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单词 mortar structure
释义 mortar structure
[`mȯrd·ǝr ´strǝk·chǝr]
PETROLOGY
A cataclastic structure produced by dynamic metamorphism of crystalline rocks and characterized by a mica-free aggregate of finely crushed grains of quartz and feldspar filling the interstices between or forming borders on the edges of larger, rounded relicts. Also known as cataclastic structure; murbruk structure; porphyroclastic structure.
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