After field stop 3B, we left Shenandoah National Park and headed towards the Veach Gap Trial. At this point the weather, which had been so nice throughout the day, turned on us. The one bright side was that it gave me a chance to try out my new rain gear which I had bough for field camp. The area that we were in the Massanuten synclinorium. We were sent out to determine how many anticlines we could find and record the data. All together there were six anticlines but I only gathered data on three.
One classification used to describe folds is the Hudleston classification.
 |
| Hudleston classification. |
Anticline 1
The first anticline has a Hudleston classification of 3C and a Fleuty classification of Upright, Gently Plunging. There were slickenlines seen on the sides. The right limb's orientation was 075°, 57° and the left limb was 238°, 55°.
 |
| Anticline 1 |
When plotted on an anticline to find the hinge it looked like this.
 |
| Anticline 1 on a stereonet. |
Anticline 2
The second anticline has a Hudleston classification of 2D and a Fleuty classification of Upright, Moderately Plunging. The right limb has an orientation of 090°, 53° and the left is 219°, 50°. The hinge line is plunging at 35° degrees.
 |
| Anticline 2 |
When plotted on an anticline to find the hinge it looked like this.
 |
| Anticline 2 on a stereonet. |
Anticline 3
The third anticline has a Hudleston classification of 2F and a Fleuty classification of Steeply Plunging, Upright. The right limb has an orientation of 052°, 76° and the lift limb is 052°, 76°.
 |
| Third anticline. |
When plotted on an anticline to find the hinge it looked like this.
 |
| Stereonet of anticline 3. |
No comments:
Post a Comment