1 / 8

Mantle convection animation

hypothesis: Convection CURRENTS IN THE MANTLE drive l ithospere plate movement. Mantle convection animation. Infer: Unequal heating of the mantle material causes rock to flow in convention currents. radiant energy from decay in Earth’s core. e xtruding magma = lava. granite.

oro
Download Presentation

Mantle convection animation

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. hypothesis: Convection CURRENTS IN THE MANTLE drive lithospere plate movement Mantle convection animation Infer: Unequal heating of the mantle material causes rock to flow in convention currents radiant energy from decay in Earth’s core

  2. extruding magma = lava granite Magma contains minerals that form crystals during cooling basalt Igneous rocks are formed from magma in the lithospherE

  3. • slow to cool • visible crystals Intrusive igneous Cools within the lithosphere gabbro

  4. • Quick to cool • microcrystal formation glassy, even lava magma obsidian Extrusive igneous Cool outside the lithosphere (air/water)

  5. • One magma pool can create both intrusive and extrusive rocks • differ in crystal size, but not chemistry andesite diorite magma One magma pool, two igneous processes

  6. melt/crystallize at a lower temp • Melt/crystallization temp varies from mineral to mineral • As rocks are formed, partial melting can occur, and magma chemistry changes • Next rocks to form reflect new chemistry melt and crystallize at a higher temp One magma pool, chemically different rocks

  7. Plate material heated to 1000F, then cooled, would produce what rock types? 1400 F 800 F One magma pool, chemically different rocks

  8. Magma is defined by it’s silicate – SiO2 - concentration • basaltic – lowest SiO2, <50% basalt • andesitic – medium SiO2partial melting of basalt and granitic • granitic– highest SiO2,>70% rhyolite andesite Major magma types

More Related