Cretaceous Radiolaria in the Eastern South Atlantic, Deep Sea Drilling Project, Leg 40

Foreman, H.P.

doi:10.2973/dsdp.proc.40.122.1978

Cited by 7 publications

(4 citation statements)

References 1 publication

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“…A radiolarian association was observed in sample 85 ( Table 2) and can be referred to a Hauterivian–Aptian time‐interval ( Table 4) because of the co‐occurence of Cryptamphorella conara (UA Zones 21–22) and Mirifusus dianae minor (UA Zones 9–20) ( Baumgartner et al 1995 ). This radiolarian association has many species in common with the assemblages discovered by Aita (1987) in Late Cretaceous deposits of Shikoku, Japan, and by Foreman (1978a, b) and Erbacher (1994) in Cretaceous sediments of the Atlantic Ocean. This assemblage is correlated with similar assemblages studied by Wu (1993) from Southern Tibet and by Zyabrev (1996) from the Kiselyovsky subterrane of the Khabarovsky region.…”

Section: Hauterivian–aptian Assemblagesupporting

confidence: 55%

Jurassic and Early Cretaceous Radiolaria of the Lower Amurian Terrane: Khabarovsk region, far east of Russia

Popova¹,

Baumgartner²,

Filippov

et al. 1999

Island Arc

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New data on biostratigraphy, sedimentology and tectonics of the Russian Far Eastern region (Lower Amurian terrane) are presented. This study shows that sedimentary sequence of the terrane consists of interbedded Radiolaria‐bearing siliceous and volcaniclastic sediments spanning an interval of over 90 million years. It is shown that accumulation of radiolarian deposits on an oceanic plate was associated with alkaline (intraplate) volcanism in the Jurassic, while the plate was drifting, and with some arc volcanism during the Early Cretaceous. The younger siliceous rocks contain volcaniclastic material and indicate that the studied sequence approached the trench in the Early Cretaceous (Hauterivian‐Barremian) and became accreted in the late Albian–early Cenomanian. We describe and illustrate radiolarian species extracted from 21 samples. A taxonomic list of 194 taxa and nine plates of Jurassic–Early Cretaceous Radiolaria are presented.

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Section: Hauterivian–aptian Assemblagesupporting

confidence: 55%

Jurassic and Early Cretaceous Radiolaria of the Lower Amurian Terrane: Khabarovsk region, far east of Russia

Popova¹,

Baumgartner²,

Filippov

et al. 1999

Island Arc

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“…Family DACTYLIOSPHAERIDAE Squinabol, 1904 Genus Dactyliosphaera Squinabol, 1904 Type species: Dactyliosphaera silviae Squinabol, 1904 Dactyliosphaera lepta (Foreman, 1978) Plate 5, Fig. 14 1978.…”

Section: Archaeospongoprunum Cortinaensismentioning

confidence: 99%

“…6 and 7. Occurrence: This species is reported from the Late Albian to Late Cenomanian interval of the UMB (O' Dogherty, 1994 and this study). It is also known from the Albian to Cenomanian of the southern Atlantic (Foreman, 1978), from the Late Albian to Late Cenomanian of the northern Atlantic and from the Middle to Upper Cenomanian of the equatorial Atlantic (Erbacher, 1998;Musavu-Moussavou and Danelian, 2006).…”

Section: Archaeospongoprunum Cortinaensismentioning

confidence: 99%

The Radiolarian biotic response during OAE2. A high-resolution study across the Bonarelli level at Bottaccione (Gubbio, Italy)

