Statistics of the geomagnetic dipole reversals based on paleomagnetic observations and simple geodynamo models

Kalashnikov, I. Yu.; Sokoloff, Dmitry; Чечеткин, В. М.

doi:10.1134/s1069351315030052

Cited by 7 publications

(1 citation statement)

References 8 publications

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“…The calculated thermal expansivity from Hubert and Plicque (1972) 279.7 Göttlicher and Vegas (1988) 279.6 (1) Maslen et al (1993) 279.5 (1) Fiquet et al (1994) 279.7 (3) Zhang et al (1997) 279.32 (15) 103 (±1) 4 (fixed) Ross (1997) 279.28 (3) 111 (±1) 4 (fixed) Fiquet and Reynard (1999) 279.1 108 (±2) 4.6 (±0.2) Fiquet et al (2002) 279.2 (2) 108 (±3) 5.0 (±0.2) Isshiki et al (2004) 103 (±2) 5 (fixed) Litasov et al (2008) 279.55 (2) 97.1 (±0.5) 5.44 (±0.07) Shock Kalashnikov et al (1973) 107 (±3) 4.5 (±0.2) Calculations Catti, Pavese, Apra, et al (1993) 278.9 Catti, Pavese, Dovesi, et al (1993) Geochemistry, Geophysics, Geosystems…”

Section: Vibrational and Thermodynamic Properties Of Magnesitementioning

confidence: 99%

Thermodynamic and Elastic Properties of Magnesite at Mantle Conditions: First‐Principles Calculations

Yao

Zou

et al. 2018

Geochem Geophys Geosyst

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Magnesite (MgCO3) is a likely main host of carbonates in the mantle and plays an important role in the transport and storage of carbon in the Earth's mantle. Its physical properties at high pressure and high temperature (PT) are crucial for understanding the deep carbon cycle. Here we investigated thermodynamic and elastic properties of magnesite under the mantle PT conditions using first‐principles calculations with local density approximation (LDA). Magnesite has the seismic velocities close to those of forsterite. The effect of the magnesite on seismic velocity of the carbonated peridotite and eclogite is subtle in the upper mantle. However, magnesite has much smaller seismic velocities and far larger elastic anisotropy than major minerals in the transition zone and lower mantle. The enrichment of magnesite in the transition zone and lower mantle will likely produce seismically detectable low‐velocity zone and velocity anisotropy.

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