-
Since they are still preserved in the rocks for us to see, they must have been formed quite recently, that is, geologically speaking. What can explain these striations and their common orientation? Did you ever hear about the Great Ice Age or the Pleistocene Epoch? Less than one million years ago, in fact, some 12,000 years ago, an ice sheet many thousands of feet thick rode over Burke Mountain in a southeastward direction. The many boulders frozen to the underside of the ice sheet tended to scratch the rocks over which they rode. The scratches or striations seen in the park rocks were caused by these attached boulders. The ice sheet also plucked and rounded Burke Mountain into the shape it possesses today.
-
Turning away from the ledge, he started slowly down the mountain, deciding that he would, that very night, satisfy his curiosity about the man-house. In the meantime, he would go down into the canyon and get a cool drink, after which he would visit some berry patches just over the ridge, and explore among the foothills a bit before his nap-time, which always came just after the sun[31] had walked past the middle of the sky. At that period of the day the sun’s warm rays seemed to cast a sleepy spell over the silent mountainside, so all of the animals, with one accord, had decided it should be the hour for their mid-day sleep.
-
It went through such rapid contortions that the little bear was forced to change his hold on it so many times he became confused in the darkness, and could not, for the life of him, tell whether he held the sheep right side up, or upside down. But that point was decided for him a moment later by the animal itself, who, with a sudden twist,[52] jabbed its horns so hard into his lowest ribs that he gave a grunt of anger and disgust.