Name: Earth Sciences GEOG 1214 East Central University Rocks and Minerals Lab

Name:

Earth Sciences GEOG 1214

East Central University

Rocks and Minerals

Lab Activity #6

Rock groups

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.

Igneous rocks

Texture

Color (light-intermideate-dark)

Dominant Minerals

Rock name

Sedimentary rock

Detrimental or Chemical

Texture (grain size)

Sediment name or Composition

Rock name

Metamorphic rock.

Foliated or nonfoliated

Grain size

Composition

(if identifiable)

Rock name