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Map of Hispanic America (no. 1): Publication


Map of Hispanic America (no. 1): Publication

3.3 (1931)

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    Available in PDF Format | Map of Hispanic America (no. 1): Publication.pdf | Unknown
    American Geographical Society of York
Volume: no. 1 General Books publication date: 2009 Original publication date: 1922 Original Publisher: American Geographical Society of New York. Subjects: Latin America History / Latin America / General Travel / South America / General Notes: This is a black and white OCR reprint of the original. It has no illustrations and there may be typos or missing text. When you buy the General Books edition of this book you get free trial access to where you can select from more than a million books for free. Excerpt: CHAPTER II GEOLOGICAL STRUCTURE AND LAND FORMS The median line of the southern Andes from 18 S. to 56 S. approximates very closely to a meridian. Within the areal limits of the La Paz sheet this line swings abruptly to a northwesterly direction, and the Cordillera enters upon the great curve to the west which gives the northern Andes (from 18 S. to 10 N.) a nearly semicircular trend. The largest of the physical features in the area reflect this important change in direction. Thus in the northern half the coast line and the two chief Cordilleras have the northwest-southeast trend, and rivers in the main follow this trend or run perpendicularly to it. In the southern half of the coast line, the Western Cordillera and the western edge of the Eastern Cordillera trend almost north and south. But each of the tectonic forces which have affected the crust in this area has left its marks throughout both sections. Thus in the northern we find an important line of summits west of Titicaca which trends from north to south and continues the coastal direction south of Arica. And again the parallel line of escarpment east of Lake Poopo is continued northward through the Cordillera by a furrow of lower land, the basin of the Ayopaya River. Moreover, in the southern half the meridional direction is not coincident with the strike of the folded rocks. For the folds, in so far as the volcanic rocks allow us to see them, follow the same direction as they...  
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