1. For each fault (A,B,C,D,E) determine the type of faulting that has occurred a

Question

1. For each fault (A,B,C,D,E) determine the type of faulting that has occurred and bracket the age of faulting as precisely as possible.
2. Identify the following features indicated by circled, lower-case letters on the map.
a)Type of contacts at localities a,b,c,d.
b)Specific geologic structure present at localities e,f,g, and h.
3. The strike and dip directions that are shown are correct; however, three of the dips are actually overturned. Identify which ones they are.
4. Is the unit on the east side of the map labeled "Tm" older or younger than the other Miocene rocks on the map? Explain.
5.Determine the minimum amount of displacement on fault C.

Fault A Te 60l PP Te Te Tml Fault B Fa Fault | |75 Tm Tmm 85 Fault D 0 5 10 15 Tmm kilometers Tm-Miocene Tmm - Middle Miocene PP - Pennsylvanian Tml - Lower Miocene D - Devonian ToOligocene TeEocene TR -Triassic Y Strike and dip of bedding Dip of fault (arrow) and plunge of fault striae (line) Contact s Silurian O - Ordovician -Cambrian Fault, high angle Fault, low angle (hachures on upper plate - Jurassic

Explanation / Answer

Answer:1

Fault A is normal fault, fault B is strike slip fault, fault C is reverse fault, fault D is strike slip fault and fault E is reverse fault.

Answer:2a

Contact of a, b and c are intrusive contact, whereas d are bed contact.

Answer:2a

e is fold, f is dome, g anf h are graben.

Answer:3

Strike along fault C, D and E are overturned.

Answer:4

It is younger because it is an intrusive body which is intruded at later stage.

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