Out of Stock
Overview
Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: CHAPTER V Geological Construction After we have become acquainted with the general outlines of the relief of the country, the questions present themselves, Whence come these differences between the mainland of Italy and the three large islands lying so close to it; this chain-like arrangement of the mountains, this occurrence of volcanoes in particular places, these great differences in the character of the two southern peninsulas, Calabria and Terra d' Otranto, these plains on the western side of the mountains, this striking shape in the bays of Southern Italy ? The answers to all these questions are afforded by the geology of the country, which tells us of its formation, its history, and its development in connexion with those of neighbouring regions. But in order to obtain the data necessary for a full understanding of the present shape of the land we must first deal with the general geological conditions, i.e. with the distribution and arrangement of the several geological formations, as well as with the theory of volcanoes. I. General Geological Conditions A glance at the accompanying geological map shows us at once that it is almost exclusively the younger formations of the Mesozoic and Cenozoic (tertiary) periods which have developed themselves in the Apennine peninsula. The Paheozoic and Azoic formations only occur in the Alps, in a few spots in Tuscany, in the islands and in Calabria, and this already marks a difference between these latter districts and the Apennines proper. The most recent of all, the Quaternary deposits, are limited in the mainland to the Po-valley, while volcanic rocks (lavas, tufas), though distributed over the whole region, appear in any considerable extent only along the Tyrrhenian coast. In the Western Alps the oldest portions (...
| ISBN-13 | 9780217227162 |
|---|---|
| ISBN-10 | 0217227163 |
| Weight | 1.36 Pounds |
| Dimensions | 9.00 x 6.00 x 0.94 In |
| List Price | $28.39 |
| Format | Paperback |
|---|---|
| Pages | 422 pages |
| Publisher | |
| Published On | 2009-08-01 |
View All Offers
Sort by:
Price
