Unit 4: Vocabulary from Readings

The rocks are breccias, their name derived from the word Italian stonemasons use to describe bits of broken stone held together like pebbles in concrete.

It vaporized, ejected, melted or pulverized the rock beneath it, creating a crater more than 120 miles in diameter.

To understand the story that the two NMNH breccias tell about the crater and its significance, you have to go back in time about 20 years, hardly more than an instant compared with the 65 million that have elapsed since the asteroid did its work.

Like the findings of earlier PEMEX geologists, Penfield’s were intended to map out the rock composition beneath the surface and determine the likelihood of finding oil.

Scale of Geologic Time: A Scientific Chart

Era: Cenozoic, Mesozoic, Paleozoic

Period: Quaternanry, Tertiary...

Epoch: Holocene, Pleistocene...

He provided all that was needed for food, clothing, and shelter. His migrations decided where and how the Indians were to live.

The bewildered animals then became easy targets for a good shot with a bow and arrow.

Little boys on their colts followed the older hunters, to shoot the straggling buffalo calves.

Imagine finding a resplendent twenty-pound specimen of the chicken mushroom (Laetiporus sulphureus) and proudly bringing it home.

Imagine finding a resplendent twenty-pound specimen of the chicken mushroom (Laetiporus sulphureus) and proudly bringing it home.

That evening you have a party at your house, and you sauté a whole mess of the mushroom and pass it around to your guests as a delectable and novel finger food.

Although mushrooms taste wonderful, they have fallen in disrepute because of a shocking murder.

But not in this tutorial. I would recommend the third kind of compass.

But why isn’t this technique sufficient? It is not very accurate.

If you are taking a long hike in unfamiliar terrain, you should always carry a good map that covers the terrain—especially if you are leaving the trail.