Musavu-Moussavou

Danelian

Baudin

et al. 2007

Revue de Micropaléontologie

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“…Recent investigations during the past two decades of midand Late Cretaceous radiolarian species have been given from the southeastern Brazilian margin (Campos Basin: Kotzian & Eilert, 1987), western interior region of North America (Bergstresser, 1983), western Canada (Wall, 1975), California (Foreman, 1968;Pessagno, 1971Pessagno, , 1972Pessagno, a, b, 1973Pessagno, , 1976, 1977) NW African coastal basins (Agadir andTarfaya basins, Morocco: Thurow et ul., 1982;Wolfart, 1982;Kuhnt et ul., 1986;, northern Italy (Euganean Hills: Kuhnt et a/., op.cit. ), Romania (Dumitrica, 1970), western Siberia, U.S.S.R. (Koslova & Gorbovetz, 1966), northern Australia (Surat Basin, Queensland: Haig & Barnbaum, 1978), from DSDP Sites in the Atlantic (Foreman, 1977(Foreman, , 1978aWolfart, 1982), Pacific (Foreman, 197 1,1973(Foreman, 197 1, b, 1975 and Indian Oceans (Foreman, I973a;Moore, 1973;Riedel & Sanfilippo, 1974;Renz, 1974), and from Campanian tropical and subtropical oceans (Empson-Morin, 1984). The systematic study of Cretaceousdiatoms has long been neglected and, elsewhere, very few accounts have appeared in the literature.…”

Section: Previous Studiesmentioning

confidence: 99%

Radiolarians and Diatoms from the mid-Cretaceous Successions of the Sergipe Basin, Northeastern Brazil: palaeoceanographic Assessment

Koutsoukos

Hart²

1990

J. Micropalaeontol.

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Abstract. Radiolarians and diatoms are documented for the first time from the mid-Cretaceous succession of the Sergipe Basin, a passive marginal basin in northeastern Brazil. Prevailing palaeoceanographic conditions are inferred for the episodes of siliceous radiolarian and diatom biomineralization/preservation. Radiolarian faunas are first recorded in the middle to upper Albian, from scattered occurrences, and subsequently throughout most of the Cenomanian-Turonian succession. Spumellarian forms are dominant in all the sections. Nassellarian forms seem to have thrived in relatively deep-water environments, in middle neritic to upper bathyal pelagic biotopes, and have been recovered from upper Albian and uppermost Cenomanian to middle Turonian sediments. Diatom frustules are only recorded from upper Cenomanian and lower Turonian deposits. These seem to have been more abundant in shallower neritic environments. The onset of the radiolarian assemblages in middle-late Albian times (with waning low-oxygen pelagic conditions) is thought to be a response to better developed oceanic circulation patterns and to a water mass saturated in dissolved silica, perhaps generated by deep-sea volcanic processes in the formation of early oceanic crust and the mid-oceanic ridge in the northern South Atlantic. On the other hand, the record of radiolarian and diatom tests throughout the Cenomanian-Turonian succession is commonly associated with dysaerobic to quasi-anaerobic bottom conditions. This is not only in keeping with high epipelagic primary productivity in well-oxygenated surface waters and that the sea water apparently contained a high level of dissolved silica, but also suggests that the bottom and interstitial waters were enriched in carbon dioxide, had a low pH and slightly negative redox-potential (Eh). The overall conditions would have favoured the biomineralization and post-mortem preservation of siliceous organisms increasing, therefore, the radiolaria+diatom/foraminifera ratio in the sediments, which supports the conclusions of several previous authors.

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Cretaceous Radiolaria in the Eastern South Atlantic, Deep Sea Drilling Project, Leg 40

Cited by 7 publications

References 1 publication

Jurassic and Early Cretaceous Radiolaria of the Lower Amurian Terrane: Khabarovsk region, far east of Russia

Jurassic and Early Cretaceous Radiolaria of the Lower Amurian Terrane: Khabarovsk region, far east of Russia

The Radiolarian biotic response during OAE2. A high-resolution study across the Bonarelli level at Bottaccione (Gubbio, Italy)

Radiolarians and Diatoms from the mid-Cretaceous Successions of the Sergipe Basin, Northeastern Brazil: palaeoceanographic Assessment

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