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词汇 porphyroclast
释义

Definition of porphyroclast in English:

porphyroclast

noun ˈpɔːfɪrəklɑːstˈpɔːfɪrəklast
Geology
  • A relatively large grain remaining in a finer groundmass in a rock which has undergone dynamic metamorphism.

Origin

1930s; earliest use found in Journal of Geology. From porphyro- + -clast, after porphyroclastic.

Definition of porphyroclast in US English:

porphyroclast

noun
Geology
  • A relatively large grain remaining in a finer groundmass in a rock which has undergone dynamic metamorphism.

Origin

1930s; earliest use found in Journal of Geology. From porphyro- + -clast, after porphyroclastic.

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