Download 2.2 Rocks

2.2 Rocks
2.2.1 Three rock types
2.2.2 The rock cycle
2.2.2 The three rock types
1.
2.
3.
Igneous rock (หินอัคนี)
Sedimentary rock (หินตะกอน)
Metamorphic rock (หินแปร)
• 95% of upper 10 miles (16 km) of Earth’s crust is igneous rock
• 5% is thin, widespread sedimentary and metamorphic layers
• 80% of Earth’s land surface covered by sedimentary rocks
Igneous rock
►
Igneous (Latin) = fire
►
Igneous rocks are formed by cooling and
solidification of magma
►
Igneous rock Æ plutonic rock
Æ volcanic rock
Æ pyroclastic rock
George Washington (1732-1799)
Thomas Jefferson (1743-1826)
Theodore Roosevelt (1858-1919)
Abraham Lincoln (1809-1865)
http://en.wikipedia.org/wiki/Teddy_bears
http://library.thinkquest.org/05aug/00461/images/rushmore.jpg
Pillow lava
Mae Tha Basalt, Lampang
Sedimentary rock
►
Sedimentum (Latin) = settling
►
Sediment:
weathering
products
of
previously existing rocks.
ƒ Chemical weathering Æ chemical sedimentary rocks
ƒ Mechanical weathering Æ clastic sedimentary rocks
►
Sedimentary
rocks
are
consolidation of sediment
formed
by
Metamorphic rock
► Metamophic rock
ƒ Meta (Greek) = change
ƒ Morphe (Greek) = form
► Derived from preexisting rocks (igneoussedimentary
or
metamorphic
rocks)
by
mineralogical, textural and structural changes
► Changes are resulted from temperature-pressure
or both
Regional metamorphism
► Contact metamorphism
►
http://www.geology110.com/files/lecture7/html/images/objects/obj72-1.jpg
http://www.tulane.edu/~sanelson/images/metagrade.gif
http://www.uky.edu/AS/Geology/howell/101/metamorph.gif
พระพุทธมหาวชิรอุตตโมภาสศาสดา
เขาชีจรรย สัตหีบ ชลบุรี
Rock cycle
http://www.oum.ox.ac.uk/thezone/rocks/cycle/images/tourhome.gif
Lithification (compactioncementation)
http://www.fas.org/irp/imint/docs/rst/Sect2/rock_cycle_800x609.jpg
http://earthsci.org/processes/geopro/introgeo/rockcycle.gif
Divergent plate
boundary
convergent plate
boundary
Transform
boundary
http://falconsscience.files.wordpress.com/2008/02/plate-boundaries.jpg
LinkÆ http://www.suu.edu/faculty/colberg/Hazards/PlateTectonics/18_Pangaea.html
Tectonic cycle
http://www.indiana.edu/~g103/G103/wk1/seafloor%20copy.jpg