There is also multiple types of strains; elastic, yield point, plastic, and fracture.
My favorite topic of this week was folds. A part of a fold that i remember well is the fold nose or hinge fold, which is usually at the axis. There was also two types of folds that we dicussed in full, anticline and syncline. Anticline concave downward and they are made up of older rocks. Synclines are made up of younger rocks and concave upward. Synclines make a smiley face while anticlines make an A if you draw a straight line across the downward fold.
The following picture shows an anticline to the left, a downward fold, and syncline to the right which is an upward fold.
I had some trouble understanding this as well but I also feel that I am getting the concept. About the strains, I still feel that I need help on that but with class explanations I am sure I will understand it soon.
ReplyDeleteThanks for posting about this, as this is something I should be committing to memory also. Okay so compression is easy because the pressure is pushing the object together, tension is pulling apart, like a putting tension on a rope to keep it straight, and, heres the one im having trouble with: Shear. When an object is sheared its being pressured in two opposite directions. The diagrams you posted really helped me visualize it better. Thanks so much!
ReplyDelete-Ashton Cody