Species Composition of the Late Paleocene Diatoms and Silicoflagellates in the Indian Ocean

Mukhina, Valentina

doi:10.2307/1485397

Cited by 11 publications

(10 citation statements)

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“…Hemiaulus incurvus is a diatom widespread in upper Paleocene sediments. It has previously been reported in the upper Paleocene sediments of the Indian Ocean (Mukhina, 1974(Mukhina, , 1976Jousé, 1982) and the South Atlantic Ocean (Gombos, 1977(Gombos, , 1984Fenner, 1991). It is also present in the USSR where it occurs in the upper Paleocene (N. I.…”

Section: Pyxilla Gracilis Zonementioning

confidence: 69%

“…The sections are grouped according to geographic location: (1) middle and high southern latitudes (>35°S); (2) southern low latitudes; (3) northern low latitudes; (4) northern middle and high latitudes (>35°N). References for diatoms studies of the various localities (from south to north): Seymour Island- Harwood (1988);Holes 698A, 699A, 700B, and 702B Fenner (1991); DSDP Site 327A- Gombos (1977), de Prado (1981; Hole 752A-this study; DSDP Site 524- Gombos (1984); DSDP Site 208-de Prado (1981), de Prado andLing (1981), Jousé (1982); Vityaz Core 6744- Mukhina (1974Mukhina ( , 1976; DSDP Site 214- Jousé (1982), Fenner (1991DSDP Site 94-Fenner (1984; DSDP 390A- Gombos (1982), Fenner (1984; DSDP Sites 384 and 398D-Fennçf (1985b);North GermanyBenda (1965); Denmark-Benda(1972), Fenner (1988; USSR- Krotov andSchibkova(1959,1961), Sheshukova-Poretzkaja and , Gieser (1978), Jousé (1979), Strelnikova (1987), etc. ;DSDP Sites 339 and 343-Dzinpridze et al (1978).…”

Section: Resultsmentioning

confidence: 96%

“…They have also been documented in the South Pacific (DSDP Site 208: de Prado, 1981;de Prado and Ling, 1981), in the tropical Indian Ocean (DSDP Site 214: Jousé, 1982;Fenner, 1991;Vityaz Core 6744: Mukhina, 1974, 1976, and in the North Atlantic (DSDP Sites 384 and 398D : Fenner, 1985b).…”

Section: Previous Studies Of Paleocene and Lower Eocene Diatomsmentioning

confidence: 95%

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Paleocene and Eocene Diatom Biostratigraphy and Taxonomy of Eastern Indian Ocean Site 752

Fourtanier¹

1991

Proceedings of the Ocean Drilling Program

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The Paleocene/Eocene boundary was recovered for the first time in diatom-bearing sediments at Broken Ridge, Site 752. Diatom assemblages are documented throughout the 180-m-thick sequence of upper Paleocene to lower Eocene sediments. Age control available from magnetostratigraphy, calcareous nannofossils, and planktonic foraminifers allows calibration of diatom datum levels to absolute time. A partly new/partly revised diatom zonation is proposed for the Paleocene/early Eocene based on the results of Site 752 and consideration of other studies. The diatom zones are defined as follows (from the youngest to the oldest): Pyxilla gracilis Zone (first occurrence of Craspedodiscus undulatus to first occurrence Pyxilla gracilis); Hemiaulus incurvus Zone (first occurrence Pyxilla gracilis to first occurrence Hemiaulus incurvus); Hemiaulus peripterus Zone (first occurrence'Hemiaulus incurvus to first occurrence Hemiaulus peripterus var. peripterus). Three new taxa are described: Anaulus fennerae n. sp., Stictodiscus bipolaris n. sp., and Hemiaulus peripterus var. longispinus n. var.

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Section: Pyxilla Gracilis Zonementioning

confidence: 69%

Section: Resultsmentioning

confidence: 96%

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Paleocene and Eocene Diatom Biostratigraphy and Taxonomy of Eastern Indian Ocean Site 752

Fourtanier¹

1991

Proceedings of the Ocean Drilling Program

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“…3. Hemiaulus incurvus Schibkova (Plate A4.1) Hemiaulus incurvus Krotov and Schibkova (1959); Mukhina (1976), pl. 1, fig.…”

Section: Genus Gladiopsis Gersonde and Harwoodmentioning

confidence: 99%

“…While diatom-bearing land sections are known from this time period (Harwood, 1988;Homann, 1991;Fenner, 1994;Hollis et al, 2017), in particular on the Russian platform (e.g. Jousé, 1949Jousé, , 1955Oreshkina and Aleksandrova, 2007;Aleksandrova et al, 2012;Radionova et al, 2003;Oreshkina and Radionova, 2014), then an epicontinental shallow sea, few diatom-bearing Paleocene sediments have been retrieved or studied from the deep sea (Mukhina, 1976;Gombos Jr., 1977Fenner, 1991Fenner, , 2015Fourtanier, 1991).…”

Section: Introductionmentioning

confidence: 99%

The Paleocene record of marine diatoms in deep-sea sediments

2018

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Abstract. Marine planktonic diatoms, as today's ocean main carbon and silicon exporters, are central to developing an understanding of the interplay between the evolution of marine life and climate change. The diatom fossil record extends as far as the Early Cretaceous, and the late Paleogene to Recent interval is relatively complete and well documented. Their early Paleogene record, when diatoms first expanded substantially in the marine plankton, is hampered by decreased preservation (notably an episode of intense chertification in the early Eocene) as well as by observation bias. In this article, we attempt to correct for the latter by collecting diatom data in various Paleocene samples from legacy Deep Sea Drilling Project and Ocean Drilling Program deep-sea sediment sections. The results show a different picture from what previous analyses concluded, in that the Paleocene deep-sea diatoms seem in fact to have been as diverse and abundant as in the later Eocene, while exhibiting very substantial survivorship of Cretaceous species up until the Eocene.

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Rethinking the chronology of early Paleogene sediments in the western North Atlantic using diatom biostratigraphy

et al. 2020

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Species Composition of the Late Paleocene Diatoms and Silicoflagellates in the Indian Ocean

Cited by 11 publications

References 0 publications

Paleocene and Eocene Diatom Biostratigraphy and Taxonomy of Eastern Indian Ocean Site 752

Paleocene and Eocene Diatom Biostratigraphy and Taxonomy of Eastern Indian Ocean Site 752

The Paleocene record of marine diatoms in deep-sea sediments

Rethinking the chronology of early Paleogene sediments in the western North Atlantic using diatom biostratigraphy

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