You Live in a Seismically Active Area and There Are

question 68

Multiple Choice

You live in a seismically active area and there are steep mountain slopes that show evidence of past large landslides.A geologist uses radiocarbon dating and determines that all of the landslides are 1000 +/- 5 years old.He also determines that there is an active fault in the area that moved in the last 1000-2000 years but he can't date it precisely.Which of the following is a reasonable conclusion?

• A)Radiocarbon dating is not a good dating technique or it could separate the ages of the slides.
• B)There was probably an earthquake ~1000 years ago.
• C)There must have been a major drought 1000 years ago that triggered the landslides.
• D)There must have been people in the area 1000 years ago,and they cut down the trees that were dated for determining the age of the landslide.