Upload
rhona-fields
View
63
Download
0
Tags:
Embed Size (px)
DESCRIPTION
Topic: Igneous Rocks. Igneous Rocks. - Lava – Magma –. Cooling. Solidification – Crystallization –. Igneous Classification. Mineral composition - Texture - -. Important!!!!. Extrusive Igneous Rocks. - - -. Intrusive Igneous Rocks. - -. - PowerPoint PPT Presentation
Citation preview
Topic: Igneous Rocks Topic: Igneous Rocks
Igneous RocksIgneous Rocks
-- Lava – Lava – Magma – Magma –
CoolingCooling
SolidificationSolidification – – CrystallizationCrystallization – –
Igneous ClassificationIgneous Classification
Mineral composition -Mineral composition - Texture -Texture -
– --
ExtrusiveExtrusive Igneous Rocks Igneous Rocks
-- -- --
IntrusiveIntrusive Igneous Rocks Igneous Rocks
- - --
Animation: Igneous Rock Animation: Igneous Rock Environments of FormationEnvironments of Formation
http://www.classzone.com/books/earth_science/terc/content/investigations/es0603/es0603page05.cfm?chapter_no=investigation
Best Friend Pg 6Best Friend Pg 6
Scheme for Igneous Rocks for Scheme for Igneous Rocks for identificationidentification
Take out YOUR ESRT!Take out YOUR ESRT!
Identifying Igneous RocksIdentifying Igneous RocksIgneous Rock Names
Environment of Formation
Crystal Crystal sizesize
DescriptionGrain Size
Bubbles?Bubbles? Yes= Vesicular
Bubbles?Bubbles? No=Non-vesicular
ColorColorVery Light
LightNotVery LightNot Very Dark
DarkVery Dark
Neither Light nor Dark
Ligh
test
Darke
st
DensityDensityVery Low
Low DenseVery Dense
Medium Density
CompositionComposition
CompositionComposition
Felsic Rocks – Felsic Rocks – – --– --– --
MaficMafic– --– --– --
Finding The MineralsFinding The MineralsIdentify the rock.Unless you have other information,
work in the middle of the rock’s box.
This is the amount of Potassium Feldspar in the rock.
This is the amount of Quartz in the rock.
This is the amount of Plagioclase Feldspar in the rock.
Use tick marks on a scrap paper to measure the percentage.Potassium Feldspar 25%
Quartz 40%
PracticePracticeName a light-colored, fine-grainedrock with no bubbles.
Name a coarse-grained, dense rock & contains only Olivine.
Name a very light-colored, glassy, extrusive rock with bubbles.
FQ:FQ:Name the fine grain, vesicular Name the fine grain, vesicular igneous rock, with the minerals igneous rock, with the minerals
plagioclase feldspar, pyroxene and plagioclase feldspar, pyroxene and amphiboles.amphiboles.