Middle Eocene dinocysts from Bruce Bank (Scotia Sea, Antarctica) and their paleoenvironmental and paleogeographic implications

Mao, Shaozhi; Mohr, Barbara A. R.

doi:10.1016/0034-6667(94)00138-a

Cited by 47 publications

(29 citation statements)

References 31 publications

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“…This contrasts markedly the situation in the older Paleogene, where many studies have reported rich dinocyst associations around Antarctica (e.g., Goodman and Ford, 1983;Wilson, 1985Wilson, , 1988Wrenn and Hart, 1988;Mohr, 1990;Mao and Mohr, 1995;Crouch and Hollis, 1996;Truswell, 1997;Hannah, 1997aHannah, , 1997bHannah and Raine, 1997, Brinkhuis et al, this volume; Sluijs et al, this volume, for overviews). Only recently a first ever quasi-continuous Southern Ocean Oligocene-early Miocene dinocyst succession was documented from the Ross Sea continental shelf (Cape Roberts Project, see Hannah et al, 2000, and discussion in Brinkhuis et al, this volume).…”

Section: Dinoflagellate Cysts: Generalmentioning

confidence: 78%

Late Eocene–Quaternary Dinoflagellate Cysts from ODP Site 1168, off Western Tasmania

Brinkhuis¹,

Munsterman²,

Sengers³

et al. 2003

Proceedings of the Ocean Drilling Program, 189 Scientific Results

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Palynomorphs were studied in samples from Ocean Drilling Program (ODP) Leg 189, Hole 1168A (slope of the western margin of Tasmania; 2463 m water depth). Besides organic-walled dinoflagellate cysts (dinocysts), broad categories of other palynomorphs were quantified in terms of relative abundance. In this contribution, we provide an overview of the early late Eocene-Quaternary dinocyst distribution and illustrate main trends in palynomorph distribution.Dinocyst species throughout Hole 1168A are largely cosmopolitan with important contributions of typical low-latitude taxa and virtual absence of endemic Antarctic taxa. Dinocyst stratigraphic distribution broadly matches that known from the Northern Hemisphere and equatorial regions, although significant differences are noted. Selected potentially biochronostratigraphically useful events are summarized. The distribution of dinocysts in the middle-upper Miocene interval is rather patchy, probably due to prolonged exposure to oxygen. An important general aspect in the dinocyst assemblages is the near absence of Antarctic endemic species and the apparent influence of relatively warm waters throughout the succession at Site 1168. General palynomorph distribution indicates continued deepening from an initial shallow, even restricted, marine setting from late Eocene-Quaternary times. A curious massive influx of small skolochorate acritarchs is recorded throughout the late early-early middle Miocene; the significance of this

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Section: Dinoflagellate Cysts: Generalmentioning

confidence: 78%

Late Eocene–Quaternary Dinoflagellate Cysts from ODP Site 1168, off Western Tasmania

Brinkhuis¹,

Munsterman²,

Sengers³

et al. 2003

Proceedings of the Ocean Drilling Program, 189 Scientific Results

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“…Scotia Sea (Mao and Mohr, 1995), and southern Argentinian successions (e.g., Guerstein et al, 2002) Cookson and Eisenack, 1965;Stover, 1975), to New Zealand (e.g., Clowes, 1985;Edbrooke et al, 1998), and to DSDP sites in the southernmost Atlantic (Goodman and Ford, 1983;Mohr, 1990). The early late Eocene dinocyst species composition at Sites 1170-1172 forms a continuation of the middle Eocene pattern.…”

Section: A Sluijs Et Al Eocene-oligocene Dinoflagellate Cystsmentioning

confidence: 96%

“…Besides the Tasman region (e.g., Haskell and Wilson, 1975;Crouch and Hollis, 1996;Truswell, 1997) this Antarctic-endemic association 1 has also been found in the Eocene of McMurdo Sound (e.g., Hannah and Raine, 1997), the Ross Sea (Wrenn et al, 1998;Hannah et al, 2000), Seymour Island/Weddell Sea (e.g., Wrenn and Hart, 1988;Mohr, 1990), Bruce Bank/Scotia Sea (Mao and Mohr, 1995), Falkland Plateau (Goodman and Ford, 1983), Prydz Bay/Mac. Robertson Shelf (E.M. Truswell, pers.…”

Section: A Sluijs Et Al Eocene-oligocene Dinoflagellate Cysts 14mentioning

confidence: 97%

“…A comparison between the recorded late Eocene-early Oligocene dinocyst events and literature data suggest that the following dinocyst events are potentially meaningful for recognizing and globally correlating upper Eocene strata and the E/O boundary (see overviews in, e.g., Wrenn and Hart, 1988;Wilson, 1988;Brinkhuis and Biffi, 1993;Brinkhuis and Visscher, 1995;Mao and Mohr, 1995;Wilpshaar et al, 1996;Truswell, 1997;Hannah and Raine, 1997;Jaramillio and ObohIkunenobe, 1999; Williams et al, this volume):…”

Section: Global Dinocyst Biostratigraphic Considerationsmentioning

confidence: 98%

“…1983; Mao and Mohr, 1995;Firth, 1996). In this association, typically Vozzhenikovia and Spinidinium (S. macmurdoense) spp.…”

Section: A Sluijs Et Al Eocene-oligocene Dinoflagellate Cysts 14mentioning

confidence: 99%

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Dinoflagellate Cysts from the Eocene–Oligocene Transition in the Southern Ocean: Results from ODP Leg 189

Sluijs¹,

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Scotia Sea Region

Eagles¹

2021

Encyclopedia of Geology

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Middle Eocene dinocysts from Bruce Bank (Scotia Sea, Antarctica) and their paleoenvironmental and paleogeographic implications

Cited by 47 publications

References 31 publications

Late Eocene–Quaternary Dinoflagellate Cysts from ODP Site 1168, off Western Tasmania

Late Eocene–Quaternary Dinoflagellate Cysts from ODP Site 1168, off Western Tasmania

Dinoflagellate Cysts from the Eocene–Oligocene Transition in the Southern Ocean: Results from ODP Leg 189

Scotia Sea Region

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