Modern CaCO3 preservation in equatorial Pacific sediments in the context of late-Pleistocene glacial cycles

Anderson, Robert F.; Fleisher, Martin Q.; Lao, Yong; Winckler, Gisela

doi:10.1016/j.marchem.2007.11.011

Cited by 85 publications

(88 citation statements)

References 64 publications

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“…The cyclic deposition of late Pleistocene biogenic CaCO 3 sediments has been well established in the equatorial Pacific (e.g., Weber and Pisias 1999;Anderson et al 2008). The deposition pattern of biogenic CaCO 3 is characterized by good preservation during glacial stages and poor preservation during interglacial stages.…”

Section: Glacial-interglacial Cyclicity Of Biogenic Caco 3 Depositionmentioning

confidence: 99%

“…In general, there are two possible causes for this glacial-interglacial CaCO 3 pattern: surface water productivity and deep water corrosiveness. Surface water productivity is primarily derived from the co-variation of CaCO 3 MARs and other biogenic phases in sediments, and appears to be at a maximum during glacial periods (Chuey et al 1987;Lyle et al 1988;Archer 1991;Anderson et al 2008). Khim et al (2012) reported on co-variations between CaCO 3 content and the MARs of PC5101 sediments.…”

Section: Glacial-interglacial Cyclicity Of Biogenic Caco 3 Depositionmentioning

confidence: 99%

“…One of the most striking features used to elucidate the missing atmospheric CO 2 related to paleoclimatic change is the quasi-regular variability pattern in the biogenic (CaCO 3 and opal) content of Pleistocene marine sediment in the Equatorial Pacific (e.g., Anderson et al 2008). The Equatorial Pacific CaCO 3 cycles, with higher contents during glacial than interglacial periods, reflect a preservation-production signal, where the oceans are more productive during glacial times (e.g., Lyle et al 1988;Archer 1991;Herguera and Berger 1991;.…”

Section: Introductionmentioning

confidence: 99%

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Biogenic CaCO3 and Opal Depositions and Their Latitudinal Comparison During the Past 600 ka in the Central Equatorial Pacific

Khim¹,

Yoo²,

Kim³

et al. 2015

Terr. Atmos. Ocean. Sci.

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The orbital-scale variations in biogenic CaCO 3 and opal abundance in two piston cores collected in the central equatorial Pacific (core PC5101 from a southern site at 2°N, and core PC5103 from a northern site at 6°N) were compared to assess latitudinal differences. The correlation between the oxygen isotope stratigraphy of planktonic foraminifera (Globigerinoides sacculifer) of PC5103 with the LR04 stacks provides the age of PC5103 to be approximately 950 ka. The age of PC5103 was further refined by correlating the CaCO 3 content with the well-dated core RC11-210. The age of PC5101 was also constrained by the same CaCO 3 chronostratigraphic correlation with RC11-210, resulting in an age of approximately 650 ka. Distinct orbital-scale series of CaCO 3 and opal variations appear to be parallel between the two cores during the past 600 ka, which are controlled mainly by eccentricity with an approximate periodicity of 100 ka. It is worth noting that the biogenic CaCO 3 and opal deposition patterns in the two cores differ between interglacial and glacial periods. During interglacial periods the biogenic opal content is higher in the southern core than in the northern core, which corresponds with the present-day condition. In contrast the CaCO 3 content is higher in the northern core, which is contradictory to the present-day northward decreasing CaCO 3 deposition pattern from the Equator. The collection site of PC5101 is approximately 350 m deeper than that of PC5103, which significantly promotes CaCO 3 dissolution and causes unexpectedly high CaCO 3 content at the northern site in contrast to the biogenic opal content.

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Section: Glacial-interglacial Cyclicity Of Biogenic Caco 3 Depositionmentioning

confidence: 99%

Section: Glacial-interglacial Cyclicity Of Biogenic Caco 3 Depositionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Biogenic CaCO3 and Opal Depositions and Their Latitudinal Comparison During the Past 600 ka in the Central Equatorial Pacific

Khim¹,

Yoo²,

Kim³

et al. 2015

Terr. Atmos. Ocean. Sci.

