Download THE TOP 10 OF ROCKS

1
Rock
Basalt
2
Granite
3
Obsidian
4
Conglomerate
5
Mudstone
6
Sandstone
7
Limestone
8
Coal
9
Slate
10
Marble
THE TOP 10 OF ROCKS- Know these rocks.
Type of Rock
Category
Details
Igneous
Extrusive
Small interlocking crystals due to fast cooling above
ground.
Igneous
Intrusive
Large interlocking crystals due to slow cooling
underground.
Igneous
Extrusive
No crystals due to
rapid cooling.
Sedimentary Clastic
Large rocks cemented between grains. Created in fast
flowing water
Sedimentary Clastic
Particles microscopic formed in slow moving water.
Formed by clay or Mud
Sedimentary Clastic
Particles are usually harder than mudstone, formed by
sand particles
Sedimentary Chemical
Formed shallow marine waters from accumulation of
shells, coral, algae
Sedimentary Biogenic
Dead plant matter or animal matter accumulate over
time and cemented together.
Metamorphic Foliated
Morphed from mudstone under increased but still
relatively low levels of heat and pressure
Metamorphic Non-foliated Morphed from limestone under high levels of heat and
pressure