monchiquite

n. [地]沸煌岩

词形变化

monchiquites 复数 monchiquites

释义与例句

n.
  1. 1.

    A black, basaltic igneous rock consisting of a ground mass of automorphic augite and magnetite with many embedded phenocrysts, usually of olivine.

    可数 不可数 化学 地质

    It resembles the analcite basalts of the Highwood Mountains, in Montana, and the monchiquites of Brazil.

    Seven samples from monchiquite dykes analysed chemically by Upton et al. (1992), including trace elements and, for three rocks, Sr and Nd isotope data, were classified on chemical grounds as olivine melanephelinite […]