Planktonic Foraminifera from Leg 37 of the Deep Sea Drilling Project

Miles, G.A.

doi:10.2973/dsdp.proc.37.176.1977

Cited by 6 publications

(7 citation statements)

References 7 publications

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“…Our interpretation of the biostratigraphic po¬ sition of Yorktown sediments at Lee Creek is consistent with that of Akers (1972) for the York¬ town at Rice's Pit, Virginia. It is also similar to that of Gibson (p. 363,herein Blow, 1969;Poag, 1972;Miles, 1977;Berggren, 1978). We find no faunal evidence for an age as young as zone N21.…”

Section: Methodssupporting

confidence: 72%

Geology and paleontology of the Lee Creek mine, North Carolina, III

Ray¹,

Bohaska²

2001

Smithsonian Contributions to Paleobiology

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SERIES PUBLICATIONS OF THE SMITHSONIAN INSTITUTIONEmphasis upon publication as a means of "diffusing knowledge" was expressed by the first Secretary of the Smithsonian. In his formal plan for the Institution, Joseph Henry outlined a program that included the following statement: "It is proposed to publish a series of reports, giving an account of the new discoveries in science, and of the changes made from year to year in all branches of knowledge." This theme of basic research has been adhered to through the years by thousands of titles issued in series publications under the Smithsonian imprint, commencing with Smithsonian Contributions to Knowledge in 1848 and continuing with the following active series:

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Section: Methodssupporting

confidence: 72%

Geology and paleontology of the Lee Creek mine, North Carolina, III

Ray¹,

Bohaska²

2001

Smithsonian Contributions to Paleobiology

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“…2) suggests that its geographic range extends south to include DSDP Site 334, at 37°N. It was not recorded, however, by Miles (1977) in his account of this site, and it does not occur at Site 607 (41 °N). The two sites with the most common occurrences of this species are Site 608, at 43°N, and Site 410 (Poore, 1979), at 45°N.…”

Section: Sites 606 and 607mentioning

confidence: 99%

Magnetobiostratigraphy of Planktonic Foraminiferal Datums: Deep Sea Drilling Project Leg 94, North Atlantic

Weaver¹,

Clement²

1987

Initial Reports of the Deep Sea Drilling Project

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The six Leg 94 sites have produced a unique data set from a north-south transect of sites, all with good paleomagnetic records, and all but one with above-average accumulation rates. We show that it is necessary to have high accumulation rates to obtain good quality magnetobiostratigraphies, and that it is difficult to correlate geological sequences over distances of several hundred kilometers without independent age control. Using the paleomagnetically derived ages for species ranges, we show several examples of diachronic first and last appearance datums between the core sites. This has enabled us to test the existing zonal schemes for the Pliocene-Pleistocene and to identify new zonal markers.

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“…We observe that the LO of G. dehiscens is a diachronous event from the north to the south Atlantic Ocean. The taxon is virtually absent in the upper Miocene of the Legs 37 and 94 sites near the Azores Islands (Miles, 1977;Weaver and Clement, 1987). At Site 397, (Cape Bojador, North Atlantic, Salvatorini and Cita, 1979), it ranges to Blow's Zone N16 and is very sporadic in the latest Miocene.…”

Section: Diachronous Datum Levelsmentioning

confidence: 97%

Neogene and Quaternary planktonic foraminiferal biostratigraphy of the Canary Island region

Maniscalco¹,

Brunner²

1998

Proceedings of the Ocean Drilling Program, 157 Scientific Results

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We examined planktonic foraminifers from Sites 953 and 954 in the Canary Island region. Site 953 is stratigraphically the best site with a complete Quaternary to middle Miocene sequence of pelagic and volcaniclastic sediments deposited in the sedimentary basin north of Gran Canaria. At Site 954, on the island flank, several distinct unconformities disrupt the sequence, complicating the biostratigraphy. We adopted the zonation of Berggren (1973, 1977) and Berggren et al. (1983, 1995b) and recognized several of Berggren's zones, although some difficulties arose because of the absence of many zonal markers from the area and the diachronism of several species. Additionally, preservation is poor in the Miocene, hindering zonal assignment by reducing or eliminating the more solution-susceptible species. We placed the Pliocene/Pleistocene boundary above the last occurrence of Globigerinoides obliquus extremus Bolli and Bermudez following the suggestion of Berggren et al. (1995b), because Globigerinoides fistulosus, whose last occurrence defines the base of Zone PT1, does not occur in our samples. We did not use the first occurrence of Globorotalia truncatulinoides (d'Orbigny) because it is diachronous in the Atlantic Ocean. We consider the highest occurrence of the planktonic foraminifer Globorotalia juanai Bermudez and Bolli a useful datum marker to define the Miocene/Pliocene boundary in the Canary Island region, where the last occurrence of Globoquadrina dehiscens (Chapman, Parr, and Collins), recorded within upper Chron C5n at Sites 953 and 954, and the first occurrence of Globorotalia tumida (Brady), which is rare and sporadic, are not useful for this purpose.

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Planktonic Foraminifera from Leg 37 of the Deep Sea Drilling Project

Cited by 6 publications

References 7 publications

Geology and paleontology of the Lee Creek mine, North Carolina, III

Geology and paleontology of the Lee Creek mine, North Carolina, III

Magnetobiostratigraphy of Planktonic Foraminiferal Datums: Deep Sea Drilling Project Leg 94, North Atlantic

Neogene and Quaternary planktonic foraminiferal biostratigraphy of the Canary Island region

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