1.   Into these flowed more molten rock, carrying minerals such as tin oxide.

2.   Molten rock flowed into these cracks.

3.   Rivers of molten rock were flowing down the sides of the volcano.

4.   The molten rock hardens into amorphous forms.

5.   Consequently, intrusions can be formed either by molten rock or by rock experiencing rheid flow.

6.   Bulls-eyes of low gravity may mark sites where bodies of low-density molten rock tried to rise to the surface, bringing with them copper and gold.

7.   But for mythic allure nothing matches the skyward bolt of molten rock and blue ice that rises from nearly sea level in the backyard of three million people.

8.   By May, St. Helens was bulging with magma, or molten rock.

9.   In reality, molten rock is only part of the problem.