Stable isotopic indication for the cyst formation depth of Campanian/Maastrichtian calcareous dinoflagellates

δ18O and δ13C values for the calcareous dinoflagellate species Orthopithonella? globosa ($F\ddot utterer$1984) Lentin and Williams 1985 and Pirumella krasheninnikovii (Bolli 1974) Lentin and Williams 1993 from latest Campanian and earliest Maastrichtian of ODP Hole 690C (Weddell Sea, Antarctic Ocean...

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Published in:Micropaleontology 2003-12, Vol.49 (4), p.375-380
Main Authors: Friedrich, Oliver, Meier, K. J. Sebastian
Format: Article
Language:English
Subjects:
C-13/C-12
Campanian
carbon
Carbon isotopes
Cretaceous
Cysts
depth
Dinoflagellata
Drilling
Foraminifera
geochemical indicators
geochemistry
isotope ratios
Isotopes
Leg 113
lower Maestrichtian
Maestrichtian
Mesozoic
microfossils
Micropaleontology
morphology
O-18/O-16
Ocean Drilling Program
Oceans
ODP Site 690
Orthopithonella
Oxygen
Oxygen isotopes
paleo-oceanography
paleoecology
palynomorphs
photochemistry
photosynthesis
Seas
Senonian
Southern Ocean
stable isotopes
Stratigraphy
Taxa
upper Campanian
Upper Cretaceous
Weddell Sea
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description δ18O and δ13C values for the calcareous dinoflagellate species Orthopithonella? globosa ($F\ddot utterer$1984) Lentin and Williams 1985 and Pirumella krasheninnikovii (Bolli 1974) Lentin and Williams 1993 from latest Campanian and earliest Maastrichtian of ODP Hole 690C (Weddell Sea, Antarctic Ocean) have been studied in order to evaluate the species' depth habitat in the water column and their applicability in paleoceanographic studies. The calcareous dinoflagellates show isotopic values comparable to probably shallow-dwelling planktic foraminifera from the same samples in δ18O, but have an offset of about$-5\textperthousand$to$-7\textperthousand$in δ13C. This suggests that calcareous dinoflagellate oxygen isotopes may provide information for paleoceanographic reconstructions of sea-surface water temperatures, whereas their extremely light carbon isotope values are probably due to photosynthetic processes.
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source JSTOR
subjects C-13/C-12
Campanian
carbon
Carbon isotopes
Cretaceous
Cysts
depth
Dinoflagellata
Drilling
Foraminifera
geochemical indicators
geochemistry
isotope ratios
Isotopes
Leg 113
lower Maestrichtian
Maestrichtian
Mesozoic
microfossils
Micropaleontology
morphology
O-18/O-16
Ocean Drilling Program
Oceans
ODP Site 690
Orthopithonella
Oxygen
Oxygen isotopes
paleo-oceanography
paleoecology
palynomorphs
photochemistry
photosynthesis
Seas
Senonian
Southern Ocean
stable isotopes
Stratigraphy
Taxa
upper Campanian
Upper Cretaceous
Weddell Sea
title Stable isotopic indication for the cyst formation depth of Campanian/Maastrichtian calcareous dinoflagellates
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