Caribbean carbonate crash in Pedro Channel at subthermoclinal depth during Marine Isotope Stage 11: A case of basin-to-shelf carbonate fractionation?

Zeigler, Kate E.; Schwartz, Jackie; Droxler, A. W.; Shearer, Michelle C.; Peterson, Larry C.

doi:10.1029/137gm13

Cited by 8 publications

(11 citation statements)

References 56 publications

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“…Zeigler et al, 2003), atmospheric CO 2 concentrations were broadly similar to the Holocene (Siegenthaler et al, 2005). In agreement with this, the vertical δ 13 C gradient between GeoB1720-2 (near to Site-1085 at 1995 m depth) and Site-1089 has an almost identical magnitude of change over termination 1 as during termination 5, and similar interglacial values (Fig.…”

Section: 42supporting

confidence: 69%

Mid-depth South Atlantic Ocean circulation and chemical stratification during MIS-10 to 12: implications for atmospheric CO<sub>2</sub>

2008

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Abstract. A detailed record of benthic foraminifera carbon isotopes from the intermediate-depth South East Atlantic margin shows little glacial-interglacial variability between MIS-12 to MIS-10, suggesting that Northern Atlantic deepwaters consistently penetrated to at least 30° S. Millennial-scale increases in either the mass or flux of northern-sourced deepwaters over the core site occurred alongside reductions in Lower North Atlantic Deep Water recorded in North Atlantic sediment cores and show that the lower and intermediate limb of the Atlantic deepwater convective cell oscillated in anti-phase during previous glacial periods. In addition, a 500 yr resolution record of the Cape Basin intermediate-deep δ13C gradient shows that a reduction in deep Southern Ocean ventilation at the end of MIS-11 was consistent with a modelled CO2 drawdown of ~21–30 ppm. Further increases in the Southern Ocean chemical divide during the transition into MIS-10 were completed before minimum CO2 levels were reached, suggesting that other mechanisms such as alkalinity changes were responsible for the remaining ~45 ppm drawdown.

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Section: 42supporting

confidence: 69%

Mid-depth South Atlantic Ocean circulation and chemical stratification during MIS-10 to 12: implications for atmospheric CO<sub>2</sub>

2008

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“…Lea et al, 2002). Many clever attempts have been made to convert δ 18 O to its sea-level equivalent by Chappell (1974), Shackleton and Chappell (1986), Shackleton (1987), Waelbroeck et al (2002), McManus et al (2003), and Zeigler et al (2003) believed that ocean core SITE 849 from the NE Pacific may provide a close approximation for sea-levels of the last 0.5 Ma (Mix et al, 1995). More recently, correlations have been made between oxygen isotope, temperature and carbon dioxide variability in Antarctic ice cores with sealevel (Rohling et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Sea level ~400 000 years ago (MIS 11): analogue for present and future sea-level?

Bowen

2010

Clim. Past

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Abstract. Comparison of the sea-level today with that of 400 000 years ago (MIS 11), when the Earth's orbital characteristics were similar may provide, under conditions of natural variability, indications of future sea-level during the present interglacial. Then, as now, orbital eccentricity was low and precession dampened. Evidence for MIS 11 sealevel occurs on uplifting coastlines where shorelines with geochronological ages have been preserved. The sea-level term and the uplift term may be separated with an "uplift correction" formula. This discovers the original sea-level at which the now uplifted shoreline was fashioned. Estimates are based on average uplift rates of the "last interglacial" sealevel (MIS 5.5) using a range of estimates for sea-level and age at that time at different locations. These, with varying secular tectonic regimes in different ocean basins, provide a band of estimates for the MIS 11 sea-level. They do not support the hypothesis of an MIS 11 sea-level at ∼20 m, and instead show that it was closer to its present level.

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Section: Introductionmentioning

confidence: 99%

Sea level 400 000 years ago (MIS 11): analogue for present and future sea-level

Bowen¹

2009

Preprint

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Abstract. Comparison of sea-levels today and 400 000 years ago (MIS 11), when the Earth's orbital characteristics were similar, may provide indications of future sea-level during the present interglacial. Evidence for former sea-levels occur on uplifting coastlines where shorelines are preserved. The sea-level term and the uplift term may be separated with an "uplift uplift correction" formula. This discovers the original sea-level at which the uplifted shoreline was fashioned. Estimates are based on average uplift rates of the "last interglacial" sea-level (MIS 5.5) using a range estimates for sea-level and age at that time and at different locations. These, with varying secular tectonic regimes in different ocean basins, provide a band of estimates for MIS 11. They show the MIS 11 sea-level was close to its present level and Greenland and West Antarctic ice volumes were similar to present.

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Caribbean carbonate crash in Pedro Channel at subthermoclinal depth during Marine Isotope Stage 11: A case of basin-to-shelf carbonate fractionation?

Cited by 8 publications

References 56 publications

Mid-depth South Atlantic Ocean circulation and chemical stratification during MIS-10 to 12: implications for atmospheric CO<sub>2</sub>

Mid-depth South Atlantic Ocean circulation and chemical stratification during MIS-10 to 12: implications for atmospheric CO<sub>2</sub>

Sea level ~400 000 years ago (MIS 11): analogue for present and future sea-level?

Sea level 400 000 years ago (MIS 11): analogue for present and future sea-level

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Caribbean carbonate crash in Pedro Channel at subthermoclinal depth during Marine Isotope Stage 11: A case of basin-to-shelf carbonate fractionation?

Cited by 8 publications

References 56 publications

Mid-depth South Atlantic Ocean circulation and chemical stratification during MIS-10 to 12: implications for atmospheric CO&lt;sub&gt;2&lt;/sub&gt;

Mid-depth South Atlantic Ocean circulation and chemical stratification during MIS-10 to 12: implications for atmospheric CO&lt;sub&gt;2&lt;/sub&gt;

Sea level ~400 000 years ago (MIS 11): analogue for present and future sea-level?

Sea level 400 000 years ago (MIS 11): analogue for present and future sea-level

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Product

Resources

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Mid-depth South Atlantic Ocean circulation and chemical stratification during MIS-10 to 12: implications for atmospheric CO<sub>2</sub>

Mid-depth South Atlantic Ocean circulation and chemical stratification during MIS-10 to 12: implications for atmospheric CO<sub>2</sub>