Oligocene to Recent Planktonic Foraminifera and Stratigraphy of the Leg 15 Sites in the Caribbean Sea

Bolli, Hans M.; Silva, I. Premoli

doi:10.2973/dsdp.proc.15.110.1973

Cited by 76 publications

(77 citation statements)

References 2 publications

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“…To refine the paleodating of the first section further, the first appearance of the planktonic foraminifer Bolliela calida calida is determined, found at a depth of 38.45 to 40.11 mbsf in Hole 820A (Chaproniere, pers. comm., 1991) and dated as 140,000 yr (Bolli and Premoli Silva, 1973). This datum, therefore, does not comply with the 275,000-yr datum, as it lies stratigraphically lower and is thought to be younger than the Emiliania huxleyi datum.…”

Section: Age Modelsmentioning

confidence: 90%

The Stable Oxygen Isotope Signal in Shallow-Water, Upper-Slope Sediments off the Great Barrier Reef (Hole 820A)

Peerdeman¹,

Chivas²

1993

Proceedings of the Ocean Drilling Program

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Oxygen-isotope ratio measurements are presented for the planktonic species Globigerinoides ruber collected from shallowwater, upper-slope sediments from Holes 820A and 820B in 280 m of water, on the seaward edge of the Great Barrier Reef. Correlation of the Site 820 isotope curve with deep-sea reference curves of the Pacific Ocean (Core V28-238, Hole 677A, Hole 607A) permits the definition of isotope stages 1 to 19 in the top 145 m of Holes 820A and 820B. However, paleontological data indicate that stages 4 and 7 might be missing and that two hiatuses occur at a depth of 8.05 to 12.1 and 34.55 to 35.8 mbsf. Using deep-sea Hole 677A as a reference for ice-volume variations, we determine the difference in isotopic signature between it and Site 820. We propose that this difference is a regional signal representing a progressive 4°C increase in surface-water temperature at Site 820. The proposed temperature change was initiated at about 400 k.y. and corresponds to a change from high-to-low frequency variations in Pleistocene isotope signals. We postulate that these changes may have catalyzed the growth of the Great Barrier Reef. The shift also coincides with changes in seismic character and some physical and chemical sediment characteristics.

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Section: Age Modelsmentioning

confidence: 90%

The Stable Oxygen Isotope Signal in Shallow-Water, Upper-Slope Sediments off the Great Barrier Reef (Hole 820A)

Peerdeman¹,

Chivas²

1993

Proceedings of the Ocean Drilling Program

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“…The paper on this subject by Rögl (this volume) is a documentation of Pliocene/Pleistocene planktonic foraminiferal evolutionary trends and their application to biostratigraphy, likely to be of use over wide areas within the subtropical/tropical belt. Notable also is the fact that the subdivision of the Quaternary as proposed for the Caribbean by Bolli and Premoli Silva (1973) could be applied to Site 263, and thus become of more than only local significance.…”

Section: Cenozoicmentioning

confidence: 99%

Synthesis of the Leg 27 Biostratigraphy and Paleontology

Bolli¹

1974

Initial Reports of the Deep Sea Drilling Project

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“…Three of the four faunal intervals within the Globorotalia truncatulinoides Zone were first detected by Bolli and Premoli Silva (1973) for the division of the Quaternary deposits in the Caribbean Sea. Their scheme was also used for stratigraphy of the Pleistocene sediments in the Madeira Islands, Cape Verde, Sierra Leone Rises, Columbian and Venezuelan Basins, Mid-Atlantic Ridge slopes, and Timor Trench (Rögl, 1974;Krasheninnikov and Pflaumann, 1977;Krasheninnikov, 1977Krasheninnikov, , 1978Krasheninnikov, , 1979a.…”

Section: Biostratigraphy Of the Quaternary Deposits In The Rio Grandementioning

confidence: 99%

“…Characteristics of the three lower subdivisions mainly correspond to the definitions of the subzones originally described by Bolli and Premoli Silva (1973) and later by other authors (Rögl, 1974;Krasheninnikov and Pflaumann, 1977;Krasheninnikov, 1977Krasheninnikov, , 1979a. Comparison of their thicknesses, however, shows different age restrictions between the Hole 516 and 518 subzones, the subzones detected by Bolli and Premoli Silva (1973), and those of other authors. A general subdivision of the Quaternary, nevertheless, is possible and gives evidence of similar, though not simultaneous, faunal changes in various regions of the world ocean.…”

