Lecture 2.5 - Chemical Sedimentary Rocks

Question 1

Characteristics of limestone

Answer 1

Chemical sedimentary + Calcite (H < nail)

Question 2

Characteristics of rock salt

Answer 2

Chemical sedimentary + halite

Question 3

Characteristics of rock gypsum

Answer 3

Chemical sedimentary + gypsum (H = 2)

Question 4

Characteristics of Chert

Answer 4

Chemical sedimentary + quartz + invisible texture (H = 7) + semi-conchoidal fracture

Question 5

Define gradient

Answer 5

Variable changes with distance

Question 6

Definition of floodplain

Answer 6

Bluff to bluff, flat, levees on banks and fine sediment in back swamp

Question 7

Define longshore drift

Answer 7

Movement of sand down beach cleans it up to pure quartz
- beach environments = quartz sandstone