Download Warm-up #22 Feb.10

Igneous
Metamorphic
Sedimentary
Word Bank
•Intrusive/extrusive
•Marble
•Clastic/chemical
•Foliated/nonfoliated
•Limestone/shale
•Magma
•Part of the rock cycle
•Metamorphism
•Compaction and
cementation
•Classified by texture
•Lava/magma solidifies
•Granite/pumice
•Pressure/hydrothermal
solutions
•Heat/pressure/fluid

Igneous Rock – texture





Course-grained
Fine-grained
Glassy
Porphyritic
Which is characterized by two distinctly
different crystal sizes?
 Course-grained

Lava that cools so quickly that ions do not
have time to arrange themselves into crystals
will form what type of igneous rock?
 Glassy

Why can two igneous rocks have the same
minerals but different names?
 The rocks may have different textures

What type of sedimentary rock is formed
from weathered particles of rock and
minerals
 Clastic or Chemical?

Fossils are only found in what type of rock?
 Sedimentary rocks

Most of the heat for CONTACT
metamorphism is supplied by what?
 A nearby mass of magma

What agent of metamorphism can cause the
overall composition of the rock to change?
 Heat? Pressure? Or a hydrothermal solution?

What is the only example we talked about for
a nonfoliated metamorphic rock?
 Marble

Nonfoliated rocks are composed of only one
mineral and form large interlocking crystals.