Pliocene benthic foraminiferal abundances of ODP Hole 105-646B from north Atlantic ...

• Main Authors: Zhang, Jijun, Scott, David B
• Format: Dataset
• Language: English
• Published: PANGAEA 1996
• Subjects: Sample code/label; DEPTH, sediment/rock; Foraminifera, benthic; Foraminifera, benthic calcareous; Fragmentation index, planktic foraminifera; Lenticulina spp.; Nonion spp.; Nonionella spp.; Astrononion echolsi; Astrononion umbilicatulum; Elphidium sp.; Pullenia bulloides; Pullenia quinqueloba; Melonis barleeanus; Melonis pompilioides; Florilus sp.; Sphaeroidina bulloides; Oridorsalis umbonatus; Planulina rugosa; Planulina wuellerstorfi; Cibicides lobatulus; Cibicidoides bradyi; Cibicidoides spp.; Rosalina sp.; Gyroidina soldanii; Gavelinopsis praegeri; Laticarinina pauperata; Valvulineria laevigata; Nuttallides umbonifera; Hoeglundina elegans; Epistominella exigua; Eponides polius; Eponides tumidulus; Eponides weddellensis; Eponides sp.; Discorbinella bertheloti; Globocassidulina subglobosa; Cassidulina laevigata; Cassidulina reniforme; Cassidulina sp.; Cassidulinoides tenuis; Foraminifera, benthic indeterminata; Uvigerina peregrina; Uvigerina proboscidea; Uvigerina sp.; Rectuvigerina spp.; Trifarina angulosa; Ehrenbergina trigona; Bulimina alazanensis; Bulimina tessellata; Rugosa; North Atlantic
• Online Access: https://dx.doi.org/10.1594/pangaea.758101; https://doi.pangaea.de/10.1594/PANGAEA.758101

Our benthic foraminiferal data clearly indicate eight layers of deep-water turbidites during the Messinian (MTL 1-8) and one in the early Pliocene (PTL 1) in Ocean Drilling Program Leg 105, Site 646B. These deep-water tuibidite deposits are characterized by highly concentrated agglutinated marsh benthic foraminifera (e.g., Trochammina cf. squamata, Ammotium sp. A, Miliammina fusca), rounded quartz, polished thick-walled benthic foraminifera, wood fragments, plant seeds, plant fruit, and highly concentrated mica and are interbedded with sediments containing deep-water benthic faunas. We suggest these turbidites deposited during sea-level low stands (approx. 80-100 m below sea level), and their ages are tentatively correlated to 6.59, 6.22, 6.01, 5.89, 5.75, 5.7, 5.65, 5.60, and 5.55 Ma, respectively, based on the Messinian oxygen isotope enrichments at Site 552A of Deep Sea Drilling Project Leg 81. The turbidites layers during the late Messinian, coeval with frequent climate changes suggested by six oxygen ... : Supplement to: Zhang, Jijun; Scott, David B (1996): Messinian deep-water turbidites and glacioeustatic sea-level changes in the North Atlantic: Linkage to the Mediterranean salinity crisis. Paleoceanography, 11(3), 277-297 ...