WSU IB area of Bol l need a soblm A and B will be hand graded. Fill out the name
ID: 288470 • Letter: W
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WSU IB area of Bol l need a soblm A and B will be hand graded. Fill out the name and after the start of ht and the assignment sheet before the exam on Thursday, March &. Homework turned in after the start of the on a separate sheet will lose points and homework at the end of the class will be considered late. Homework this sheet. All multiple-choice questions are wortted exam paper will not be accepted for this assignment because you need both a scantron and All rock units are sedimentary unless otherwise noted. KEY All rocks are sedimentary unless otherwise noted Hint: There is a worked example on the course web page for you to review. wwwwsu.edu/l-geology 101/seci On a separate piece of paper first determine the complete order of events from oldest (bottom) to youngest (top) before you label the events below Problem A Cross Section: (total 7 points) a) Label the following events from oldest (1) to youngest (7) (3.5pts) oceans rise or land subsides and deposition of units A,B,C,D,E forming UC1 | |-, oceans rise or land subsides, unconformity UC2 -uplift and erosion of F and Z Intrusion Y E deposition of F.Z forming Intrusion of X into unknown rock forming modern day surface uplift and erosion of unknown rock type exposing igneous unit X uplift, tlting and erosion of units A,B,C,D,E and Y gneous 1) How can we tell the age of intrusion X relative to the age of intrusion Y? By using which principle? (05pt) a) intrusion X is older; principle of cross cutting relationships b) intrusion X is older; principle of superposition c) intrusion X is younger: principle of cross cutting relationships d) intrusion Y is younger; principle of superposition 2) What type of unconformity (UC1) is present between Intrusion x and Layer A? (0.5 pt) a) angular unconformity b) non conformity c) disconformity 3) What type of unconformity (UC2) exists between sedimentary layers A,B.C.D,E and sedimentary layer F? (0.5 pt). b) disconformity c) non-conformity a) angular unconformityExplanation / Answer
Answer1
1. intrusion of X into unknown rock
2. Uplift and erosion of unknown rock type exposing igneous intrusion X
3.ocean rise and depositing A,B,C,D,E and forming unconformity UC1
4. Intrusion of Y
5.Uplift , tilt and erosion of A,B,C,D,E and Y
6. Ocean rise or land subside depositing F,Z and forming (UC2)
7.Uplift of F,Z and erosion forming modern day landforms
ANswer 1. (MCQ)
b: X is older because it is below the all formations i.e superimpose
ANswer 2.
b: nonconformity seprate the rocks of two different nature here sedimentary from igneous
Answer 3:
b: Disconformity : since there is an only depositional gap
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