Rock n Roll
The most common type of sedimentary rock
Shale
Igneous rocks can have four textures. What are they?
Glassy, fine-grained, coarse-grained, or porphyritic
Composed of rounded, sand-sized grains
Sandstone
The structure of rocks that have visible layers or bands aligned in planes
Foliated structure
Give an example of an organic sedimentary rock
Coal
Fossils are most likely to be found in what type of rock?
Sedimentary
Light colored, lightweight igneous rocks that are rich in silicon, aluminum, sodium, and potassium such as granite
Felsic rocks
This type of sedimentary rock is composed of rounded, pebble-sized sediments
Conglomerate rock
Structure that has no visible layers or bands
Nonfoliated structure
Fine-grained limestone
Chalk
Give TWO examples of common sediments
Gravel, sand, silt, mud
Dark colored, heavy igneous rocks that contain iron, magnesium, and calcium, such as basalt
Mafic rocks
This type of conglomerate rock is made of sharp cornered fragments and forms at the bases of cliffs
Breccia
Give an example of a rock with a nonfoliated structure
Marble
Limestone forms from what mineral?
Calcite
The Cliffs of Dover, in England, are made of what type of rock?
Limestone
What is the difference between fine-grained and coarse-grained rocks?
Fine-grained rocks have crystals that can only be seen under a microscope. Coarse-grained rocks have crystals that are large enough to be seen with the nake eye
Composed of clay-sized particles in flat layers
Shale
What type of metamorphic rock is the Washington Monument made of?
Marble (or nonfoliated)
The Duomo in Florence, Italy, is made of what type of rock?
Marble
Where do conglomerate rocks form?
At the mouths of rivers and beaches
Describe a porphyritic texture
Large crystals scattered on a background of smaller crystals
Form from shells of clam, plankton, and other aquatic creatures
Limestone
Give THREE examples of rocks with a foliated structure
slate, schist, and gneiss
Give the name of a rock with a porphyritic structure
Trachyte