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I mean to illustrate portions of Baja, California were offset after which rafted to the edge of California. But for instance parts of China traveled all the best way across the Pacific Ocean, and they have been rafted into the sides of Oregon; that can be far traveled. These land masses have hooked up to the continent in the course of the subduction of Pacific Ocean lithosphere over the previous 150 million years. Through geologic time, the quantity of continental material on Earth has slowly grown in size on the expense of the ocean basins. Because the crust rises, rocks from ever deeper ranges contained in the Earth are brought to the floor and worn away. In the identical way, tall mountains normally have roots extending deeper into the Earth than low mountains made up of the same rock kind. Ultimately, in fact, mountain constructing ends, and that indicators the end of convergent plate movement, a settling back or perhaps low angle distributive faulting occurs, which lengthen the mountain belt relatively than compress it, and the forces of erosion as soon as this constructional stage is over take over. To elucidate this discrepancy Airy concluded that a low density root must lie beneath the vary. Given rates of erosion, these mountains ought to have worn flat tens of hundreds of thousands of years ago; yet they nonetheless stand, indicating that some uplift have to be persevering with.