(Table 1) Planktonic foraminiferal abundance at DSDP Site 94-606 ...

A "total fauna" curve (Ruddiman, 1971; doi:10.1130/0016-7606(1971)82[283:PSITEA]2.0.CO;2) shows that surface water overlying DSDP Site 606 (central North Atlantic Ocean) cooled suddenly at 3.1 Ma, within the Mammoth paleomagnetic reversed interval. At that time, Globorotalia puncticulata,...

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Bibliographic Details
Main Authors: Ehrmann, Lisa M, Keigwin, Lloyd D
Format: Dataset
Language:English
Published: PANGAEA 1987
Subjects:
DEPTH, sediment/rock
Fragmentation index, planktic foraminifera
Foraminifera, benthic/planktic ratio
Globigerina woodi
Globigerina bulloides
Globorotalia puncticulata
Neogloboquadrina acostaensis
Globorotalia scitula
Neogloboquadrina pachyderma
Globigerina falconensis
Globorotalia hirsuta
Globigerinoides cf. ruber
Globigerinoides obliquus
Globigerinoides sacculifer
Globorotalia menardii
Sphaeroidinellopsis spp.
Globoquadrina altispira
Orbulina sp.
Globorotalia crassaformis
Globigerinella aequilateralis
Globigerinita glutinata
Foraminifera, planktic indeterminata
Foraminifera, planktic
Composite Core
Counting >180 µm fraction
Leg94
Glomar Challenger
Deep Sea Drilling Project DSDP
Kidd
North Atlantic
Online Access:https://dx.doi.org/10.1594/pangaea.788610
https://doi.pangaea.de/10.1594/PANGAEA.788610
Description
Summary:A "total fauna" curve (Ruddiman, 1971; doi:10.1130/0016-7606(1971)82[283:PSITEA]2.0.CO;2) shows that surface water overlying DSDP Site 606 (central North Atlantic Ocean) cooled suddenly at 3.1 Ma, within the Mammoth paleomagnetic reversed interval. At that time, Globorotalia puncticulata, Neogloboquadrina pachyderma, and Globorotalia crassaformis increased and Globorotalia hirsuta, Globigerinoides sacculifer, and Sphaeroidinellopsis decreased in abundance. Oxygen isotope results for Globigerina bulloides do not indicate a "stepwise" cooling, but probably reflect small changes in continental ice volume. It is hypothesized that as annual average temperatures decreased, G. bulloides delayed its bloom from spring to summer to follow a preferred temperature habitat. ... : Supplement to: Ehrmann, Lisa M; Keigwin, Lloyd D (1987): Middle Pliocene change in planktonic foraminiferal fauna at Site 606. In: Ruddiman, WF; Kidd, RB; Thomas, E; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 94, 921-924 ...

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