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

• Main Authors: Kuhnt, Wolfgang, Kaminski, Michael Anthony, Moullade, Michel
• Format: Dataset
• Language: English
• Published: PANGAEA 1989
• Subjects: 103-641A; 14-137; 14-141; 41-367; 41-368; 78-543A; 93-603B; Ammobaculites agglutinans; Ammobaculites aubertae; Ammobaculites jarvisi; Ammobaculites sp.; Ammodiscus asperellus; Ammodiscus cf. pennyi; Ammodiscus cretaceus; Ammodiscus glabratus; Ammodiscus infimus; Ammodiscus pennyi; Ammodiscus peruvianus; Ammodiscus planus; Ammodiscus sp.; Ammolagena clavata; Ammosphaeroidina pseudopauciloculata; Arenobulimina dorbignyi; Aschemonella carpathica; Aschemonella ex. gr. A. grandis; Bathysiphon spp.; Bolivinopsis parvissimus; Budashevaella trinitatensis; Clavulinoides aspera; Clavulinoides eggeri; Clavulinoides subparisiensis; Cork Harbour; Cribrostomoides sp.; Cribrostomoides trinitatensis; Deep Sea Drilling Project; Dendrophyra ex. gr. D. exceisa; Dendrophyra latissima; Depth; bottom/max; sediment/rock; top/min; Dorothia crassa trochoides; Dorothia oxycona; Dorothia retusa; Dorothia sp.; DRILL; Drilling/drill rig; DSDP; North Atlantic
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.667860; https://doi.org/10.1594/PANGAEA.667860

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 assemblages 2. Low to mid latitude slope assemblages 3. Flysch-type assemblages 4. Deep water limestone assemblages (,,Scaglia,,-type) 5. Abyssal mixed calcareous-agglutinated assemblages 6. Abyssal purely agglutinated assemblages Latitudinal 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 considered as cosmopolitan. Biostratigraphic turnovers in the taxonomic content of assemblages are observed in the lowermost Turonian, mid-Campanian and in the upper Maastrichtian to lowermost Paleocene. These datum levels correspond to inter-regional and time-constant paleooceanographic events, which probably also affected the deep-water benthic biota. This allows us to use deep-water agglutinated foraminifers for biostratigraphy in the North Atlantic sequences deposited below CCD and to geographically extend the currently used zonal schemes which have been established in the Carpathian and Alpine areas.