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The formation process of pebbles
Jan 09, 2017

That can be the river washed, there are between friction with each other. In the history of the pebbles might be due to flood, debris flow caused by the (because is generally in the mountains) but the specific reason depends on the geological structure, geographical environment, also need to refer to other mountains around.About 100 million years before the Mesozoic era, under the action of crustal movement, magma from the earth's surface, rapid cooling of magma formed granite. After thousands of years ago, caused by granite magma intrusion faulting and extrusion, which produced a large number of small stones, the stones at the water's edge, after a long period of slow water flushing and their mutual rolling, finally formed today's pebbles. Some after weathering is rounded, become the pebbles.