1 / 3

The Lithosphere of Earth

The Lithosphere of Earth. Igneous Processes and Volcanic Activity 1. Why study? • Thermal state • Thermal history • Composition of interior • Geothermal / Hazards • Comparative planetology 2. Volcanism and plate boundaries • Divergent

jacob
Download Presentation

The Lithosphere of Earth

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. The Lithosphere of Earth • Igneous Processes and Volcanic Activity 1. Why study? • Thermal state • Thermal history • Composition of interior • Geothermal / Hazards • Comparative planetology 2. Volcanism and plate boundaries • Divergent - Continental breakup (Flood basalts) - Mid-ocean ridge • Convergent - Domes, flows, explosive, composite volcanoes • Intraplate Volcanism - Strombolian style - Hawaiian style

  2. The Lithosphere of Earth - Volcanism Strombolian Hawaiian Plinian

  3. Volcanic Styles Plinian Activity Strombolian Activity Produces turbulent, buoyant cloud, Rises to great heights Hawaiian Activity Spatter Cone Cinder Cone Atmosphere sucked in, heated Exit velocity high Bubble Rise Rate > Magma Rise Rate Cloud collapses to pyroclastic flows Dome Growth Degasses Low viscosity gas-clast mixture Pressure greatly exceeds atmospheric pressure Fracture & Growth Magma Rise Rate > Gas Rise Rate Brittle lid Viscous gas-rich magma

More Related