lecture 3- sedimentary rock

Question 1

what is sedimentary rock?

Answer 1

rock formed by the weathering and erosion of existing rock

Question 2

what are the most common minerals of the formation of sedimentary rock?

Answer 2

quartz and clay

Question 3

describe the cycle of the sedimentary rock

Answer 3

the sediments caused by weathering are transported by lakes and rivers to the sea where they are deposited in layers where lithification can occur

Question 4

what is lithification?

Answer 4

when the layering of sediment increases allowing compression and the hardening and consolidation of the bottom layers

Question 5

what are some examples of sedimentary rock?

Answer 5

limestone, sandstone, shale

Question 6

what the 2 groups on sedimentary rock, and explain them

Answer 6

clastic:
formed from fragments of existing rock by weathering.
non-clastic:
formed from organic process or precipitation in shallow seas

Question 7

examples of clastic sedimentary rock

Answer 7

sandstone, conglomerate (rock with large fragments), breccial (rock with broken fragments)

Question 8

examples of non-clastic sedimentary rock

Answer 8

limestone, coal, gypsum and dolomite

Question 9

what does the type of clastic sedimentary rock depend on

Answer 9

depends on the “parent” material, the stability of mineral and the type/length of the weathering