Matuyama 41,000-year cycles: North Atlantic Ocean and northern hemisphere ice sheets

Ruddiman, William F.; Raymo, Maureen E; McIntyre, Andrew

doi:10.1016/0012-821x(86)90024-5

Cited by 462 publications

(241 citation statements)

References 21 publications

Supporting

Mentioning

232

Contrasting

Unclassified

Order By: Relevance

“…With coring of two or more holes at a site, it is possible to splice across these gaps by correlating into the offset hole and then back into the main hole. For sites 607 and 609, this was done onboard leg 94 based on visual examination of the CaC~ layering of North Atlantic sediments [Ruddiman et al, 1986d]. All shipboard correlations have s ubsequently been checked by CaC0 3 analyses and in some cases adjusted slightly.…”

Section: Composite Depth Sectionsmentioning

confidence: 99%

“…Using K/Ar-dated magnetic reversals for initial chronologie control , Ruddiman et al [1986b) found that oscillations in 5110, percent CaCO) and estimated SST at site &:11 during the late Matuyama were concentrated at a period near that of orbital obliquity. These oscillations were used to tune the record by assigning each a 10,000-year lag behind a specific obliquity minimum o r maximum.…”

Section: Testing Tht Match Of Obliquity Cyclesmentioning

confidence: 99%

“…Northern he misphere climatic variations during the Matuyama Chron were very diffccenL Records from hydraulic piston cores taken on Deep Sea Drilling Project (DSDP) leg 94 [Ruddiman et al, 1986b) support earlier suggestions [Shackleton and Opdyke, 1976;Pisias and Moore, 1981;Start and Prell, 1984] that the 41 ,000-year period of orbital obliquity was the primary rhythm of northern hemisphere climatic change during the Matuyama Chron, with variations at periods near 100,000 years generally much weaker and even absent altogether during some intervals in the leg 94 records. This conclusion was based both on 6 18 0 and other indicators known to be sensitive to northern hemisphere ice sheet size, such as estimated North Atlantic sea surface temperature (SS1) and percent CaC~ This 41,000-year rhythm prevailed from the beginning of moderate·scale northern hemisphere glaciation ncar 2.6 to 2.4 Ma [Backman, 1979;ShackJeton et al, 1984] through most of the Matuyama Chron [Ruddiman et al, 1986b].…”

Section: Introductionmentioning

confidence: 99%

“…This conclusion was based both on 6 18 0 and other indicators known to be sensitive to northern hemisphere ice sheet size, such as estimated North Atlantic sea surface temperature (SS1) and percent CaC~ This 41,000-year rhythm prevailed from the beginning of moderate·scale northern hemisphere glaciation ncar 2.6 to 2.4 Ma [Backman, 1979;ShackJeton et al, 1984] through most of the Matuyama Chron [Ruddiman et al, 1986b]. By 0.9 Ma, a longer-period, higher-amplitude signal had begun to develop [Shackleton and Opdyke, 1976;Pisias and Moore, 1981;Prell, 1982], leading to the Brunhes 100,000-year fluctuations.…”

Section: Introductionmentioning

confidence: 99%

“…We also follow standard practice by adding 0 .9%o to S 13 C values measured on Uvigerina to bring them into equilibrium with Cibicidoides, which is in near equilibrium with seawater. Ruddiman et al [1986c] previously reported numerous site 607 5 11 0 analyses run on a VG 903 mass spectrometer. In general, the VG 903 values for a given sample were considerably lighter than the MAT 251 values, with differences often in excess of 0.5%o and sometimes in excess of l.O%o.…”

