metamorphism

How To Use metamorphism In A Sentence

• The phase of metamorphism dealing with the constructive changes in rocks, due to cementation, dynamic movements, and igneous influences, is called _anamorphism_. The Economic Aspect of Geology
• From Pliocene time the shallow emplacement of intrusive bodies resulted in thermal metamorphism (forming, for example, biotite, cordierite, andalusite, K-feldspar and corundum in pelites) and hydrothermal activity.
• Furthermore, prograde metamorphism can result in weakening and superplastic behaviour of the rocks affected, as fluid pressure rises, minerals are weakened, and the grain-boundary structure is transformed by breakdown and growth.
• The classic mode of skarn formation involves high-temperature contact metamorphism wherein a silicate magma is intruded into a carbonate-rich sedimentary rock such as a limestone.
• In particular, in convective cooling the fluids that infiltrate the rocks lead to extensive thermal metamorphism and hydrothermal alteration in comparison with pure conductive cooling.
• Thus it was able to undergo intense transformations, such as mechanical deformation or metamorphism, but remain always in proximity to the surface.
• Metamorphism could be thought of as an extreme form of diagenesis, but diagenetic processes are generally distinguished from metamorphism and are considered in terms of the sedimentary rocks on which they act.
• Precambrian metamorphism and migmatization and the wide spectrum of mainly Alpine mica ages provide clear evidence for such a polyphase geological history.
• Baked contacts with host rocks indicate that metamorphism associated with intrusion predates shearing.
• Both thrust and normal faults initiated synchronously with Miocene prograde metamorphism and melting, and have moved episodically since then.