Answer:
(C) ocean floor
Explanation:
The protolith or parent rocks that forms schists are basically mudstones and shales. These are clastic sedimentary rocks that are rich in fines(clay sized particles).
Most shales are usually formed in deep ocean floors because larger sized clastic sediments cannot reach these environments. Winds and waves acts as active agents to deposit fines on the ocean floor.
Since shales are predominantly made up of clay minerals which are products of micas that have been chemically altered, we expect these clay minerals which are hydrous(contains water) to revert back to mica under metamorphic conditions.
As metamorphic transformation progresses under intense pressure and temperature and also minerological transformation, our rock moves from slate, to phllylite and then to schists.
Slate is a low grade metamorphic rock that is usually fine grained and foliated. As metamorphism increases, mica begins to grow and a shiny lustre appears in the rock, a phyllite results. Schists have larger mica grains and are foliated also.
Desert dunes are mostly made of sandstones. Their metamorphic transformation yields quartzite.
Coral reefs ar made up of rich calcite deposits and would form a metamorphic rock known as marble.
Answer:45
Explanation: I did 35 perecent of 180
Atlantic ocean
Explanation:
The longest mountain range on earth is located on the floor of the Atlantic ocean.
The mountain range is called the Mid-Oceanic Ridge or Mid-Atlantic Ridge.
- It cuts through the length of the Atlantic ocean extending from South Atlantic to the North Atlantic.
- The mid- oceanic ridge occupies a spreading center where land masses of the lithoshperic plate diverges from a point.
- From the center, rich basaltic magma upwells and settles at the edge of the oceanic crust.
- The mid oceanic ridge cuts the continent at Iceland bringing useful geothermal energy to upper crustal levels.
- It is the largest and the most extensive mountain range on the earth surface.
learn more:
Sea floor spreading brainly.com/question/9912731
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Answer:
A. archipelagos
Explanation:
They all got groups of tiny islands
