geol 1040 lab exam

Question 1

 Angular Unconformity

Answer 1

 Sediments deposited on top of older tilted sediments or sedimentary rock. There is a period of erosion between the tilting of the older rocks and deposition of the younger sediments

Question 2

nonconformity

Answer 2

 Sediments deposited on top of igneous or metamorphic rock. There is a period of erosion between the emplacement of the older igneous or metamorphic rocks and the deposition of the younger sediments

Question 3

disconformity

Answer 3

 Parallel layers of sediments or sedimentary rocks with a “gap in time” in between them. There is a period of non-deposition or erosion accounting for this unconformity.