DENSITIES OF METAMORPHIC ROCKS
DENSITIES OF METAMORPHIC ROCKS
复制标题
变质岩的密度
DOI:
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发表时间:
1971
期刊:
影响因子:
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通讯作者:
S. Smithson
中科院分区:
文献类型:
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作者:
S. Smithson
Although metamorphic rocks comprise a large part of the crystalline crust, relatively few data concerning metamorphic rock densities are available. In this paper, we present rock densities from seven different metamorphic terrains. Mean densities for rock types range from 2.65gm/cm3 for biotite granite gneiss to 3.04gm/cm3 for diopside granofels. Mean rock densities for metamorphic terrains range from 2.70 to 2.86gm/cm3. Rock density may decrease in the lower part of the upper crust. Most mean rock densities for metamorphic terrains fall between 2.70 and 2.79gm/cm3; the mean density of 2.67gm/cm3 commonly used for the upper crystalline crust is too low.