“metamorphic zone”的概念、定义、翻译、参考文献-科学参考

metamorphic zone

Geology and Earth Sciences

The area between two successive isograds in a metamorphic terrain. The zone is named after the lower-grade isograd (see metamorphic grade). For example, the area lying between the garnet isograd and the kyanite isograd for pelitic rocks in a regional metamorphic terrain is termed the garnet zone. The zone defines a set of pressure, temperature, P(H₂O), and P(CO₂), over which there were no mineralogical reactions in the particular rock composition concerned. Normally, the chemical composition of pelites is used as a marker.

单词	metamorphic zone
释义	metamorphic zone Geology and Earth Sciences The area between two successive isograds in a metamorphic terrain. The zone is named after the lower-grade isograd (see metamorphic grade). For example, the area lying between the garnet isograd and the kyanite isograd for pelitic rocks in a regional metamorphic terrain is termed the garnet zone. The zone defines a set of pressure, temperature, P(H₂O), and P(CO₂), over which there were no mineralogical reactions in the particular rock composition concerned. Normally, the chemical composition of pelites is used as a marker.
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