Elementary T informaion tiChastY 3 Cross beds can be used to determine paleocurr

Question

Elementary T informaion tiChastY 3 Cross beds can be used to determine paleocurrent directions. Such int of great value in regional stratigraphic study. Often, nis fully exposed, and their true attitude must be calculated from data on apparent Consider a cross bed in sandstone that is exposed on two vertical non faces. On one face the apparent dip of the cross bed is 100,0160, whereas other it is 280,0820 ons. Su 9. however, cross beds are not t dip joint parallel (a) What is the attitude of the cross bed? (b) Assume that the current direction is parallel to the true dip direction of the cross bed. What was the orientation of the current direction during deposition of the sandstone? (c) What is the orientation of a joint face on which the apparent dip of the cross bed is the maximum possible value? " 10. An east-west line of section in the Rusty Ridge Quadrangle cuts across a folded sequence of Carboniferous strata. A portion of the line of section is shown in Figure 3-M2. I n order to draw a cross section along this line, it is necessary to

Explanation / Answer

Ans:

(a). The attitude of cross bed may be possible in both directions as per given in problem i.e 10, 016, & 28, 082.

(b). True Dip Direction : The maximum inclination of strata from horizontal is called true dip in direction of dip or perpendicular of strike direction.

      The orientation of current direction is towards east or towards west direction.

(c). The orientation of joint face on which the apparent dip of the cross bed is the maximum possible value28, 082

Related Questions

Navigate

• Browse (All)
• Browse E
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.