Preliminary Dinoflagellate Biostratigraphy for the Middle Eocene to Lower Oligocene from the Southwest Atlantic Ocean

Goodman, David K.; Ford, Leonard N.

doi:10.2973/dsdp.proc.71.131.1983

Cited by 39 publications

(74 citation statements)

References 8 publications

(12 reference statements)

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“…In addition, several species occur (e.g., Histiocysta sp. of Goodman and Ford, 1983 and Elytrocysta sp. of Goodman and Ford, 1983) that previously were re ported only from the Norwegian-Greenland Sea, offshore east ern U.S., southwestern Atlantic, and Australasia.…”

Section: Discussionmentioning

confidence: 99%

“…of Goodman and Ford, 1983 and Elytrocysta sp. of Goodman and Ford, 1983) that previously were re ported only from the Norwegian-Greenland Sea, offshore east ern U.S., southwestern Atlantic, and Australasia. That these species are common at Site 647 and apparently absent from the eastern North Atlantic may suggest an affinity between the south western North Atlantic and Site 647 that is not shared with the eastern North Atlantic.…”

Section: Discussionmentioning

confidence: 99%

“…of Good man and Ford (1983) and Elytrocysta sp. of Goodman and Ford (1983) have a continued common presence in the lower Oligo cene (up to Sample 105-647A-24R-2, 142-145 cm), perhaps also suggesting affinities with the Norwegian-Greenland Sea. In ad dition, a number of previously undescribed species (e.g., Dino cyst sp.…”

Section: Dinoflagellatesmentioning

confidence: 92%

“…Middle to upper Eocene dinocyst assemblages from Site 647 are similar to those from the eastern North Atlantic and northwestern Europe, but the common presence of Histiocysta sp. of Goodman and Ford (1983) and Elytrocysta sp. of Good man and Ford (1983) in many samples also suggests some affin ity with assemblages recorded from the Norwegian-Greenland Sea, offshore eastern U.S.A., southwestern Atlantic, and New Zealand.…”

Section: Dinoflagellatesmentioning

confidence: 99%

“…Oligocene di noflagellate biostratigraphy thus presently offers lower resolu tion than for the Eocene. Useful Oligocene dinoflagellate publi cations (in addition to some of those listed above) include the following: Benedek (1972Benedek ( , 1980; Benedek and Sarjeant (1981); Sarjeant (1983Sarjeant ( , 1984; Biffi and Grignani (1983); Goodman and Ford (1983); Liengjarern et al (1980);Powell (1986aPowell ( , 1986b; Stover (1977); Edwards (1986);and Biffi and Manum (1988).…”

Section: Other Paleogene Palynological Studiesmentioning

confidence: 99%

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Palynology and Dinocyst Stratigraphy of the Eocene and Oligocene in ODP Leg 105, Hole 647A, Labrador Sea

Head¹,

Norris²

1989

Proceedings of the Ocean Drilling Program

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Dinoflagellate cysts were recovered throughout the Paleogene succession of Hole 647A, which contains an almost complete deep-water record of early Eocene through early late Oligocene sedimentation in the Labrador Sea. Dinofla gellate cyst biostratigraphy is in general accord with that provided by other microfossil groups and is consistent with a lower Eocene age, as determined by nannofossils, for basal sediments in Hole 647A. These sediments overlie oceanic crust of Chron 24 age.Dinocyst assemblages indicate outer neritic to oceanic conditions throughout, although the persistent occurrence of Wetzeliellaceae specimens in the lower Eocene suggests a greater influence from shelf environments during this time. Lower Eocene dinocyst assemblages are similar to coeval assemblages from the Rockall Plateau, but those from the middle to upper Eocene have mixed affinities and may be related to the intensification of the proto-Gulf Stream from middle Eocene time. Oligocene dinocyst assemblages suggest the influence of both arctic and North Atlantic water masses at this site. The presence of protoperidineacean species in the upper Eocene and Oligocene may indicate in creased availability of nutrients, perhaps related to increased upwelling or the effects of water-mass mixing.Productive samples are dominated by dinocysts and acritarchs, while sporomorphs are represented mainly by bisaccate pollen. Preservational differences within samples may reflect mixing of penecontemporaneous dinocyst popula tions during the Eocene, and all samples examined may have a considerable allochthonous component. Variability in relative abundance of many species during the Eocene may be related to fluctuating water-mass properties.A total 175 dinocyst and acritarch taxa were recorded from 53 productive samples from the Paleogene. Only one Pa leogene sample was barren of palynomorphs. Of three Miocene samples processed, all were barren.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Dinoflagellatesmentioning

confidence: 92%

Section: Dinoflagellatesmentioning

confidence: 99%

Section: Other Paleogene Palynological Studiesmentioning

confidence: 99%

See 3 more Smart Citations

Palynology and Dinocyst Stratigraphy of the Eocene and Oligocene in ODP Leg 105, Hole 647A, Labrador Sea

Head¹,

Norris²

1989

Proceedings of the Ocean Drilling Program

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Late Eocene-Oligocene Dinoflagellate Provincialism in the North Atlantic Ocean

Damassa¹,

Williams

1994

Cenozoic Plants and Climates of the Arctic

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Diverse Eocene-Oligocene dinoflagellate assemblages occur in about four hundred and forty samples from twenty-three North Atlantic Deep Sea Drilling Project (DSDP) sites. The most complete sections are in the Priabonian, Rupelian and Chattian intervals, represented by samples from eleven coreholes on which the present study is based. Localities were grouped into five geographic regions: southwest North Atlantic (DSDP 540, 612; Alabama core); Newfoundland Basin (DSDP 112); Norwegian-Greenland Basin (DSDP 338, 345); Rockall Plateau-Porcupine Trough (DSDP 116, 117, 406, 549A); and offshore northwest Africa (DSDP 369A, 547A).Using this spatial and temporal framework, we have related species occurrences to paleoclimatic and paleooceanographic models for the Paleogene. The distribution of species occurring in the Priabonian appears to be influenced by both paleocurrents and paleolatitude. The existence of the proto-North Atlantic Current is supported by the relatively high percentage of species (20 %) which occur in all regions except the Newfoundland Basin, which was located north of the presumed path of the current. Priabonian species diversity decreases from low to high latitudes. The Rupelian has the highest percentage of species (64 % of the total assemblage) restricted to low latitudes. Middle-and high-latitude assemblages are notably less diverse, indicating a southward migration of taxa during this time; this is interpreted as. a response to the cooling event which took place across the Eocene-Oligocene boundary. In the Chattian, there is an increase in the number of cosmopolitan taxa, and the lowest species diversity occurs in the middle latitudes.

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WITHDRAWN: Antiophidian properties of a dolastane diterpene isolated from the marine brown alga Canistrocarpus cervicornis

Moura

Sanchez

Bianco

et al. 2010

Biomedicine & Pharmacotherapy

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Preliminary Dinoflagellate Biostratigraphy for the Middle Eocene to Lower Oligocene from the Southwest Atlantic Ocean

Cited by 39 publications

References 8 publications

Palynology and Dinocyst Stratigraphy of the Eocene and Oligocene in ODP Leg 105, Hole 647A, Labrador Sea

Palynology and Dinocyst Stratigraphy of the Eocene and Oligocene in ODP Leg 105, Hole 647A, Labrador Sea

Late Eocene-Oligocene Dinoflagellate Provincialism in the North Atlantic Ocean

WITHDRAWN: Antiophidian properties of a dolastane diterpene isolated from the marine brown alga Canistrocarpus cervicornis

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