How is sediment stratigraphy used? How do volcanoes form on the ocean floor? How are fossils preserved in shale? How is sedimentary deposition related to land formation? How are the LOCATIONS of volcanoes related to the Earth's plates?
Where do extrusive igneous rocks form? How do metamorphic rocks reach Earth's surface? What processes can transform metamorphic rock into sediment? What is sedimentary facies? Why do metamorphic rocks form from regional metamorphism? How do minerals form from magma?
Many of Kilauea's pre-1924 explosive eruptions that produced significant ash deposits probably happened when the volcano's summit crater was so deep that its floor was below the water table, letting groundwater seep in to form a lake. Whenever magma erupted into the lake water, violent explosio...
Igneous rocks are made from magma from the earth’s core or other rocks that have melted, crystalized, cooled, and hardened. Some examples of igneous rocks are basalt, pumice, and granite. What are Sedimentary Rocks? Sedimentary rocks are made up of sediment, small pieces of rock that have...
We commonly picture magma as big bodies of melt, but it moves upward in slim pods and thin stringers, occupying the crust and upper mantle like water fills a sponge. We know this because seismic waves slow down in magma bodies, but do not disappear as they would in a liquid. ...
Igneous rocks form when magma (molten rock) cools and crystallizes, either at volcanoes on the surface of the Earth or while the melted rock is still inside the crust. All magma develops underground, in the lower crust or upper mantle, because of the intense heat there. What causes nonconfo...
Just 50 years ago, no one knew why the Earth has mountains. Now we do. This is the story of how we figured it out - and how we keep learning.
How do crystalline sedimentary rocks form? Rocks From Sediment: Sedimentary rocks are rocks that form out of sediment, which are bits and particles of other rocks that have weathered away. Sediment can also be formed by minerals and ions. Three main types of sedimentary rock are clastic, crysta...
How do floods cause erosion? What are the consequences of gully erosion? How do magma intrusions affect the law of superposition? Explain how ripples on the surface of water are produced. How can slope affect the development of soil?
How do landforms from magma form and become exposed? What processes can transform metamorphic rock into sediment? How does subduction produce magma? What igneous rocks form below Earth's surface? What is a metamorphic rock formed from basalt? How are fossils formed in sedimentary rocks? Where mig...