Earth Sciences GEOG 1214
East Central University
Rocks and Minerals
Lab Activity #6
List the three major rock groups
________________________ ___________________________ ______________________
Of the three rock types, which one is most likely to contain fossils? Explain the reason of your choice
Which rock group is formed from molten material? ___________________________
Which rock group is composed of clastic material and/or chemical deposition?________________________
Which rock group forms by alteration under intense heat and pressure?______________________________
A volcano produces rocks from which rock group? ______________________________________________
What factor determines the size of the crystals in igneous rocks? ___________________________________
Processes occurring at lithospheric boundaries from heating, pressure, and shearing form rocks of which rock group?
A coral reef is formed of rock from which rock? ___________________________
What is the name for the continuous alteration of Earth’s materials from one type of type of rock into another?
What are two possible environments for the origin of sedimentary rock sandstone?
Examine rocks and identify them using the Rock identification Keys
Go outside and collect at list 2 rocks for each category, take a selfie with them.
Use the attached identification key and try to identify them. Write about the texture, color and dominant minerals.
Detrimental or Chemical
Texture (grain size)
Sediment name or Composition
Foliated or nonfoliated