Calcareous nannofossil biostratigraphy and revised zonation of the Pleistocene

Gartner, Stefan

doi:10.1016/0377-8398(77)90002-0

Cited by 300 publications

(301 citation statements)

References 20 publications

Supporting

Mentioning

290

Contrasting

Unclassified

Order By: Relevance

“…Emiliania huxleyi appeared in the late Pleistocene becoming a major component of the coccolith assemblages from the base of the E. huxleyi Acme Zone, quantitatively defined and dated at 85 ka by Rio et al (1990), replacing Gephyrocapsa (Gartner, 1977;Thierstein et al, 1977;Rio et al, 1990;Raffi et al, 1993;Young, 1998). The dominance of E. huxleyi in the upper photic zone nannoflora of the Holocene and latest late Pleistocene is well documented both globally (e.g.…”

Section: Holocene -Latest Late Pleistocene Reticulofenestridsmentioning

confidence: 99%

Abnormal carbonate diagenesis in Holocene–late Pleistocene sapropel-associated sediments from the Eastern Mediterranean; evidence from Emiliania huxleyi coccolith morphology

Crudeli

Young

Erba

et al. 2004

Marine Micropaleontology

View full text Add to dashboard Cite

In studying the Holocene -late Pleistocene record of the Eastern Mediterranean, considerable Emiliania huxleyi size/shape variation not clearly assignable to primary or secondary calcification was observed. Accordingly, different morphotypes were distinguished by light microscope (LM).A subsequent scanning electron microscope (SEM) analysis of selected samples has indicated that Emiliania huxleyi coccoliths are variably affected by carbonate diagenesis in these sediments. A series of diagenetic stages were qualitatively defined, comprising well-preserved specimens, three overgrowth (OG1 to OG3) and one etching (E1) stage. Comparing SEM and LM observations, a tentative correlation between the E. huxleyi calcified LM-morphotypes and E. huxleyi SEM-overgrowth stages is proposed here.Our study not only indicates that Emiliania huxleyi coccoliths are strongly influenced by carbonate diagenesis, but also that they show effects of carbonate precipitation and dissolution much more clearly than other coccoliths. The relative abundances of the different LM-morphotypes were used to define an E. huxleyi overgrowth index (EXO) that qualitatively estimates carbonate precipitation/dissolution on coccoliths in this sediment. This resulted in definition of five ''Diagenetic'' intervals (D1 to D5). Deposition of sapropel S1 was a time of good preservation with variable dissolution and no overgrowth of E. huxleyi coccoliths, whereas calcite overgrowth was high during the Last Glacial Maximum (LGM) and interglacial period and, to a lesser extent, during the Younger Dryas and through the last 5 ka. D

show abstract

Section: Holocene -Latest Late Pleistocene Reticulofenestridsmentioning

confidence: 99%

Abnormal carbonate diagenesis in Holocene–late Pleistocene sapropel-associated sediments from the Eastern Mediterranean; evidence from Emiliania huxleyi coccolith morphology

Crudeli

Young

Erba

et al. 2004

Marine Micropaleontology

View full text Add to dashboard Cite

show abstract

“…Identification of nannofossil zones follows Perch-Nielsen (1981) for the Maastrichtian, Okada and Bukry (1980) for the Paleogene and Neogene, Gartner (1977) for the uppermost Pliocene and Pleistocene.…”

Section: Calcareous Nannofossilsmentioning

confidence: 99%

“…For what concerns the Gephyrocapsa group, a simplified taxonomy was applied for the identification of its different species. On the basis of the classifications adopted by Gartner (1977), Raffi and Rio (1979), Rio (1982), and Rio et al (1990), among others, Gephyrocapsa spp. have been subdivided as follows: (1) G. oceanica s.l.…”

Section: Calcareous Nannofossilsmentioning

confidence: 99%

See 1 more Smart Citation

Calcareous Nannofossil and Planktonic Foraminifer Biostratigraphy of Hole 810C (Shatsky Rise, Northwestern Pacific)

Silva¹,

Castradori²,

Spezzaferri³

1993

Proceedings of the Ocean Drilling Program

View full text Add to dashboard Cite

The 136 m of calcareous oozes recovered in Hole 810C span the interval from upper Maastrichtian to middle Pleistocene. Three major hiatuses interrupt the sequence, with the topmost part of the Maastrichtian through the entire lower Paleocene, most of the lower Eocene, and the entire middle Eocene through most of the middle Miocene missing. Severe reworking and displacement affected the lower part of the succession from the Maastrichtian through the middle Miocene. Reworking and displacement gradually decreased in the upper portion. Calcareous nannofossil biostratigraphy enabled us to calibrate precisely the nearly complete magnetic reversal sequence of the Pliocene to the late Pleistocene. Two minor hiatuses detected by calcareous nannofossils across the Pliocene/Pleistocene boundary and in the upper lower Pleistocene, respectively, resulted in shortening of the Olduvai and Jaramillo Events within the Matuyama Chron of the magnetic reversal sequence.

show abstract

“…A in the Mariana core (KH82-4 st. 21) documented by Matsuoka and Okada (1989). Gartner's (1977) zonal scheme documented abundance peaks of small Gephyrocapsa in the middle Quaternary and named the interval "small Gephyrocapsa Zone." This zone is characterized by an abundance of small Gephyrocapsa with high-angle bridges (>60°) and small size (1.7-2.0 µm).…”

Section: Abundance Patterns Of Small Gephyrocapsamentioning

confidence: 99%

Morphometric Changes of the Genus Gephyrocapsa at Site 790, Subtropical Pacific Ocean

Matsuoka¹,

Fujioka²

1992

Proceedings of the Ocean Drilling Program

View full text Add to dashboard Cite

Cyclic changes in the morphometry of large specimens of the calcareous nannofossil genus Gephyrocapsa, first discovered in the Indian Ocean, are recognized in the middle Quaternary sedimentary sequence of Site 790 drilled in the Izu-Bonin forearc. The second and a part of the third cycle of morphometric development of large Gephyrocapsa were identified at this site. Small Gephyrocapsa (in particular, Gephyrocapsa protohuxleyi var. A and Gephyrocapsa ornata var. A) generally compose approximately 50% of the middle Quaternary nannoflora. Four abundance peaks of the small Gephyrocapsa complex were seen in this middle Quaternary sequence, three of which were not seen in previously studied Indian Ocean or Mariana Arc cores.

show abstract

Calcareous nannofossil biostratigraphy and revised zonation of the Pleistocene

Cited by 300 publications

References 20 publications

Abnormal carbonate diagenesis in Holocene–late Pleistocene sapropel-associated sediments from the Eastern Mediterranean; evidence from Emiliania huxleyi coccolith morphology

Abnormal carbonate diagenesis in Holocene–late Pleistocene sapropel-associated sediments from the Eastern Mediterranean; evidence from Emiliania huxleyi coccolith morphology

Calcareous Nannofossil and Planktonic Foraminifer Biostratigraphy of Hole 810C (Shatsky Rise, Northwestern Pacific)

Morphometric Changes of the Genus Gephyrocapsa at Site 790, Subtropical Pacific Ocean

Contact Info

Product

Resources

About