Rock Cycle

sixcageyMechanics

Feb 22, 2014 (3 years and 3 months ago)

75 views

Diagram of the Interior of

the Earth

Crust


0 to
40

km


0
°
C

Upper Mantle

40 to 670 km


1,000
°
C

Lower Mantle

670 to 2,890 km

2,000
°
C


Outer Core

2,890 to 5,150 km

3,700
°
C

Inner Core

5,150 to 6,370 km


4,300
°
C


Prepared by the
Michigan Department of Environmental Quality

Office of Geological Survey


Minerals


Naturally formed solid that has
a repeating three
-
dimensional shape


Minerals are


Nonliving material


Have crystals


Formed in nature


solid


Luster


Color


Streak


Cleavage and
Fracture


Density


Hardness

Streak

is simply the color of a
mineral powder.



What rock will scratch Calcite but not
scratch Orthoclase?

Hardness of some other items:


2.5


Fingernail

2.5

3

Gold, Silver

3

Copper penny

4
-
4.5

Platinum

4
-
5

Iron

5.5

Knife blade

6
-
7

Glass

6.5

Iron pyrite

7+

Hardened steel file


Video Clip


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 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 are formed from
compaction and sedimentation


Sedimentary contain layers called strata


Metamorphic rock is formed by heat and
pressure

=

Heat and
Pressure

+