-agglutinated assemblages6. Abyssal purely agglutinated assemblagesLatitudinal differences in faunal composition are observed, the most important of which is the lack or extreme paucity of calcareous forms in high latitude assemblages. East-to-west differences appear to be of comparatively minor importance. Most DWAF species occur in all studied regions and are thus ... : Positions for the non-DSDP/ODP sites are a rough estimation, sampling depth is unknown. ...