The dip angle between layers C and D is 8.5 degrees. The document shows a cross section with labeled geological layers and uses a scale ratio to determine the true distance between lines A and B, which is used to calculate the dip angle between layers C and D as the tangent inverse of the height difference over the horizontal distance.

1. Determination Of Dip Angle
Engineering Geology

2. Q/ Determine The Dip Angle Between Layer C and D ?
We Know The
Layer D is :
And layer C is :
White

3. A
B
C
D
F
G
2 cm
 The Distance Between Line A And B is 2 cm in
Map and in reality is unknown ( x ) .
 The Height Between Line A And B is 100 m in
reality .
1.5 cm
(1.5 cm) in map is (500 m) in reality , then :
𝟏. 𝟓 𝐜𝐦
𝟓𝟎𝟎 𝐦
=
𝟐 𝐜𝐦
𝐱
𝒙 = 𝟔𝟔𝟔. 𝟕 𝒎

4. A
B
C
D
𝜽
𝜽 is Dip Angle
𝜽 = 𝐭𝐚𝐧−𝟏
𝟏𝟎𝟎 𝒎
𝟔𝟔𝟔. 𝟕 𝒎
𝜽 = 𝟖. 𝟓 °
A
B
C
D
2 cm
1.5 cm

5. 𝜽 = 𝟖. 𝟓 ° E

6. END
THE