Benthic Foraminiferal Faunas and Trophic Regimes at the Terminal Cretaceous Tethyan Seafloor

Widmark, Joen G.V.; Speijer, Robert P.

doi:10.2307/3515335

Cited by 49 publications

(19 citation statements)

References 42 publications

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“…We calculated the percentage of buliminid taxa for all the studied sections; a high relative abundance of buliminid taxa has been related to high productivity and a year-round or seasonally fluctuating high delivery of food to the sea floor (e.g., Widmark and Speijer, 1997;Fontanier et al, 2002). Furthermore, the percentage of agglutinated foraminifers was calculated for all the studied sections.…”

Section: Methods Of Analysismentioning

confidence: 99%

“…ODP Site 1049 was a re-drill of Deep Sea Drilling Project (DSDP) Site 390, for which a paleodepth of 600-1600 m was derived from benthic foraminiferal assemblages in the site chapter (Benson and Sheridan, 1978), 1000-1200 m by Widmark and Speijer (1997). According to Alegret and Thomas (2004), deposition occurred at lower bathyal depths (1500-1600 m), whereas the spherule-bed contains elements reworked and transported from shallow areas.…”

Section: Odp Hole 1049c Blake Nose (Northwestern Atlantic)mentioning

confidence: 99%

“…7). The high percentages of buliminids and other infaunal morphogroups and the low percentage of species typical for a low food supply (e.g., C. hyphalus, N. truempyi and G. globosus) suggest that Site 1049 was located in an upwelling area with high productivity and seasonally fluctuating high food supply to the sea floor (e.g., Widmark and Speijer, 1997;Alegret and Thomas, 2004).…”

Section: Comparison Of Paleoenvironmental Turnover Across the K/pg Bomentioning

confidence: 99%

See 2 more Smart Citations

Cretaceous/Paleogene boundary bathyal paleo-environments in the central North Pacific (DSDP Site 465), the Northwestern Atlantic (ODP Site 1049), the Gulf of Mexico and the Tethys: The benthic foraminiferal record

Alegret

Thomas

2005

Palaeogeography, Palaeoclimatology, Palaeoecology

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Section: Methods Of Analysismentioning

confidence: 99%

Section: Odp Hole 1049c Blake Nose (Northwestern Atlantic)mentioning

confidence: 99%

Section: Comparison Of Paleoenvironmental Turnover Across the K/pg Bomentioning

confidence: 99%

See 1 more Smart Citation

Cretaceous/Paleogene boundary bathyal paleo-environments in the central North Pacific (DSDP Site 465), the Northwestern Atlantic (ODP Site 1049), the Gulf of Mexico and the Tethys: The benthic foraminiferal record

Alegret

Thomas

2005

Palaeogeography, Palaeoclimatology, Palaeoecology

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“…The Maastrichtian-Paleocene bathyal and abyssal benthic foraminiferal faunas were globally rather uniform although relative abundances varied geographically (e.g., Widmark and Speijer, 1997), and had such common constituent species as Stensioeina beccariiformis, Pullenia coryelli, Alabamina creta, Clavulinoides paleocenica, Clavulinoides havanensis, Gyroidinoides globosus, Paralabamina hillebrandti and Paralabamina lunata.…”

Section: Introductionmentioning

confidence: 99%

Extinction and food at the seafloor: A high-resolution benthic foraminiferal record across the initial Eocene thermal maximum, Southern Ocean site 690

Thomas¹

2003

Causes and Consequences of Globally Warm Climates in the Early Paleogene

135

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“… 1 Widmark and Malmgren (1992); 2 Speijer and Schmitz (1998); 3 Speijer and Wagner (2002); 4 Widmark and Speijer (1997); 5 Peryt et al. (1997); 6 Galeotti et al.…”

Section: Methodsmentioning

confidence: 99%

Palaeoenvironmental turnover across the Palaeocene/Eocene boundary at the Stratotype section in Dababiya (Egypt) based on benthic foraminifera

et al. 2005

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The Global Stratotype Section and Point for the Palaeocene/Eocene (P/E) boundary was defined at Dababiya Quarry (Egypt) at the base of the carbon isotope excursion (CIE). We present the first detailed analysis of Palaeocene–Eocene benthic foraminifera from Dababiya, in order to infer the palaeoenvironmental turnover across the P/E boundary. At Dababiya, the CIE coincides with a major turnover in foraminiferal assemblages; the last occurrence of Angulogavelinella avnimelechi, at the base of the CIE, may be correlated to the main phase of extinction of deep‐sea benthic foraminifera. Benthic foraminifera indicate that stressful conditions such as oxygen deficiency, carbonate dissolution, and changes in food supply, persisted at the sea floor over most of the CIE interval. The main phase of recovery of benthic foraminifera is recorded c. 250 cm above the P/E boundary, and it may be linked to increased productivity and oxygenation at the sea floor.

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Benthic Foraminiferal Faunas and Trophic Regimes at the Terminal Cretaceous Tethyan Seafloor

Cited by 49 publications

References 42 publications

Cretaceous/Paleogene boundary bathyal paleo-environments in the central North Pacific (DSDP Site 465), the Northwestern Atlantic (ODP Site 1049), the Gulf of Mexico and the Tethys: The benthic foraminiferal record

Cretaceous/Paleogene boundary bathyal paleo-environments in the central North Pacific (DSDP Site 465), the Northwestern Atlantic (ODP Site 1049), the Gulf of Mexico and the Tethys: The benthic foraminiferal record

Extinction and food at the seafloor: A high-resolution benthic foraminiferal record across the initial Eocene thermal maximum, Southern Ocean site 690

Palaeoenvironmental turnover across the Palaeocene/Eocene boundary at the Stratotype section in Dababiya (Egypt) based on benthic foraminifera

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