The reconstruction of sea surface temperatures in the Pacific Ocean of 18,000 B.P.

Moore, Theodore C.; Burckle, Lloyd H.; Geitzenauer, Kurt R.; Luz, Boaz; Molina-Cruz, Adolfo; Robertson, James H.; Sachs, Harvey; Sancetta, Constance; Thiede, Jörn; Thompson, Peter R.; Wenkam, Chiye R.

doi:10.1016/0377-8398(80)90012-2

Cited by 157 publications

(57 citation statements)

References 28 publications

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“…In addition, low input of terrigenous material and low productivity contribute to low sedimentation rates, which in the study region are as low as I cm/1 ka [Moore et al, 1980]. Bioturbation of slowly accumulating sediments inevitably blurs climate records, particularly when isotope measurements are made on groups of foraminiferal shells.…”

Section: Introductionmentioning

confidence: 99%

Similar glacial and Holocene deep water circulation inferred from southeast Pacific benthic foraminiferal carbon isotope composition

Matsumoto¹,

Lynch‐Stieglitz²

1999

Paleoceanography

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Section: Introductionmentioning

confidence: 99%

Similar glacial and Holocene deep water circulation inferred from southeast Pacific benthic foraminiferal carbon isotope composition

Matsumoto¹,

Lynch‐Stieglitz²

1999

Paleoceanography

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“…The a1 8O values of carbonate, silica, and phosphate precipitated by both living and fossil marine organisms, such as foraminiferans, radiolarians, coccolithophorids, diatoms, and barnacles, have been used to estimate temperatures of the water in which the organism lived, based on temperature-dependent equilibrations between the oxygens of water and of the biomineralized phase of interest (e.g. McCrea 1950;Mikkelsen et al 1978;Moore et al 1980;Killingley and Newman 1983). These methods assume relatively little variation (N 1 .O%G) in the al80 values of deep-ocean water over geological time-an assumption supported by independent evidence (Ferronsky and Polyakov 1982).…”

mentioning

confidence: 99%

Oxygen isotopic composition of bottom seawater and tunicate cellulose used as indicators of water masses in the northern Bering and Chukchi Seas

Grebmeier

Cooper

DeNiro

1990

Limnology & Oceanography

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Oxygen isotopic composition of bottom seawater and tunicate cellulose were used as short‐term and long‐term indicators, respectively, of water‐mass characteristics in the northern Bering and Chukchi Seas. Oxygen isotopic composition of northeastern Bering Sea waters is influenced by Yukon River inflows of 18O‐depleted continental water mixing with relatively 18O‐enriched waters contributed by the Anadyr Current. Tunicate cellulose sampled under Alaska coastal water is more depleted in 18O than that collected under Bering shelf and Anadyr waters, which reflects the oxygen isotopic composition of these waters. Tunicate cellulose collected under the mixed Bering shelf water displays intermediate δ18O values. Oxygen isotopic analyses of bottom seawater were used to determine the spatial location and influence of continental and coastal‐derived precipitation and of sea‐ice formation on water‐mass structure on the continental shelf of the northern Bering and Chukchi Seas. Results indicate that the oxygen isotopic composition of tunicate cellulose, averaged over multiple seasons, may serve as a long‐term biochemical indicator of water‐mass patterns in ice‐covered polar regions where continuous sampling is impractical.

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“…The Subarctic Boundary lay about 5° south of its present position in the western and central portions of the North Pacific Ocean (Thompson, 1981) and subpolar waters extended down the California coast (Moore et al, 1980). The western and central subarctic were more affected by seasonal ice cover and were similar to the present-day Sea of Okhotsk (Sancetta, 1979).…”

Section: Hydrography and Paleohydrographymentioning

confidence: 92%

“…Coastal upwelling offshore from Oregon was greatly reduced and did not return to presentday conditions until 7000 yr ago (Karlin et al, 1992;Lyle et al, 1992). Summer surface-water temperature was 2°C cooler and winter surface-water temperature was 4°C cooler than present-day temperatures (Moore et al, 1980) in the study region.…”

Section: Hydrography and Paleohydrographymentioning

confidence: 96%

Planktonic Foraminiferal Biostratigraphy and Paleoceanography of Late Quaternary Turbidite Sequences at Holes 856A, 857A, and 857C, Leg 139

Brunner¹

1994

Proceedings of the Ocean Drilling Program, 139 Scientific Results

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Late Quaternary planktonic foraminiferal biostratigraphy and paleoceanography were examined at two sites from the east margin of Middle Valley of the northern Juan de Fuca Ridge. Calcareous microfossils are abundant and well preserved in the upper sequences where thermal and hydrothermal alteration is minimal and where deposition occurred after sites were tectonically raised above the turbidite plain of the axial valley. Approximately 200 samples were examined to determine depositional style and foraminiferal content including a census of planktonic foraminifers. Approximately 60% of the samples contain turbiditic material, so paleontologic interpretations must be made with caution.Ocean Drilling Program (ODP) Holes 856Aand 857 A contain abundant foraminifers above 52 and 85 mbsf, respectively. The fossiliferous sequences are divided into four informal coiling direction zones based on the species Neogloboquadrina pachyderma (Ehrenberg) and numbered from 1 to 4 from top to bottom of the sequences. Coiling direction zones 1 and 3 contain <90% sinistral forms and include the lower part of the present and penultimate interglacial periods and perhaps part of the glacial termination. Coiling direction zones 2 and 4 contain >90% sinistral forms and span most of the last two glacial periods. The bases of coiling direction zones 1 and 3 define two datum levels tentatively dated at 11,000 and 125,000 yr ago, respectively.Cluster analysis identified three assemblages: a subarctic assemblage, a transitional assemblage, and a subarctic dissolution assemblage. The subarctic dissolution assemblage occurs infrequently and sporadically throughout the unaltered glacial intervals in Holes 856A and 857A. In contrast, the dissolution assemblage dominates Hole 856A below 22 mbsf and is related to calcite precipitation driven by hydrothermal processes. The transitional assemblage appears in coiling direction zone 3 and records the close approach of the subpolar boundary to the ODP Leg 139 locale during the penultimate interglacial period. The subpolar boundary remained south of the study site at approximately 48°30'N latitude throughout the late Quaternary.

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The reconstruction of sea surface temperatures in the Pacific Ocean of 18,000 B.P.

Cited by 157 publications

References 28 publications

Similar glacial and Holocene deep water circulation inferred from southeast Pacific benthic foraminiferal carbon isotope composition

Similar glacial and Holocene deep water circulation inferred from southeast Pacific benthic foraminiferal carbon isotope composition

Oxygen isotopic composition of bottom seawater and tunicate cellulose used as indicators of water masses in the northern Bering and Chukchi Seas

Planktonic Foraminiferal Biostratigraphy and Paleoceanography of Late Quaternary Turbidite Sequences at Holes 856A, 857A, and 857C, Leg 139

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