Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Age of the Earth wikipedia , lookup
Composition of Mars wikipedia , lookup
History of geology wikipedia , lookup
Physical oceanography wikipedia , lookup
Magnetotellurics wikipedia , lookup
Geochemistry wikipedia , lookup
Algoman orogeny wikipedia , lookup
10.2 Intrusive Igneous Activity Plutons • Batholiths -Sills -Laccoliths • Dikes Sills Sill Batholiths Types of Igneous Plutons 10.2 Intrusive Igneous Activity Origin of Magma Geologists conclude that magma originates when essentially solid rock, located in the crust and upper mantle, partially melts. Magma Composition 10.2 Intrusive Igneous Activity Origin of Magma Role of Heat • The geothermal gradient—Earth’s natural temperature increases with depth 10.2 Intrusive Igneous Activity Origin of Magma Role of Water • Causes rock to melt at a lower temperature • Plays an important role in subducting ocean plates Basaltic Magma at the Surface