This is the Vishnu Schist and Zoroaster Granite, rocks from the heart of a mountain range. The river isjust barely out of the picture to the bottom.Correct Answer(s):C 12. Points Earned: 1.0/1.0
11/3/2016 RockOn #10 6/8 The picture above shows a region of hard rock about six inchesacross from the Grand Canyon.The shape and polish of the rock areinteresting.It is likely that the rock: 13. Points Earned: 1.0/1.0
11/3/2016 RockOn #10 7/8 14.Geological evidence based on several radiometric techniques has provided a scientifically wellaccepted age for theEarth. Represent that age of the Earth as the 100yard length of a football field, and any time interval can berepresented as some distance on the field. (So something that lasted onetenth of the age of the Earth would beten yards, and something that lasted onehalf of the age of the Earth would be fifty yards.) On this scale, howlong have you personally been alive? Feedback: If the 4.6 billion years of Earth history are 100 yards, then the few thousand years of written historyare just onemillionth of that history, just over the thickness of a sheet of paper. And your small piece of writtenhistory must be only a small fraction of a sheet of paper, roughly 1/200th or so.In the two pictures above, I and II, show traces of former life in rocks from the Grand Canyon. Each is "typical";therocks near sample I contain fossils similar to those shown in sample I, and the rocks near sample II contain fossilssimilar to those shown in sample II.It is likely that:
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- Fall '08
- Rockon 10, Quiz 10, Correct Answer