User:Atcovi/Science/Notes/Warmups: Sedimentary and Metamorphic Rocks

SIG: -Atcovi (Talk - Contribs) 01:37, 12 January 2017 (UTC) TERM:Dec 5, 2016 - December 15, 2016

Sedimentary Rocks
Formed when minerals compact back together to form a rock

Grain Sizes

 * fine grained (shale, limestone)
 * medium grained (sandstone)
 * coarse gained (breccial/conglomerate)

Clastic
Broken pieces from other rocks, rocks like these:
 * Shale
 * Sandstone
 * Conglomerate
 * Braccia

Chemical
Made when dissolved minerals are left behind after evaporation, rocks like these:
 * Halite
 * Calcite
 * Flourite

Organic
From living things, rocks like these:
 * Fossils
 * Amber

Metamorphic Rocks
Form when rocks are changed by heat and pressure
 * Contact metamorphism - Heat by nearby magma
 * Regional metamorphism - Pressure and heat deep within the earth

Foliated
Minerals line up in bonds
 * Examples: Gneiss

Nonfoliated
Minerals do not line up in lines of bands
 * Examples: Marble

Examples

 * Sandstone --> Quartzite
 * Limestone --> Marble
 * Shale --> Stale
 * Granite --> Gneiss