Publication Date:
2024-01-09
Description:
We describe seven Paleocene to lowermost Eocene sequences in core holes at Island Beach, Bass River, Ancora, Millville, and Sea Girt, NJ (Ocean Drilling Program Leg 150X, 174AX) and analyze benthic foraminiferal assemblages to assess paleodepth changes within sequences. These sequences are referred to as Pa0, Pa1a, Pa1b, Pa2a, Pa2b, Pa3a, and Pa3b. Paleocene sequence boundaries are identified by unconformities and variations in benthic foraminiferal biofacies. We used Q-mode factor analysis and paleoslope modeling to identify three distinct middle-outer neritic benthic foraminiferal assemblages and their associated water depths. Paleodepths during the early Paleocene and deposition of Pa0, Pa1a, and Pa2b were ~80 m with ~20 m changes across sequence boundaries. A long-term shallowing occurred through the late Paleocene where paleodepths were ~50-70 m in Pa3a. This trend drastically changes in the earliest Eocene where the paleodepths of sequence Pa3b were ~120-150 m. New Jersey Paleocene sequence boundaries correlate with those in other regions and with d18O increases in the deep sea, suggesting Paleocene eustatic lowerings were associated with ice-growth events.
Keywords:
Alabamina wilcoxensis; Allomorphina paleocenica; Ancora; Angulogerina cuneata; Angulogerina wilcoxensis; Anomalinoides acuta; Anomalinoides midwayensis; Anomalinoides welleri; Bass_River_Site; Bolivina midwayensis; BR; Bulimina aspero-aculeata; Bulimina cacumenata; Bulimina hornerstownensis; Bulimina kugleri; Bulimina midwayensis; Bulimina ovata; Bulimina paleocenica; Bulimina quadrata; Bulimina sp.; Bullopora sp.; CDRILL; Chrysalogonium arkansanum; Cibicides howelli; Cibicidoides alleni; Cibicidoides incognita; Cibicidoides sp.; Cibicidoides succedens; Core drilling; Cornuspira sp.; Counting 〉105 µm fraction; Dentalina aculeata; Dentalina alabamensis; Dentalina colei; Dentalina eocenica; Dentalina insulsa; Dentalina nasuta; Dentalina paleocenica; Dentalina plummerae; Dentalina pseudoaculeata; Dentalina pseudo-obliquestriata; Dentalina sp.; Dentalina wilcoxensis; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Ellipsonodosaria arkansasanum; Ellipsonodosaria midwayensis; Ellipsonodosaria paleocenica; Ellipsonodosaria plummerae; Elphidiella prima; Entosolenia sp.; Epistominoides wilcoxensis; Eponides elevatus; Eponides plummerae; Event label; Foraminifera, benthic; Foraminifera, benthic indeterminata; Gaudryina pyramidata; Gavelinella danica; Gavelinella lellingensis; Glandulina sp.; Globulina gibba; Guttulina sp.; Gyroidinoides octocameratus; Gyroidinoides subangulatus; Lagena laevis; Lagena sp.; Lagena sulcata; Lamarckina sp.; Leg174AX; Lenticulina discus; Lenticulina jenningsi; Lenticulina orbicularis; Lenticulina rotulata; Lenticulina semicostata; Lenticulina sp.; Lenticulina turbinata; Loxostomoides applinae; Loxostomum sp.; Marginulina sp.; Marginulinopsis tuberculata; Millville; New Jersey; Nodosarella attenuata; Nodosarella paleocenica; Nodosaria affinis; Nodosaria cf. amphioxys; Nodosaria cf. longiscata; Nodosaria granti; Nodosaria longiscata; Nodosaria macneili; Nodosaria plummerae; Nodosaria sp.; Nonionella soldadoensis; Nonionella sp.; Nonion sp.; North American East Coast; Ocean Drilling Program; ODP; Osangularia plummerae; Palmula robusta; Planularia toddae; Pleurostomella alternans; Pleurostomella paleocenica; Polymorphinella cf. elongata; Pseudoglandulina sp.; Pullenia quinqueloba; Pulsiphonina prima; Quadrimorphina allomorphinoides; Ramulina spp.; Saracenaria trigonata; Sigmomorphina sp.; Spiroplectammina mexiaensis; Spiroplectammina plummerae; Spiroplectammina rossae; Stensioeina cf. beccariiformis parvula; Stilostomella midwayensis; Stilostomella paleocenica; Stilostomella plummerae; Stilostomella sp.; Tappanina selmensis; Trifarina herberti; Turrilina brevispira; Turrilina sp.; Uvigerina sp.; Vaginulina sp.
Type:
Dataset
Format:
text/tab-separated-values, 6719 data points
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