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Metasediment
| Глоссарий геологических терминов |
A sediment or sedimentary rock that shows evidence of having been subjected to metamorphism. gg
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Sedimentary, английский
Metamorphism, английский
- The process that causes mineralogical, chemical, or structural changes in solid rocks by exposing them to new pressure and temperature conditions by bur- ial within the crust or mantle. metasomatic: formed by metasomatism, a geologic process that produces new minerals in an existing rock by replace- ment.
- Alteration of mineralogy, texture and structure of the rock due to high
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Meteorite crater, английский
An impact crater formed by the falling of a large meteorite onto the earth’s surface; e.g., barringer crater (az). compare - crater, impact crater. sw & gg
Melt-out till, английский
Till derived from slow melting of debris-rich stagnant ice buried beneath sufficient overburden to inhibit deformation under gravity, thus preserving structures derived from the parent ice. compare - flowtill, lodgment till. gg mesa - a broad, nearly flat-topped, and usually isolated landmass bounded by steep slopes or precipitous cliff and capped by layers of resistant, nearly horizontal, rocky summit width greater than the height of bounding escarpments. (colloquial: western usa; not preferred) also used to designate broad structural benches and alluvial terraces that occupy intermediate levels in stepped sequences of platforms bordering canyons and valleys. compare - butte, plateau, cuesta. hp & gg
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