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“…Pleistocene glacial periods are also marked by higher CaCO 3 accumulations in deep-sea pelagic sediments of the equatorial Pacific Ocean (Chuey et al 1987;Prell 1988, 1991;Archer 1991Archer , 1996Berger 1992;Oxburgh and Broecker 1993;LaMontagne et al 1996;Kawahata et al 1998;Murray et al 2000;Lyle et al 2002;Zhang et al 2007; Anderson et al 2008). In general, enhanced primary production in specific areas of glacial oceans, such as in low-latitude equatorial regions, was to some extent attributed to the decline of atmospheric CO 2 concentrations (Farrell and Prell 1988;Berger 1992;Murray et al 2000).…”

Section: Introductionmentioning

confidence: 99%

“…It appears more general to accept that productivity increased during the glacial period, supporting a La Niña-like glacial climate with stronger trade winds and higher upwelling rate. However, the recognition of productivity change along the equator is not widespread, although accumulation rates of biogenic materials in sediments have been reported from specific locations in the equatorial Pacific Ocean (Archer 1996;LaMontagne et al 1996;Weber and Pisias 1999;Murray et al 2000;Pichat et al 2004;Zhang et al 2007;Anderson et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Orbital Variations of Biogenic CaCO3 and Opal Abundance in the Western and Central Equatorial Pacific Ocean During the Late Quaternary

Khim¹,

Kim²,

Cho³

et al. 2012

Terr. Atmos. Ocean. Sci.

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Biogenic CaCO 3 and opal abundances were measured in two piston cores (PC313 and PC5101) collected, respectively, along the equator in the western and central Pacific Ocean. The age model for core PC313, which extends to about 750 ka, was developed by comparing the oxygen isotope stratigraphy of planktonic foraminifera (N. dutetrei) to the SPECMAP stack. The age model for core PC5101, which extends to about 600 ka, was developed by stratigraphic correlation of CaCO 3 contents to those in the well-dated core RC11-210 (Chuey et al. 1987). Both cores distinctly exhibited a series of CaCO 3 and opal variations, which are mainly controlled by the orbital eccentricity cycle of about 100-kyr. The orbital-scale cyclic variations of CaCO 3 and opal contents appear to be contrasting in both cores such that high CaCO 3 and low opal contents occurred during the glacial periods. In contrast, during the interglacial periods, low CaCO 3 and high opal contents occurred. Mostly remarkable is the distinct occurrence of a mid-Bruhnes event (MBE) at around 350 ka. The CaCO 3 content was higher in core PC5101 than in core PC313 before the MBE, whereas biogenic opal abundance became higher in core PC5101 after the MBE. Such a characteristic discrepancy of biogenic (CaCO 3 and opal) production, i.e., a succession of primary producers from coccolithophore to diatom, between cores PC313 and PC5101 may be attributed to the prevailing dominant hydrographic conditions (i.e., the South Equatorial Current), in the path of which both cores are located. The intensity of westward propagation might have been an important factor in contrasting biogenic production centering around the MBE.

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Calcite saturation, foraminiferal test mass, and Mg/Ca‐based temperatures dissolution corrected using XDX—A 150 ka record from the western Indian Ocean

Johnstone

Kiefer

Elderfield

et al. 2014

Geochem Geophys Geosyst

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A record of deep-sea calcite saturation ðD½CO 22 3 Þ, derived from X-ray computed tomographybased foraminifer dissolution index, XDX, was constructed for the past 150 ka for a core from the deep (4157 m) tropical western Indian Ocean. G. sacculifer and N. dutertrei recorded a similar dissolution history, consistent with the process of calcite compensation. Peaks in calcite saturation ($15 mmol/kg higher than the present-day value) occurred during deglaciations and early in MIS 3. Dissolution maxima coincided with transitions to colder stages. The mass record of G. sacculifer better indicated preservation than did that of N. dutertrei or G. ruber. Dissolution-corrected Mg/Ca-derived SST records, like other SST records from marginal Indian Ocean sites, showed coolest temperatures of the last 150 ka in early MIS 3, when mixed layer temperatures were $4 C lower than present SST. Temperatures recorded by N. dutertrei showed the thermocline to be $4 C colder in MIS 3 compared to the Holocene (8 ka B.P.).

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Modern CaCO3 preservation in equatorial Pacific sediments in the context of late-Pleistocene glacial cycles

Cited by 85 publications

References 64 publications

Biogenic CaCO3 and Opal Depositions and Their Latitudinal Comparison During the Past 600 ka in the Central Equatorial Pacific

Biogenic CaCO3 and Opal Depositions and Their Latitudinal Comparison During the Past 600 ka in the Central Equatorial Pacific

Orbital Variations of Biogenic CaCO3 and Opal Abundance in the Western and Central Equatorial Pacific Ocean During the Late Quaternary

Calcite saturation, foraminiferal test mass, and Mg/Ca‐based temperatures dissolution corrected using XDX—A 150 ka record from the western Indian Ocean

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