Section: Hole 516mentioning

confidence: 99%

“…Their scheme was also used for stratigraphy of the Pleistocene sediments in the Madeira Islands, Cape Verde, Sierra Leone Rises, Columbian and Venezuelan Basins, Mid-Atlantic Ridge slopes, and Timor Trench (Rögl, 1974;Krasheninnikov and Pflaumann, 1977;Krasheninnikov, 1977Krasheninnikov, , 1978Krasheninnikov, , 1979a. Using the names of the subzones proposed by Bolli and Premoli Silva (1973), we have modified their faunal definitions; the stratigraphic ranges, therefore, are different. Nevertheless, the possibility of their identification testifies to similar, though not simultaneous, changes in the composition of the planktonic foraminiferal fauna in various oceanic regions.…”

Section: Biostratigraphy Of the Quaternary Deposits In The Rio Grandementioning

confidence: 99%

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Quaternary Biostratigraphy and Surface Paleotemperatures Based on Planktonic Foraminifers

Barash¹,

Os'kina²,

Bylum³

1983

Initial Reports of the Deep Sea Drilling Project, 72

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Quantitative analysis was performed on the Quaternary planktonic foraminiferal fauna from Site 516, near the crest of the Rio Grande Rise, and Site 518, on the lower western flank of the Rise. From Hole 516, 46 samples were taken, and from Hole 518, 80 samples were taken. The mean interval between samples is 20 to 25 cm. About 50 species of Quaternary and Pliocene planktonic foraminifers were identified. Quaternary sediments, dated by the initial evolutionary appearance of Globorotalia truncatulinoides and other criteria, have thickness, of 9.8 m in Hole 516 and 16 m in Hole 518.The Globorotalia truncatulinoides Zone is subdivided into four subzones or biostratigraphic horizons (from lower to upper): (1) Globorotalia crassaformis viola, (2) Globorotalia crassaformis hessi, (3) Globigerina calida calida, and (4) Globigerinoides ruber (pink). Thickness of these horizons in Hole 516 establishes the age of the boundaries between them as 1.47, 0.81, and 0.28 Ma, respectively.All the Quaternary planktonic foraminiferal complexes sampled are subtropical. The region of the Rio Grande Rise, therefore, has been within the southern subtropical gyre continuously for the last 2 Ma.The average annual surface water temperatures were reconstructed for the Quaternary at both sites. A micropaleontologic method for the paleotemperature analysis of the thanatocoenosis registers an average Quaternary temperature of 21.2°C at Site 516 and 21.7°C at Site 518. The temperature fluctuations increase up to 3.5°C during the accumulation of the two last horizons (since 0.81 Ma). Temperature peaks are tentatively compared with oxygen isotopic stages and with continental glaciations. Levels at which planktonic foraminiferal species disappear correspond to coldwater intervals.In the Quaternary of Site 518, some layers show signs of dissolution. Corrosive to CaCO 3 , the northward flow of Antarctic Bottom Water through the Vema Channel increases during the cold periods. Site 518 has two layers of redeposited foraminiferal sand with Pliocene foraminifers. The average rate of the Quaternary sedimentation in Hole 516 is 0.52 cm per thousand years, and in Hole 518 it is 0.84 cm per thousand years.

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Oligocene to Recent Planktonic Foraminifera and Stratigraphy of the Leg 15 Sites in the Caribbean Sea

Cited by 76 publications

References 2 publications

The Stable Oxygen Isotope Signal in Shallow-Water, Upper-Slope Sediments off the Great Barrier Reef (Hole 820A)

The Stable Oxygen Isotope Signal in Shallow-Water, Upper-Slope Sediments off the Great Barrier Reef (Hole 820A)

Synthesis of the Leg 27 Biostratigraphy and Paleontology

Quaternary Biostratigraphy and Surface Paleotemperatures Based on Planktonic Foraminifers

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