Rock Cycle and 3 Types of Rocks - Sedimentary, Igneous and Metamorphic YouTube Lecture Handouts

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Rock Cycle and 3 Types of Rocks - Sedimentary, Igneous and Metamorphic

Illustration: Rock Cycle and 3 Types of Rocks - Sedimentary, Igneous and Metamorphic YouTube Lecture Handouts

IGENOUS ROCKS

Illustration: IGENOUS ROCKS
Table of Classification of Igneous Rocks - 1
Ultra-felsicFelsic (Granitic)IntermediateMafic

(Basaltic)

Ultramafic
Light colored

Low in iron, magnesium, calcium, High in potassium, aluminum, sodium

Medium coloredDark colored

High in iron, magnesium, calcium

Low in potassium, aluminum, sodium

Dark colored Very high in iron, magnesium
Very high silica content (up to 80%)Silica/Oxygen:> 65%Silica/Oxygen: 53% to 65%Silica/Oxygen: 45% to 52%Silica/Oxygen:< 45%
very low temperature, cools quicklyLow temperatureMedium temperatureHigh temperatureVery high temperature
Extremely sticky magmaHigh viscosityLow viscosity - flow easily
Medium volatile contentLow volatile contentVery low volatile content
Table of Classification of Igneous Rocks - 2
Felsic (Granitic)IntermediateMafic

(Basaltic)

Ultramafic
Aphanitic

fine grain

(Fast cooling, Extrusive)

RhyoliteAndesiteBasaltConditions to produce ultramafic flows do not exist in nature
IntermediateDaciteDiabase
Phaneritic

coarse grain

(Slow cooling, Intrusive)

GraniteDioriteGabbroPeridotite
GlassyObsidian
FrothyPumiceScoria

SEDIMENTARY ROCKS

METAMORPHIC ROCKS

Manishika