Main categories of rock from a geologic view
- What are the three main categories of rock from a geologic view (the three types in the Rock Cycle), and how are they formed?
- Plot and calculate the LL of the following data (#blows, %m): (9,40), (15,37), (35,33), (36,30). Show the CORRECT graph.
- What are the two kinds of processes that break rock down into sediment? Briefly describe.
- Two types of geologically deposited soils:
a. Residual and excavated
b. Silty and windy
c. Residual and transported
d. Brown and gray
e. Colluvium and Archastic - The four major types of soils (in terms of particle size) in construction are:
- If a soil sample starting dry weight is 400 grams, it is washed through a #200 sieve and dried, and weighed again at 340 grams, what is the soil’s LBW? Show work.
- The 3 main physical states of clay (in a volume-moisture relationship) are __, _, and __.
- How many blows per second is the liquid limit device cranked?
- What is “PI”? How is PI calculated? If an LL is 35 and PL is 20, what is the PI?
- Liquid Limit is the lower moisture limit of what state of clay? Draw the diagram showing the moisture contents vs. states of clay.
