The Elements of Geology
by William Harmon Norton
- Used
- Condition
- See description
- Seller
-
Torrance, California, United States
999 Copies Available from This Seller
(You can add more at checkout.)
Item Price
NZ$32.89NZ$29.60
Payment Methods Accepted
About This Item
MP3 Audio CD. THE SCOPE AND AIM OF GEOLOGY Geology deals with the rocks of the earth's crust. It learns from their composition and structure how the rocks were made and how they have been modified. It ascertains how they have been brought to their present places and wrought to their various topographic forms, such as hills and valleys, plains and mountains. It studies the vestiges which the rocks preserve of ancient organisms which once inhabited our planet. Geology is the history of the earth and its inhabitants, as read in the rocks of the earth's crust. To obtain a general idea of the nature and method of our science before beginning its study in detail, we may visit some valley, such as that illustrated in the frontispiece, on whose sides are rocky ledges. Here the rocks lie in horizontal layers. Although only their edges are exposed, we may infer that these layers run into the upland on either side and underlie the entire district; they are part of the foundation of solid rock which everywhere is found beneath the loose materials of the surface. The ledges of the valley of our illustration are of sandstone. Looking closely at the rock we see that it is composed of myriads of grains of sand cemented together. These grains have been worn and rounded. They are sorted also, those of each layer being about of a size. By some means they have been brought hither from some more ancient source. Surely these grains have had a history before they here found a resting place,?a history which we are to learn to read. The successive layers of the rock suggest that they were built one after another from the bottom upward. We may be as sure that each layer was formed before those above it as that the bottom courses of stone in a wall were laid before the courses which rest upon them.
Reviews
(Log in or Create an Account first!)
Details
- Bookseller
- IDB Productions (US)
- Bookseller's Inventory #
- 9781776745616
- Title
- The Elements of Geology
- Author
- William Harmon Norton
- Format/Binding
- MP3 Audio CD
- Book Condition
- Used
- Quantity Available
- 999
Terms of Sale
IDB Productions
Due to the nature of these products, there are no refunds for our CD's
About the Seller
IDB Productions
Biblio member since 2015
Torrance, California
About IDB Productions
Listnerz.com offers classic audio books and is committed to providing each customer with the highest standard of customer service.
Glossary
Some terminology that may be used in this description includes:
- Edges
- The collective of the top, fore and bottom edges of the text block of the book, being that part of the edges of the pages of a...