Front is formed where a cold air mass and warm air mass meet
The primary cause of change in regional metamorphism is pressure. Usually rocks subjected to high pressures at considerable depth within the earth's crust will exhibit regional metamorphism like the widespread phyllites, schists, gneisses and migmatites of the Canadian Precambrian Shield for example. A phyllite is the next higher metamorphic stage than a slate, a schist is a further stage and gneiss and migmatites are of the highest grade of regional metamorphism. On the other hand, contact metamorphism usually depends more on the effect of heat from an igneous intrusion say converting a limestone to a marble (more coarse grained than limestone usually).
D. Iowa
The corn belt covers Western Indiana, Illinois, Iowa, Eastern Nebraska, and Eastern Kansas. In these states, corn is one of the dominant crops.
If erosion did not occur, no rock cycle would happen.
It would end up having large amounts of igneous, metamorphic and sedimentary rocks.
No finer rocks can be found and no flat lands can be seen.
Hello There!
It would be composition.
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