Question

Explain about the following.
(I) Organic, Mechanical and Chemical Sedimentary Rocks.
(ii) Thermal and Dynamic Metamorphism.​

Answer 1

Answer:

1 ) There are three basic types of sedimentary rocks. Clastic sedimentary rocks form from the accumulation and lithification of mechanical weathering debris. ... Examples include: chert, some dolomites, flint, iron ore, limestones, and rock salt. Organic sedimentary rocks form from the accumulation of plant or animal debris.

2 ) Thermal metamorphism: where temperature is the dominant agent. Examples include contact aureoles around plutons, and ocean floor metamorphism influenced by heat from mid - oceanic ridges. Dynamic metamorphism: where pressure is the main factor effecting recrystallization and mineral growth.

Explanation:

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