(Figure 2) Foraminifera in lower to middle Albian sediments of DSDP Hole 80-549

The Early Cretaceous series of Site 549 have been analyzed from both an ecological and a chronostratigraphical viewpoint. Lithology and microfaunal assemblages allow the division of these deposits into two parts. The lower part extends from the lower Barremian to the basal upper Barremian and possib...

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Bibliographic Details
Main Authors: Magniez, Francoise, Sigal, Jacques
Format: Dataset
Language:English
Published: PANGAEA 1985
Subjects:
80-549
Anomalina rodriguezi
Astacolus spp.
Bulimina sp.
Cibicides reicheli
Cibicides spp.
Citharina gr. recta
Conorotalites sp.
Cyclogyra spp.
Deep Sea Drilling Project
Discorbis cf. minutissima
DRILL
Drilling/drill rig
DSDP
DSDP/ODP/IODP sample designation
Eponides chalilovi
Falsogaudryinella sp.
Gaudryina cf. compacta
Gaudryina dividens
Gavelinella intermedia
Globigerinelloides cf. ferreolensis
Globigerinelloides cf. gottisi
Globigerinelloides sp.
Glomar Challenger
Glomospira charoides
Glomospirella gaultina
Gubkinella graysonensis
Gyroidina sp.
Gyroidina spp.
Gyroidinoides infracretacea
Hedbergella cf. angolae
Hedbergella cf. gorbachikae
Hedbergella cf. infracretacea
Hedbergella cf. rischi
Hedbergella globigerinelloides
Hedbergella planispira
Hedbergella sp.
Hedbergella spp.
Hippocrepina depressa
Hyperammina gaultina
Kalamopsis grzybowskii
Leg80
Lenticulina spp.
Lingulina cf. lamellata
Marginulina spp.
Marssonella spp.
Nodosarella sp.
Nodosaria cf. prismatica
North Atlantic/SPUR
Number
Recta
North Atlantic
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.809057
https://doi.org/10.1594/PANGAEA.809057
Description
Summary:The Early Cretaceous series of Site 549 have been analyzed from both an ecological and a chronostratigraphical viewpoint. Lithology and microfaunal assemblages allow the division of these deposits into two parts. The lower part extends from the lower Barremian to the basal upper Barremian and possibly down into the upper Hauterivian. Three foraminiferal associations suggest an orderly evolution from a low-energy, littoral environment, in which continental influences dominated, to progressively more open marine conditions. A dolosparite bed (which has not yet been dated) separates these synrift deposits from lower to basal middle Albian postrift sediments that developed in a pelagic bathyal environment on the middle to nearby lower continental slope.

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