Ice age as a trigger of active Quaternary volcanism and tectonism

Nakada, Masayuki; Yokose, Hisayoshi

doi:10.1016/0040-1951(92)90298-k

Cited by 58 publications

(27 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Maclennan et al (19) found a link between deglaciation and volcanism in Iceland that they attributed to increased melt generation rates in the shallow mantle caused by unloading of the ice sheet. Numerical studies have shown that mantle stress accumulation associated with glaciation͞ deglaciation and meltwater change may have triggered or accelerated active Quaternary volcanism of the circum-Pacific (20). Eruptions might be induced by climatically driven atmospheric jolts to the solid Earth's rotational angular momentum (21) or by crustal stresses resulting from ice-sheet loading͞ unloading effects on the planet's distribution of mass.…”

Section: Resultsmentioning

confidence: 99%

“…A lthough the Earth maintains a remarkably constant temperature, climate fluctuations have been identified on many timescales. On the 10 3 -year scale, poorly understood DansgaardOeschger (DO) events (1, 2), extremely rapid coolings͞warmings and subsequent cold͞warm periods, are best exhibited during the last glacial period [20,,000 years before the present or 20-110 thousand years ago (ka)] but may extend with reduced amplitude into the Holocene (3) (the comparatively stable, warm, last Ϸ11 ka). Proposed causal mechanisms involve harmonics of Milankovitch (orbital) forcing, thermohaline circulation, internal ocean-atmosphere oscillations, solar forcing, and even long-period tidal resonances in the motions of the Earth and Moon.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Bipolar correlation of volcanism with millennial climate change

Bay

Bramall

Price

2004

Proc. Natl. Acad. Sci. U.S.A.

View full text Add to dashboard Cite

Analyzing data from our optical dust logger, we find that volcanic ash layers from the Siple Dome (Antarctica) borehole are simultaneous (with >99% rejection of the null hypothesis) with the onset of millennium-timescale cooling recorded at Greenland Ice Sheet Project 2 (GISP2; Greenland). These data are the best evidence yet for a causal connection between volcanism and millennial climate change and lead to possibilities of a direct causal relationship. Evidence has been accumulating for decades that volcanic eruptions can perturb climate and possibly affect it on long timescales and that volcanism may respond to climate change. If rapid climate change can induce volcanism, this result could be further evidence of a southern-lead North-South climate asynchrony. Alternatively, a volcanic-forcing viewpoint is of particular interest because of the high correlation and relative timing of the events, and it may involve a scenario in which volcanic ash and sulfate abruptly increase the soluble iron in large surface areas of the nutrientlimited Southern Ocean, stimulate growth of phytoplankton, which enhance volcanic effects on planetary albedo and the global carbon cycle, and trigger northern millennial cooling. Large global temperature swings could be limited by feedback within the volcano-climate system.

show abstract

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

Bipolar correlation of volcanism with millennial climate change

Bay

Bramall

Price

2004

Proc. Natl. Acad. Sci. U.S.A.

View full text Add to dashboard Cite

show abstract

“…Ongoing glacial erosion throughout a glacial period may further reduce confining pressure as well as the structural integrity. Finally, far field effects, such as the unloading of the continents and rising sea level, may encourage volcanism by opening passageways or altering the pressure in magma chambers (Nakada and Yokose, 1992;McGuire et al, 1997).…”

Section: Other Possible Contributors To Increased Volcanismmentioning

confidence: 99%

Feedback between deglaciation, volcanism, and atmospheric CO2

Huybers

Langmuir

2009

Earth and Planetary Science Letters

292

268

View full text Add to dashboard Cite

“…Climate-driven changes in magma supply in several terrestrial settings have been attributed to the loss of glaciers, some up to 2 km thick (9,10). However, whether ~100 m change in sea level can be effectively recorded in seafloor bathymetry is unclear (6,7,11).…”

mentioning

confidence: 99%

Sensitivity of seafloor bathymetry to climate-driven fluctuations in mid-ocean ridge magma supply

Olive

Behn

Ito

et al. 2015

Science

View full text Add to dashboard Cite

Recent studies have proposed that the bathymetric fabric of the seafloor formed at mid-ocean ridges records rapid (23-100 kyr) fluctuations in ridge magma supply caused by sea level changes that modulate melt production in the underlying mantle. Using quantitative models of faulting and magma emplacement, we demonstrate that, in fact, seafloor-shaping processes act as a low-pass filter on variations in magma supply, strongly damping fluctuations shorter than ~100 kyr. We show that the systematic decrease in dominant seafloor wavelengths with increasing spreading rate is best explained by a model of fault growth and abandonment under a steady magma input. This provides a robust framework for deciphering the footprint of mantle melting in the fabric of abyssal hills, the most common topographic feature on Earth.One Sentence Summary: The fabric of the seafloor is best explained by the interaction between fault growth and crustal emplacement, which is largely insensitive to climatically controlled variations in ridge magma supply.Main Text: Seafloor abyssal hills are the most common topographic feature on the surface of the solid Earth. They consist of a juxtaposition of bathymetric highs and lows with a characteristic spacing of 1-10 km and amplitude of up to a few hundred meters, elongated parallel to crustal isochrons (1-3). These features form at mid-ocean ridges (MORs) through the interaction of volcanism and faulting coincident with the creation of new oceanic lithosphere (2,4,5) (Fig. 1).The fabric of abyssal hills has recently been proposed to record fluctuations in MOR magma supply driven by climatically controlled sea level variations with a periodicity of up to 100 kyr (6). It was shown that sea level changes of ~100 m associated with glacial (Milankovitch) cycles could induce pressure changes on the sub-ridge mantle undergoing decompression melting, thereby modulating the flux of melt supplied to the ridge axis (6, 7). This mechanism was proposed to drive oceanic crustal thickness fluctuations of ~600 m, and give rise to isostatically compensated seafloor topography with wavelengths reflecting Milankovitch periodicities (23, 41, and 100 kyr). Spectral power at these wavelengths in the bathymetry of the intermediate-spreading Australian-Antarctic Ridge (AAR) was presented as evidence for this process (6). Moreover, an independent study revealed a strong spectral peak near the 100-kyr period for seafloor created at the fast-spreading East Pacific Rise, although peaks at the 23-and 41-kyr periods were not observed (8). If confirmed, a major implication of this model is that abyssal hill fabric represents a proxy for paleo sea level change.Climate-driven changes in magma supply in several terrestrial settings have been attributed to the loss of glaciers, some up to 2 km thick (9, 10). However, whether ~100 m change in sea level can be effectively recorded in seafloor bathymetry is unclear (6,7,11). We combine classic seafloor observations with recently developed and improved models of MOR dynamics ...

show abstract

Ice age as a trigger of active Quaternary volcanism and tectonism

Cited by 58 publications

References 16 publications

Bipolar correlation of volcanism with millennial climate change

Bipolar correlation of volcanism with millennial climate change

Feedback between deglaciation, volcanism, and atmospheric CO2

Sensitivity of seafloor bathymetry to climate-driven fluctuations in mid-ocean ridge magma supply

Contact Info

Product

Resources

About