|
This is a free sample preview of the essay
Coconino Sandstone
Beginning of essay
Abstract
The sediments and the trace fossils of the record the advance passage of a major eolian sand sea. Both invertebrate and vertebrate traces indicate that the substrate was, was for the most part, very dry though it was clear that light rainfall or dew periodically moistened the dune surface ....
Middle of essay
.... Colorado Plateau.
Lithology
This layer averages about 260 million years old and is composed of pure quartz sand, which are basically petrified sand dunes. Wedge-shaped cross bedding can be seen where traverse-type dunes have been petrified. The color of the layer averages from white to cream colored. No skeletal fossils have yet been found but numerous invertebrate tracks and fossilized burrows do exist.
Brand’s work has indicated that the track-ways of the vertebrates in the sandstone were.... |
| Number of words: 1125 |
Approximate pages: 5 |
|
Need help with writing your essay? Sign up today to view the rest of this paper and get unlimited access to over 45000 other essays just
like it. Some other sites charge you for each essay, but here at EssayPal we give you full access to our entire database for one low subscription
fee. Thousands of other students around the world have realized what an affordable deal this is and have become members. Come see what
you are missing out on. Once you've become a member, you will not go back to the other term paper sites either.
| Length |
Type |
Price |
PayPal |
| 30 days |
recurring |
$19.95 |
| 90 days |
recurring |
$39.95 |
| 180 days |
non-recurring |
$69.95 |
|
|
|
