You spend a summer as a laboratory assistant for a scientist whose specialty is radiometric age dating, using the 14C dating technique. You know that the half life for 14C is 5,730 years. True or False. Each question is worth 2 points. In a thrust fault, the hanging wall moves up relative to the footwall and the angle that the thrust fault forms from a horizontal plane is generally 15 or less.
Thrust faults are very common in western Montana.
F The spreading rate of oceanic spreading centers has been linked to rises and falls in the position of global sea level. Fast spreading ridges occupy lots of volume and thus displace more sea water, resulting in a sea level rise. Slow spreading ridges are narrower, occupy less volume and, hence, displace less sea water resulting in a lower sea level. Because the mantle is deep within the earth and under a lot of pressure, most earthquakes originate there. Sandstone is a good example of a non-clastic sedimentary rock a.