1 / 10

Metamorphic

Metamorphic. Metamorphic (means to change ) formed from changes in igneous, sedimentary or other metamorphic rocks. Metamorphic Rocks. Metamorphic rocks have changed form due to temperature and pressure increases or they undergo changes in the composition of a metamorphic rock.

nishi
Télécharger la présentation

Metamorphic

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. Metamorphic • Metamorphic (means to change) formed from changes in igneous, sedimentary or other metamorphic rocks.

  2. Metamorphic Rocks • Metamorphic rocks have changed form due to temperature and pressure increases or they undergo changes in the composition of a metamorphic rock.

  3. What causes metamorphic rocks?Two processes….. • Heat and pressure is involved in both of these processes.

  4. Contact Metamorphism • heated by nearby magma • Increased temperature changes the composition of the rock, minerals are changed into new minerals Hornfels is a fine-grained non-foliated metamorphic rock produced by contact metamorphism http://www.windows.ucar.edu/tour/link=/earth/geology/meta_contact.html&edu=h igh&fr=t

  5. Regional Metamorphism • pressure builds up in rocks that is deep within the Earth • Large pieces of the Earth’s crust collide and the rock is deformed and chemically changed by heat and pressure http://www.windows.ucar.edu/tour/link=/earth/geology/meta_regional.html&edu=high&fr=t

  6. Foliated Non- foliated Classification of Metamorphic Rocks http://itc.gsw.edu/faculty/bcarter/physgeol/metrx/pmarble.JPG

  7. Foliated • They have layers of colored bands • Or layers of mineral alignment but no colors are visible • Foliated rocks include slate, schist, gneiss.

  8. Non-foliated • They do not have layers or colored bands. • Usually this type of rock only has one type of mineral. • Non-foliated rocks include marble and quartzite.

More Related