EAS 2600 Lecture Notes - Lecture 5: Igneous Textures, Volcanic Glass, List Of Rock Formations

• School: Georgia Tech
• Department: Earth and Atmospheric Sciences
• Course: EAS 2600
• Professor: Ingall Ellery

Document Summary

* igneous - crystallizes from cooling of magma; intrusive & extrusive. * sedimentary - deposited @ earth "s surface by physical , chemical or biologic agents & then buried. * metamorphic - rocks formed bythe transformation of preexisting solid rocks due to changes in temperature & pressure . sorry i missed ur lecture tuesday i had a depressive episode & wantedto die hi ellery a ee. Igneous rocks - form as magma cools & crystallites (cid:8869) plutonic liritrusive rocks : formed inside earth f igneous textures : depends on where the rocks are formed . volcanic (extrusive rocks i formed at surface w/ lava(magma w/gas) Pyroclasts volcanicash bomb pumice *extrusive rocks - typically very glassy ( volcanic ash) (disorganized si tetrahedrons) b/c the cooling process was so fast (hotline to organize) * igneous rocks extruded on *typically form in violent eru. pj. hn the surface typically have a left violent : mafic (basalt) gabbro.