Rock Cycle
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Transcript of Rock Cycle
Rock Cycle
Diagram of the Interior of the EarthCrust
0 to 40 km 0°C
Upper Mantle40 to 670 km
1,000°C
Lower Mantle670 to 2,890 km
2,000°C
Outer Core2,890 to 5,150 km
3,700°C
Inner Core5,150 to 6,370 km
4,300°C Prepared by the Michigan Department of Environmental Quality
Office of Geological Survey
Minerals Minerals – Naturally formed solid that
has a repeating three-dimensional shape
Minerals are• Nonliving material• Have crystals• Formed in nature• solid
Identifying Minerals Luster Color Streak Cleavage and
Fracture Density Hardness
Streak is simply the color of a mineral powder.
Moh’s Hardness Scale What rock will scratch Calcite but not
scratch Orthoclase?
Hardness of some other items:
2.5 Fingernail2.5–3 Gold, Silver
3 Copper penny4-4.5 Platinum4-5 Iron5.5 Knife blade6-7 Glass6.5 Iron pyrite7+ Hardened steel file
Mineral Properties Video Clip
Rocks Minerals combine to form rocks There are three types of rocks
• Igneous• Sedimentary• Metamorphic
http://www.cet.edu/ete/modules/msese/earthsysflr/rock.html
Igneous Rock Igneous forms when hot, liquid rock,
or magma, cools and hardens Igneous rock formed on the surface is
called extrusive Rock formed under surface is
intrusive
Extrusive Intrusive
Sedimentary Rocks Sedimentary rocks are formed from
compaction and sedimentation Sedimentary contain layers called
strata
Metamorphic Rock Metamorphic rock is formed by heat
and pressure
=Heat and Pressure
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