“mantle”的概念、定义、翻译、参考文献-科学参考

mantle

Astronomy

A thick layer within a planetary body, underneath the crust but overlying the core, and differing in composition from both. The Earth’s mantle is about 2900 km thick. Its top lies about 7 km beneath the oceans, and about 30 km beneath the continents.

Biology

The fold of skin covering the dorsal surface of the body of molluscs, which extends into lateral flaps that protect the gills in the mantle cavity (the space between the body and mantle). The outer surface of the mantle secretes the shell (in species that have shells).

Geology and Earth Sciences

1. Zone lying between the Earth’s crust and core, approximately 2300 km thick. The mantle is probably similar in composition to garnet peridotite and it represents about 84% of the Earth’s volume and 68% of its mass. A mantle is present in most terrestrial planets and the Moon, but is of a different composition in each case.
2. (pallium) In Brachiopoda and Mollusca, a layer of tissue that covers the body and is responsible for the secretion of the shell.

Geography

The mantle, with a density of up to 3.3 g cm⁻³, and a thickness of some 2 800 km, lies between the crust and the Earth’s core. The upper layer, immediately below the Moho discontinuity, is rigid, forming the lower lithosphere; the lower layer is the asthenosphere. Zhou et al. (2002) Lithos. 62, 3 see the interaction between continental crust and subcontinental mantle as expressing geodynamic processes deep in the subcontinental lithospheric mantle. See Husson (2006) Geology 34, 9 on upper mantle flow.

单词	mantle
释义	mantle Astronomy A thick layer within a planetary body, underneath the crust but overlying the core, and differing in composition from both. The Earth’s mantle is about 2900 km thick. Its top lies about 7 km beneath the oceans, and about 30 km beneath the continents. Biology The fold of skin covering the dorsal surface of the body of molluscs, which extends into lateral flaps that protect the gills in the mantle cavity (the space between the body and mantle). The outer surface of the mantle secretes the shell (in species that have shells). Geology and Earth Sciences 1. Zone lying between the Earth’s crust and core, approximately 2300 km thick. The mantle is probably similar in composition to garnet peridotite and it represents about 84% of the Earth’s volume and 68% of its mass. A mantle is present in most terrestrial planets and the Moon, but is of a different composition in each case. 2. (pallium) In Brachiopoda and Mollusca, a layer of tissue that covers the body and is responsible for the secretion of the shell. Geography The mantle, with a density of up to 3.3 g cm⁻³, and a thickness of some 2 800 km, lies between the crust and the Earth’s core. The upper layer, immediately below the Moho discontinuity, is rigid, forming the lower lithosphere; the lower layer is the asthenosphere. Zhou et al. (2002) Lithos. 62, 3 see the interaction between continental crust and subcontinental mantle as expressing geodynamic processes deep in the subcontinental lithospheric mantle. See Husson (2006) Geology 34, 9 on upper mantle flow.
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