During which stage of postmortem decomposition do the muscles stiffen and then relax initial decay

Rigor mortis

Rigor mortis or postmortem stiffening is the one of the stages of the changes that occurs in the dead body. It initiates after primary flaccidity in which the body relaxes after death and stiffening starts after that. In this all muscles of the body are affected. It starts developing after two to six hours after death. It first begins in the eyelids, then on neck and jaw and finally to upper and lower parts of the body. It develops due to the accumulation of lactic acid in the body. The accomplishment of rigor mortis results in the softening or relaxation of the body which is called as secondary relaxation.

events in order:

1.       vishnu schist

2. zoroaster granite

3. bass limestone

4. hakatar   shale

5. igneous intrusion

6. shinumo quartzite

7. dox sandstone

8. tapeats limestone

9. bright angel shale

10. muav limestone

11. temple butte limestone

12. redwall limestone  

nonconformity

answer: the unkar group shows angular unconformity because the layers are turned at angle.

unconformity

answer: specifically the angular unconformity occurs between the cambrian and precambrian rocks. the dox sandstone, shinumo quartzite, hakatar shale, and bass limestone have been filled. an angular unconformity occurs between the cambrian and precambrian rocks. the dox sandstone, shinumo quartzite, hakatar shale, and bass limestone have been filled.

disconformity

answer: the disconformities aremarked irregular lines between the sedimentaryrocks layers.