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

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Presentation on theme: "4-4 pgs. 95-99 IN: What are some ways that sedimentary rock can form? Can you classify the four we looked at?"— Presentation transcript:

1 4-4 pgs 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?


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