mentioning

confidence: 99%

See 4 more Smart Citations

Pleistocene evolution: Northern hemisphere ice sheets and North Atlantic Ocean

Ruddiman¹,

Raymo²,

Martinson³

et al. 1989

Paleoceanography

778

467

View full text Add to dashboard Cite

Abs~ract. We analy:ro five high-resolution time series spanmng the last 1.65 m.y.: benthic foraminiferal 5110 and 5'~C. percent CaC03o and estimated sea surface temperature (SS1) at Nonh Atlantic Deep Sea Drilling Project site 007 and percent CaC~ at site 609. E ach record is a multicore compo<;ite verifiC;d fo~ c?nti.nuity by splicing among multiple hole~. The~e chmauc. mdtces portray changes in northern hemtsphere tee sheet stze and in North Atlantic surface and deep circulation. By tuning obliquity and precession components in the 5 11 0 record to orbital variations we have devised a time scale (TP607) for the entire Pleist~ene that agrees in age with aU K/Ar-dated magnetic reversals to within 1.5%. The Brunhes time scale is taken from Imbrie et al. (1984], except for differences near the stage 17/16 transition (0.70 to 0.64 Ma). All indicators show a similar evolution from the ~uyama to the B.runhes chrons: orbital eccentricity and_ prece~1o.n responses mcreased in amplitude; those at orbttal obliqutty decreased. The change in dominance from Paper number 89PA00434. 0883-8305/89/89PA-00434$10.00 obliquity to eccentricity occurred over several hundred thousand years, with fa stest changes around 0.7 to 0.6 Ma. The coherent, in-phase responses of 5"0. 5 1 3C, CaC03 and SST at these rhythms indicate that northern hemisphere ice volume changes have controlled most of the North Atlantic surfaceocean and deep-ocean responses for the last 1.6 m.y. Tbe 5 1 3C, percent CaCO; and SST records at site 607 also show prominent changes at low frequencies, including a prominent long-wavelength oscillation toward glacial conditions that is centered between 0.9 and 0.6 Ma These changes appear to be associated neither with orbital forcing nor with changes in ice volume.

show abstract

Section: Composite Depth Sectionsmentioning

confidence: 99%

Section: Testing Tht Match Of Obliquity Cyclesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

Pleistocene evolution: Northern hemisphere ice sheets and North Atlantic Ocean

Ruddiman¹,

Raymo²,

Martinson³

et al. 1989

Paleoceanography

778

467

View full text Add to dashboard Cite

show abstract

Influence of late Pleistocene glaciations on the hydrogeology of the continental shelf offshore Massachusetts, USA

Siegel

Person

Dugan

et al. 2014

Geochem Geophys Geosyst

View full text Add to dashboard Cite

Multiple late Pleistocene glaciations that extended onto the continental shelf offshore Massachusetts, USA, may have emplaced as much as 100 km 3 of freshwater (salinity <5 ppt) in continental shelf sediments. To estimate the volume and extent of offshore freshwater, we developed a three-dimensional, variable-density model that couples fluid flow and heat and solute transport for the continental shelf offshore Massachusetts. The stratigraphy for our model is based on high-resolution, multichannel seismic data. The model incorporates the last 3 Ma of climate history by prescribing boundary conditions of sea level change and ice sheet extent and thickness. We incorporate new estimates of the maximum extent of a late Pleistocene ice sheet to near the shelf-slope break. Model results indicate that this late Pleistocene ice sheet was responsible for much of the emplaced freshwater. We predict that the current freshwater distribution may reach depths up to 500 meters below sea level and up to 30 km beyond Martha's Vineyard. The freshwater distribution is strongly dependent on the three-dimensional stratigraphy and ice sheet history. Our predictions improve our understanding of the distribution of offshore freshwater, a potential nonrenewable resource for coastal communities along recently glaciated margins.

show abstract

Testing astronomically tuned age models

et al. 2015

View full text Add to dashboard Cite

Astrochronology is fundamental to many paleoclimate studies, but a standard statistical test has yet to be established for validating stand-alone astronomically tuned time scales (those lacking detailed independent time control) against their astronomical insolation tuning curves. Shackleton et al. (1995) proposed that the modulation of precession's amplitude by eccentricity can be used as an independent test for the successful tuning of paleoclimate data. Subsequent studies have demonstrated that eccentricity-like amplitude modulation can be artificially generated in random data, following astronomical tuning. Here we introduce a new statistical approach that circumvents the problem of introducing amplitude modulations during tuning and data processing, thereby allowing the use of amplitude modulations for astronomical time scale evaluation. The method is based upon the use of the Hilbert transform to calculate instantaneous amplitude following application of a wide band precession filter and subsequent low-pass filtering of the instantaneous amplitude to extract potential eccentricity modulations. Statistical significance of the results is evaluated using phase-randomized surrogates that preserve the power spectrum structure of the data but have randomized amplitude modulations. Application of the new testing algorithm to two astronomically tuned data sets demonstrates the efficacy of the technique and confirms the presence of astronomical signals. Additionally, it is demonstrated that a minimal tuning approach using (at maximum) one precession cycle per~100 kyr eccentricity cycle does not introduce systematic frequency modulations, even when a narrow band-pass filter is applied, allowing direct comparison of data amplitudes and orbital eccentricity.

show abstract

Matuyama 41,000-year cycles: North Atlantic Ocean and northern hemisphere ice sheets

Cited by 462 publications

References 21 publications

Pleistocene evolution: Northern hemisphere ice sheets and North Atlantic Ocean

Pleistocene evolution: Northern hemisphere ice sheets and North Atlantic Ocean

Influence of late Pleistocene glaciations on the hydrogeology of the continental shelf offshore Massachusetts, USA

Testing astronomically tuned age models

Contact Info

Product

Resources

About