1. 4-4 pgs. 95-99 IN: What are some ways that sedimentary rock can form? Can you classify the four we looked at?

2. sedimentary rock sediment magma cooling, crystallization weathering and erosion compaction, cementation melting high temperature great pressure igneous rock metamorphic rock

3.  Rocks in which the structure, texture, or composition of the rock has changed.

4.  Heat and/or pressure.  Metamorphism does not melt rock- when rock melts, it becomes magma and then igneous rock.

5.  Metamorphic change takes place at depths greater than 2 km.  The temperature at which metamorphism occurs ranges from 50 o C to 1,000 o C.

6.  Contact ◦ In contact with magma.  Regional ◦ Heat and pressure cause rock to chemically change.

7.  When rock comes into contact with magma.

8.  When enormous pressure builds up in rock that is deeply buried under other rock formations, or when large pieces of the Earth’s crust collide.

9.  The mineral composition of a rock changes when the minerals it is made of recrystallize to from new minerals.

10.  Some metamorphic minerals form only within specific range of temperature and pressure conditions. ◦ Muscovite mica ◦ 700 o C ◦ 5-34 km

11.  Many of these new minerals occur only in metamorphic rock. ◦ Chlorite ◦ Muscovite mica ◦ Garnet

12.  Foliated ◦ Contain aligned mineral grains.  Nonfoliated ◦ Do not contain aligned minerals grains.

13.  Metamorphic rock can become other metamorphic rocks if the environment changes again. ◦ shale  slate  phyllite  schist  gneiss

14.  Made of only one, or just a few, minerals.

15.  Metamorphic rock formed from shale and used for tiling. ◦ Foliated

16.  Metamorphic rock that is formed from slate metamorphosing again. ◦ Foliated

17.  Metamorphic rock formed from the igneous rock granite. ◦ Foliated

18.  Metamorphic rock formed from limestone and used for sculpture. ◦ Non-foliated

19. ◦ Sandstone  Quartzite ◦ Limestone  Marble ◦ Shale  Slate ◦ Granite or Shale  Gneiss

20.  OUT: What some features of metamorphic rocks?