Upper Eocene to Oligocene isotope (87Sr/86Sr, δ18O, δ13C) standard section, Deep Sea Drilling Project Site 522

Paleoceanography - Tập 3 Số 2 - Trang 223-233 - 1988
Kenneth G. Miller1, Mark D. Feigenson2, Dennis V. Kent1, Richard K. Olsson3
1LAMONT-DOHERTY GEOLOGICAL OBSERVATORY OF COLUMBIA UNIVERSITY, PALISADES, NEW YORK
2School of Arts and Sciences, Earth & Planetary Sciences
3Department of Geological Sciences Rutgers University, New Brunswick, New Jersey

Tóm tắt

We improved upper Eocene to Oligocene deep‐sea chronostratigraphic control by integrating isotope (87Sr/86Sr, δ18O, δ13C) stratigraphy and magnetostratigraphy. Most previous attempts to establish the timing of isotope fluctuations have relied upon biostratigraphic age estimates which have uncertainties of 0.5 to over 4.0 m.y. Deep Sea Drilling Project (DSDP) Site 522 contains the best available upper Eocene to Oligocene magnetostratigraphic record which allows first‐order correlations of isotope records (87Sr/86Sr, δ18O, δ13C) to the Geomagnetic Polarity Time Scale (GPTS). Empirical calibrations between the 87Sr/86Sr of foraminifera and magnetochronology at Site 522 allow more precise correlation of “unknown” samples with the GPTS. For example, shallow water and high‐latitude sections may be tied into the deep‐sea record. Sr‐isotope stratigraphic resolution for the latest Eocene to Oligocene is approximately 2 m.y.

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Tài liệu tham khảo

Barker P. R., 1983, Initial Rep. Deep Sea Drill. Pro., 72, 1024

Berggren W. A., 1983, Neogene magnetobiostratigraphy of Deep Sea Drilling Project Site 516 (Rio Grande Rise, South Atlantic), Initial Rep. Deep Sea Drill. Proj., 72, 675

Berggren W. A., 1983, Magnetobiostratigraphy of Deep Sea Drilling Project Leg 72, Sites 515–518, Rio Grande Rise (South Atlantic), Initial Rep. Deep Sea Drill. Proj., 72, 939

10.1144/GSL.MEM.1985.010.01.15

10.1016/0016-7037(82)90110-7

Broecker W. S., 1982, Tracers in the Sea

10.1130/0091-7613(1982)10<516:VOSSTP>2.0.CO;2

10.1029/GD015p0101

10.1126/science.226.4676.806

10.1130/0091-7613(1986)14<103:DROTNS>2.0.CO;2

10.1126/science.227.4689.938

10.1016/0031-0182(86)90007-6

Fairbanks R. G., 1978, The marine oxygen isotopic record in Pleistocene coral, Barbados, 10, 181

10.1016/0377-8398(81)90018-9

10.1016/0016-7037(74)90163-X

10.1126/science.231.4741.979

Hsu K., 1984, Initial Rep. Deep Sea Drill. Proj., 73, 798

Hodell D. A., 1988, Strontium isotope stratigraphy and geochemistry of the Late Neogene ocean (9 to 2 Ma), Earth Planet. Sci. Lett.

10.1130/0016-7606(1986)97<335:SIILME>2.0.CO;2

10.1130/0091-7613(1984)12<16:MOCFEP>2.0.CO;2

10.1038/260513a0

10.1130/0016-7606(1982)93<414:PMSIUP>2.0.CO;2

10.1029/PA001i003p00273

10.1029/GM032p0469

Miller K. G., 1985, Late Eocene to Oligocène benthic foraminiferal isotopic record, Site 574 equatorial Pacific, Initial Rep. Deep Sea Drill. Proj., 85, 771

10.1130/0091-7613(1985)13<257:OBMAIS>2.0.CO;2

10.1130/0091-7613(1985)13<10:OGAEOT>2.0.CO;2

Miller K. G., 1985, Late Paleogene benthic foraminiferal paleoceanography of the Goban Spur Region, DSDP Leg 80, Initial Rep. Deep Sea Drill. Proj., 80, 505

10.1029/PA002i001p00001

Oberhansli H., 1985, South Atlantic Paleoceanography, 125

Oberhansli H., 1984, A paleoclimatic and paleoceanographic record of the Paleogene in the central South Atlantic (Leg 73, Sites 522, 523, and 524), Initial Rep. Deep Sea Drill. Proj., 523, 737

Poag C. W., 1985, Foraminiferal, lithic, and isotopic changes across four major unconformifies at Deep Sea Drilling Project Site 548, Goban Spur, Initial Rep. Deep Sea Drill. Proj., 80, 539

Poore R. Z., 1984, Middle Eocene through Quaternary planktonic, foraminifers from the southern Angola Basin: Deep Sea Drilling Project Leg 73, Initial Rep. Deep Sea Drill. Proj., 73, 429

Poore R. Z., 1984, Middle Eocene through Quaternary planktonic foraminifers from the southern Angola Basin: Deep Sea Drilling Project Leg 73, Initial Rep. Deep Sea Drill. Proj., 73, 429

Poore R. Z., 1984, Late Eocene‐Oligocene oxygen and carbon isotope record from South Atlantic Ocean DSDP Site 522, Initial Rep. Deep Sea Drill. Proj., 73, 725

Pujol C., 1983, Cenozoic planktonic foraminiferal biostratigraphy of the southwestern Atlantic (Rio Grande Rise): Deep Sea Drilling Project Leg 72, Initial Rep. Deep Sea Drill. Proj., 72, 623

10.1130/0016-7606(1975)86<1499:TMP>2.0.CO;2

Shackleton N. J., 1975, Paleotemperature history of the Cenozoic and initiation of Antarctic glaciation: Oxygen and carbon isotopic analyses in DSDP Sites 277, 279, and 281, Initial Rep. Deep Sea Drill. Proj., 29, 743

10.1016/0033-5894(73)90052-5

10.1016/0031-0182(83)90039-1

Tauxe L., 1984, Magnetostratigraphy of Leg 73 sediments, Initial Rep. Deep Sea Drill. Proj., 73, 609

Feigenson M. D., Department of Geological Sciences

D. V. Kent K. G. Miller Lamont‐Doherty Geological Observatory of Columbia University Palisades N.Y. 10964.