GEOL 1001 Study Guide - Quiz Guide: Cellulose, Chert, Hematite
Document Summary
Pillow basalts globs made when lava cools in water, outside is quenched (glassy: andesite: felsic (more silicate), don"t travel as far from volcano (higher viscosity), comes from steeper volcano, texture blocky rocks, rhyolite: dome shaped top to volcano, lava so viscous it can"t travel out, steepest sides, texture same as andesite. Shield: shallow sides, not very tall, last for many eruptions (100,000s to millions of years, cinder cone/scoria cone, small, steep sides, sides of volcano made of cinders or bits of scoria, short lived (1000s of years max) Sedimentary rocks form only at the surface and make up only 8% of volume of the crust, but cover almost the entire earth"s surface: where we find fossil fuels, ground water, coal, construction, roads, tunnels, buildings cementation of loose clasts (continental, how do we makes 4 types of sedimentary rock, clasts fragments created by weathering, called clastic sedimentary rocks , minerals or rock fragments.
